HomeMy WebLinkAbout39421; COLE LIBRARY HVAC REPLACEMENT; HVAC ASSESSMENT; 2004-04-01q42I
IEORGINACOLE LIBRARY HVAC ASSESSMENT
.1250 CARLSBAD VILLAGE DRIVE
CARLSBAD, CA 92008
FOR:
MR. DALE SCHUCK
PUBLIC WORKS SUPERVISOR
•
405 OAK AVENUE •
CARLSBAD,, CA 92008
. PERFORMED BY: .
DAHL, TAYLOR & ASSOCIATES, INC.
9899 HIBERT STREET, SUITE A
SAN DIEGO, CA 92131 •
INTRODUCTION .1
BACKGROUND ................... .................................................. 1
APPROACH.................. . ......................................................... 3
ANALYSIS......................... ................................................. 3
HVAC OPTIONS ......................................................................
HVACOPTION #1 .....................................................................4
HVACOPTION #2 .................................................................... 5
HVACOPTION #3 .................................................................. 6
HVACOPTION #4 .................................................................... .6
ELECTRICAL SYSTEM .......................................................... 7
LIFE CYCLE COST ANALYSIS..................................................7
CONSTRUCTION PHASING.....................................................8
RECOMMENDATIONS ............................................................. 9
APPENDIX A - COMPUTER SIMULATION
APPENDIX B- CONCEPTUAL DRAWINGS
APPENDIX C - COST ESTIMATES
APPENDIX. D - LIFE CYCLE COST ANALYSIS
APPENDIX E - REFERENCES
I
INTRODUCTION
Dahl, Taylor & Associates, Inc., a mechanical, electrical and structural
engineering consulting firm, was awarded by the City of Carlsbad, to perform an
engineering assessment of the heating, ventilating, and air conditioning (HVAC)
system at the Georgina Cole Library, located on 1250 Carlsbad Village Drive,
Carlsbad, CA. The purpose of the study is to survey the existing HVAC system
and evaluate the available options for replacement. The assessment will include
recommendations including the evaluation of the existing hot and chilled water
system and other alternatives to the existing system. The will also include a
environmental survey for asbestos containing materials, lead based paint, and
mold in the anticipated areas of construction. The study will evaluate at least
three options and provide the life cycle cost analysis for each option to determine
the best value.
BACKGROUND
The Georgina Cole Library is a 25,000 square foot, two-story facility located at
1250 Carlsbad Village Drive, Carlsbad California. It was built in 1968 and has
undergone several structural and interior renovations since its construction.
The existing heating, ventilating and air conditioning (HVAC) system has also
been in service since 1968. The HVAC equipment has been well maintained
over the 30 plus years since its commissioning, but the system has recently
required more repairs. The age of the equipment and the corrosive ocean air
environment has deteriorated some components of the system. A major repair
was performed on the water chiller in 2003, which resulted in a compressor
replacement.
The HVAC system consists of a 60-ton cooling capacity water-cooled
reciprocating chiller and a 1.500,000 BTUH natural gas fired boiler and are
located in Mechanical Room #1. There are at total of 4 multi-zone constant
volume air handlers that serves the entire library. It does not appear from the as-
built design drawings and from the installed equipment that the system is utilizing
an energy economizer cycle, which is now required by the California State Title
24 Regulations. The existing HVAC controls and devices are pneumatically
controlled, which is served by an air compressor in the Mechanical Room #1.
Photo 1. Existing 1965 reciprocating chiller.
/ .
-..
40
IJ
aft
Photo 2. Existing cooling tower.
For planning purposes, the building may be replaced after 10 years to
accommodate the growth of information and growth of the community.
APPROACH
Dahl, Taylor & Associates (DTA) conducted several field surveys to observe,
verify, and record information on the existing HVAC system, electrical system
and structural construction of the library. The City of Carlsbad Public Works
department provided as-built drawings of the original construction and various
expansion and improvements to the building for our review. The information was
used to verify the building heating and cooling load requirements and to verify the
condition and location of the equipment. The current building and state energy
codes were reviewed to determine the deficiency of the existing system and the
requirements for the new system.
As part of this assessment; Dahl, Taylor & Associates subcontracted the services
of Ninyo and Moore, a geotechnical and environmental consultant, to perform a
hazardous building materials survey in the mechanical rooms in the library. The
objective of the hazardous materials survey was to determine if asbestos
containing materials (ACMs), lead based paint, or preliminary microbial growth
(mold) is present in the planned area of construction. Ninyo and Moore's survey
did detect the presence of ACMs and lead based paint in both mechanical
rooms. The survey also concluded that the mechanical rooms did not have any
indication of preliminary microbial growth. A copy of this report has been
provided to the Public Works Supervisor, Mr. Dale Schuck.
ANALYSIS
A computer simulation was performed using the Energy Pro Title 24 program to
estimate the cooling and heating loads of the building. The insulation factors
were estimated and were based on the existing building construction. The
Uniform Building Code and Uniform Mechanical Code for library buildings were
used for the required ventilation rate of 20 cfm per occupant. The summary of
the computer simulation is presented in Appendix A.
The estimated cooling load of the building is approximately 854,000 Btuh (71
tons) and the estimated heating load is 1,000,000 Btuh.
An estimate for each option was developed using the Means Construction Cost
Data and it includes material, installation and overhead and profit. It is does not
include design cost. A budgetary cost estimate is provided in Appendix B.
HVAC OPTIONS
Dahl, Taylor and Associates reviewed four options for the HVAC replacement in
the library. It is important to note that there may be numerous options that can
be evaluated for this project. The following options are being considered and are
appropriate for the size and scope of the project.
HVAC Option 1: Replace the existing equipment with similar or like
equipment. The new system will be designed to meet the
latest building codes and standards, as well as, with the•
current state energy codes. A new 70-ton reciprocating
chiller will be reinstalled in Mechanical Room #1. The boiler
will be installed outdoors to meet current building codes
along with the cooling tower. All four-air handlers and the
chilled and hot water pumps will have variable speed drives
for better control and energy efficiency. Variable air volume
boxes will be installed and the pneumatic controls will be
replaced with a digital control system.
HVAC Option 2: Same as Option 1, except the new 70-ton chiller will be
evaporative cooled. The chiller will be installed outdoors with
the boiler and evaporative condenser. This option still
requires a cooling tower system. However both the chiller
and cooling tower are more efficient than Option 1.
HVAC Option 3: Same as Option 1, except the 70-ton chiller will be air-
cooled. The chiller, boiler, and pumps will all be installed
outdoors. This design will not require a cooling tower. A roof
covering maybe required for the chiller.
HVAC Option 4: Option 4 will use commercial air-cooled split system HVAC
units. This option eliminates the requirements of the large
chiller, chilled water pumps, cooling tower and cooling tower
pumps. There will be four air-cooled condensing units that
will need to be installed either on the roof or on the ground.
Variable air volume boxes and controls will be installed with
the digital control system.
HVAC OPTION #1
Option 1 will replace the existing equipment with new energy efficient equipment.
The new equipment will be base on the same design of the existing system. The
new HVAC system will still use a chiller, boiler, cooling tower and water pumps.
New air handlers will have variable speed controls for energy efficiency and
improved temperature control. The new air handlers will utilize a economizer
4
cycle to meet state energy efficiency standards and standards for ventilation for
indoor air quality. The boiler and boiler water pumps will be install outdoors next
to the cooling tower. See drawings for Option 1 in Appendix B.
A) Advantages:
Meets state energy efficiency standards
Meets national ventilation standards - I . Twin-screw refrigerant compressor require no routine service or
maintenance
Smaller chiller requires less space I . Improved temperature control
I B) Disadvantages:
The HVAC system still utilizes a cooling tower system
Chiller and chiller pumps are still in the mechanical room I .
Demolition and installation of new equipment requires closure of the
library during construction
I ...
HVAC OPTION #2
Option 2 is similar to Option 1. The new chiller will be installed outdoors next to
I the evaporative condenser and hot water boiler. The refrigerant condenser uses
an evaporative cooling tower. The evaporative condenser is slightly more
efficient than an air-cooled condenser and requires .a little less maintenance than
the open cooling tower in Option 1. See drawings for Option 2 in Appendix B.
A) Advantages:
I Meets state energy efficiency standards
I • Meets national ventilation standards
. Twin-screw refrigerant compressor require no routine service or
- maintenance and has a longer operational life
Require less maintenance than Option 1 (less water and chemicals) I .
Smaller chiller requires less space
Noise in Mechanical Room #1 significantly reduced
I . Improved temperature control
B) Disadvantages:
The HVAC system still utilizes a cooling tower system
ii
Chiller and chiller pumps are still in the mechanical room
Demolition and installation of new equipment requires closure of the
library during construction
•
HVAC OPTION #3
The Option 3 design will use an air-cooled chiller in lieu of the water-cooled
chiller (Option 1) or the evaporative cooled chiller (Option 2). The air-cooled
chiller will be installed 'outdoors, along 'with the boiler and chilled and hot water
pumps. See drawings for Option 3 in Appendix B.
A) Advantages:
Meets state energy effibiency standards
Meets national ventilation standards.
No water cooling tower required'for the new chiller
All the of equipment will be installed outdoors, except for the air handlers
Requires less maintenance than Option 1 or '2
Noise in Mechanical Room #1 significantly reduced
Improved maintenance access to all equipment '
B) Disadvantages:
Demolition and installation of new equipment requires closure of the
library during construction
Slightly higher energy cost than Option 1 and 2
•
HVAC OPTION #4
The Option 4 design will use the split system air-cooled technology. The split
system does not require chilled water or water pumps. This option would also
eliminate the cooling tower and water pumps as in Option 3. A boiler and hot
water pump is still required for the heating load.
A) Advantages:
-
Meets state energy efficiency standards
Meets national ventilation standards.
No water cooling tower required for the new chiller '
All the of equipment will be installed outdoors, except for the air handlers
Requires less maintenance than Option 1, 2 and 3
Noise in Mechanical Room #1 significantly reduced
Improved maintenance access to all equipment
B) Disadvantages:
Air-cooled condenser packages will require more space either or the
ground or on the roof
The locations of the air-cooled condensers may be unsightly
Air-cooled condenser package have higher sound levels than Option 1
and
The cost of structural and electrical modifications may be more than all the
other options
Demolition and installation of new equipment requires closure of the
library during construction
Slightly higher energy cost than Options 1, 2 and 3
ELECTRICAL SYSTEM
The existing electrical service is 120/208V, 3 phase, 4-wire rated at 1000 amps.
The existing 1 000A main switchboard appears to be in excellent condition.
Existing mechanical equipment in Mechanical room #1 is fed via wall mounted
electrical equipment. Two air handlers are fed from separate disconnects and
starter units. The chiller is fed from a400A fused disconnect. The chilled water
and hot water pumps are also fed from separate disconnects and starter units.
Two air handlers in Mechanical Room #2 are fed in like manner. The cooling
tower and associated pumps located at the exterior building are fed from rack-
mounted equipment via underground conduit.
Existing disconnects and starters for air handlers and the cooling system pumps
will be replaced with Variable Frequency Drives (VFDs). The VFDs will be
supplied with integral disconnect switches. The existing 400A, fused disconnect
switch for the chiller is in excellent condition and may be reused for Option 1 and
2 where the chiller remains indoor.
I replaced
The existing electrical equipment at the exterior mechanical yard will need to be
to feed new equipment. Currently, the enclosures for the disconnects
and starters are in fair to poor shape showing signs of moderate corrosion.
I
Conduit feeding the mechanical yard is also showing signs of corrosion. For
Options 1, 2, and 3 a new underground ductbank will be required from the
electrical room to the Mechanical Yard. For Option 4, a new Mechanical
panelboard will be provided in Mechanical room #1 to feed new condenser units
I located on the roof or on grade.
I
I
LIFE CYCLE COST ANALYSIS
A life cycle cost (LCC) analysis was used to evaluate the options from a net
present value basis. A spreadsheet available from the Washington State
Department of General Administration was used to calculate the life cycle cost of
each option. The current federal discount rate of 4.6% and inflation rate of 3.5%
was used in the analysis. A ten-year life cycle was used since the City of
Carlsbad may replace the library in ten years. The assumptions and analysis are
provided in Appendix D.
The results of the life cycle cost analysis are provided in the proceeding table.
Option First
Cost
Maintenance
Cost
Nat. Gas
Cost
Electrical
Cost
Present Worth of
Cumulative Cost
1 $555,874 $77,094 $51,731 $157,145 $780,525
2 $590,077 $66,815 $51,731 $188,574 $831,332
3 1 $557,794 $46,256 $51,731 $187,265 $781,863
4 $464,135 1 $46,256 J$51,731 J$178,098 J$681,005
The results indicate that Option 4 has the lowest life cycle cost over the ten-year
period. Followed by Option 3 and 1. However, from and design and engineering
perspective, Option 2 has design and efficiency advantages over all of the other
options. It provides a higher temperature differential between the process
temperature and the wet bulb temperature. Simply put, better energy efficiency.
The fan and equipment horsepower ratings for Option 2 are also typically lower
than the other options. The evaporative condenser requires less maintenance
than the open loop cooling tower and can be cleaned and serviced without
shutting down the unit. The equipment location and space requirement for
Option 2 can be accommodated in the existing cooling tower enclosure.
CONSTRUCTION PHASING
The installation of each proposed option will require major construction activities.
The removal and abatement of the hazardous materials will require initial and
post air monitoring. The abatement will require isolation and containment from
the adjacent areas. The removal of the existing equipment in both mechanical
rooms will require demolition of the ceilings in the entrances west and east
entrances. The mechanical rooms do not have access door to remove the large
pieces of equipment. During the construction phase, the HVAC system will not
be available.
The construction cost estimate was based on performing the work while the
building is unoccupied. It is highly recommended that the library will be closed
during the construction, to keep the construction cost at normal labor rates and to
eliminate safety concerns or coordination with the general public.
RECOMMENDATIONS
We have presented four different options for replacement of the existing heating,
ventilation air conditioning (HVAC) system at the Georgina Cole Library. Each
option has its advantages and disadvantages in terms of construction cost,
system flexibility, energy efficiency and life cycle cost. The City of Carlsbad
Public Works Department will need to evaluate their short term. and long term
objectives for the building when upgrading or replacing the iñf rastructure
systems. . . .
.
Dahl, Taylor & Associates recommends HVAC Option 2 as the best all around
value for the replacement. Option 2 will provide much improved air temperature
control, proper.air distribution, energy efficiency, and flexibility in configuration.
An upgrade to any of the four options would improvethe overall indoor air
temperatures and quality, reduce the energy consumption, and meet the current
building and state energy codes over the existing heating, ventilation, and air
conditioning system. . .
TITLE 24REPORT V V
Title 24 Report for
HVAC Study for Georgina Cole, Library V V V
1250 Carlsbad Village Drive
V
V
Carlsbad, CA 92008 V
V
Project Designer: V V V V V
V Rolando Geniza V
V 9899 Hubert St., Suite A V
V San Diego, CA 92131
V 858-530-2268 V V
V Report Prepared By: V V
David T. Phu . V
DAHL, TAYLOR & ASSOCIATES, INC.
V V 2960 DAIMLER ST. V
V V SANTA ANA, CA 92705 V
V (949) 756-8654
Job Number: V
3.04.001 V
•
Date: •V
V
• V 4/1/2004
The EnergyPro computer program has been used to perform the calculations summarized in this compliance report. This program has approval and is
authorized by the California Energy Commission for use with both the Residential and Nonresidential 2001 Building Energy Efficiency Standards.
This program developed by EnergySoft, LLC (415) 883-5900.
EnergyPro 3.1 By EnergySoft
• Job Number: 304.001 User Number: 3175
TABLE OF CONTENTS -
Cover Page 1
Table of Contents . . . 2.
Form MECH-4 Mechanical Sizing and Fan Power 3
HVAC System Heating and Cooling Loads Summary 0
. 4
Room HeatihgPeak Loads
.
. . .
0 5
Room 'Cooling Peak Loads •0 •.
0
. 6
Room Cooling Coil Loads . . 0 . 7
EnergyPro 3.1 By EnergySoft Job Number: 3.04.001 User Number: 3175
___
___
___
__
•0
0
0
_
L1
NUMBER
OF FANS
1.0
1.0
CFM
(SupplyFans)
37,000
TOTALS 17,272 I_37,0001
TOTAL FAN SYSTEM
POWER DEMAND 0.4671
WATFSICFM Col. F/CoI.G
MECHANICAL SIZING AND FAN POWER MECH-4
PROJECT NAME DATE
HVAC Study for Georgina Cole Library 4/1/2004
SYSTEM NAME
HVAC System FLOOR AREA
16,000
NOTE: Provide one copy of this form for each mechanical system when using the Prescriptive Approach. I
ISIZING AND EQUIPMENT SELECTION
1. DESIGN CONDITIONS: .
- OUTDOOR DRY BULB TEMPERATURE (APPENDIX C)
- OUTDOOR WET BULB TEMPERATURE (APPENDIX C)
-. INDOOR,. DRY BULB TEMPERATURE SEE ASHRAE CHAPTER 8, 1993 OR APPENDIX B .
COOLING HEATING
OF 34 OF
OF
O 7r'O F I U
83
68
7Q U
2. SIZING:
- DESIGNOUTDOOR'AIR '6,1 CFM(MECH3; COLUMN I)
- ROOM LOADS
'
- RETURN VENTED LIGHTING
.
- RETURN AIR DUCTS
-. RETURN FAN
.
- SUPPLY FAN
- SUPPLY DUCTS
TOTALS
SAFETY/WARM-UP FACTOR
MAXIMUM ADJUSTED LOAD (TOTALS FROM ABOVE x SAFETY I WARM-UP FACTOR)
29.711 245,312
360,480
n/a
18,024
0
. -57,689
' 18,024
584,151
835,336
554,155
0
27,708
0
57,689
27,7081
L96,971
843,335
3. SELECTION:
INSTALLED EQUIPMENT CAPACITY (ADJUSTED FOR DESIGN CONDITIONS)
IF INSTALLED CAPACITY EXCEEDS MAXIMUM
ADJUSTED LOAD, EXPLAIN
720,000 ii000000
Btu/ Hr , Btu/Hr
EFFICIENCY
MOTOR DRIVE
91.0% 97.0%
77.0% 97.0%
NOTE: Include only fan systems exceeding 25 HP (see Section 144).
Total Fan System Power Demand may not exceed 0.8 Watts/cfm for
constant volume systems or 1.25 Wattslcfm for VAV systems.
I EnergyPro 3.1 By EnergySoft User Number 3175 Job Number: 3.04.001 Page:3 of 7 I
FAN DESCRIPTION
Supply Fan
Exhaust Fan
'II1
DESIGN
BRAKE HP
20.000
0.370
COIL COOLING PEAK COIL HTG. PEAK
CFM Sensiblel Latent CFM I Sensible
I 22,345 554,155 85,40211 9,552 360,480
0
27,708 18,024
0 0
I 6,400 29,71 71,15611 6,400 245,312
57,689 -57,689
27,708 18,024
696,97 156,5581 I 584,1511
Total Room Loads
Return Vented Lighting
Return Air Ducts
Return Fan
Ventilation
Supply Fan
Supply Air Ducts
TOTAL SYSTEM LOAD
IHVAC SYSTEM HEATING AND COOLING LOADS SUMMARY
PROJECT NAME DATE
HVAC Study for Georgina Cole Library S 4/1/2004
SYSTEM NAME
. FLOOR AREA
HVAC System i r. nnn
Number of Systems
Heating System
Output per System 1,000,000
Total Output (Btuh) 1,000,000
Output (Btuh/sqft) 62.5
Cooling System
Output per System 800,000
Total Output (Btuh) 800,000
Total Output (Tons) 66.7
Total Output (Btuh/sqft) 50.0
Total Output (sqftlTon) 240.0
Air System
CFM per System 37,000
Airflow (cfm) 37,000
Airflow (cfmlsqft) 2.31
Airflow (cfm/Ton) 555.0
Outside Air (%) 17.3
Outside Air (cfmlsqft) 0.40
Note: values above given at ARI conditions
Central Air Handling Units 720,000 80,000 1,000,000
Total Adjusted System Output ,0-r—)0]I i,000,000 (Adjusted for Peak Design Conditions) I 720,0001 80 ____
TIME OF SYSTEM PEAK Aug 3pm1 Jan 12 ami
63.4°F
am Temperatures at Time of
105.0°F
Heating Coil
ATING S
34.0 °F
>
Outside Air
6400 cfm
69.5 OF
1~
Supply Fan
37000 cfm
106.4°F ____________________
> .L Supply Air Ducts
106.0°F
ROOMS
70.0°F
Return Air Ducts '
Cooling Coil
OOLING SYSTEM
83.0 / 67.8°F
) ,-
Outside Air
6400 cfm
78.7/63.1°F
EnerqyPro 3.1 B
CS (Airstream I
79.4 / 63.9°F
-S
User Number: 3175
ratures at Time of Cooling Peak)
55.0 / 53.6 °F 56.4 I 54.2 °F______________________
(? >Supply Air Ducts -,
Supply Fan 57.1 / 54.4 OF
37000 cfm 42.9% R.H. I ROOMS I
78.0/62.9°F
h Return Air Ducts M
Job Number: 3.04.001 4 of 7
I
I ROOM HEATING PEAK LOADS.
Project Title . Date
HVAC Study for Georgina Cole Library . 14/1/2004
Room Information . Design Conditions
Room Name Library Floor Time of Peak . . Jan 12 am
Floor Area 16,000 Outdoor Dry Bulb Temperature 34 °F
Indoor Dry Bulb Temperature 70°F
Conduction Area U-Value AT OF Btu/'hr
6880.0 x
x
X
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
. 0.1891 x
x
X
x
x
.x
36.0
x
x
x
x
x
x
x•
x
x
x
x
x
x
x
x
x
x
x
=
=
=
=
=
46,829
2,660.0 0.8100 36.0 77,566
16,000.0 0.0505 36.0 29,060
x
x
x
x
x
x
.
x
x _______
x
x
x
x
x ______
x ______
x _______
x
x
x
x
Items shown with an asterisk () denote conduction through an interior surface to another room. Page Total: L 153.4551
Infiltration: rb1.00 x I 1.078] X I 16.0001 X I 20.001 X I i.00l I 60] x 361 = I 207.0251
I 'Schedule Air Sensible Area Ceiling Height ACH Fraction
I TOTAL HOURLY HEAT LOSS FOR ROOM 360,480 I
I . . I EnergyPro 3.1 By EnergySoft User Number 3175 Job Number: 3.04.001 Page: 5 of 7 I
I .
ROOM COOLING PEAK LOADS
Project Title Date HVAC Study for Georgina Cole Library 4/1/2004
ROOM INFORMATION DESIGN CONDITIONS
Room Name Library Floor Time of Peak Aug 3pm
Floor Area 16,000 Outdoor Dry Bulb Temperature 83 OF
Indoor Dry Bulb Temperature 78°F Outdoor Wet Bulb Temperature 68 OF
Conduction Area
-11 Metal Stud Wall
-24 NR Wndw
-11 Metal Stud Wall
-24 NR Wndw
-11 Metal Stud Wall
-24 NR Wndw
-11 Metal Stud Wall
.-19 Built Up Roof
1. Design Equivalent Temperature Difference (DETD)
Items shown with an asterisk () denote conduction through an interior surface to another room.
X
X
X
X
X
x
X
X
x
DETD
=
=
=
=
=
=
=
=
9.0
2.6
10.5
2.6
26.9
2.6
17.1
33.2
Page Total
U-Value
0.1891
0.8100
0.1891
0.8100
0.1891
0.8100
0.1891
0.0505
Btu/hr
4,141
1,232
756
2.612
9,656
1.80E
6,974
26.79
53.9711
Solar Gain Orientation Area
X
x
x
x
x
x
x
x
x
x
SGF
X
x
x
x
x
x
x
x
x
x
'SC
x
x
x
x
Weighting
Factor
=
=
=
=
(Northeast) 580.0 38 0.679 1.253
(Southeast) 1060.0 38 0,679 1.995
(Southwest) 850.0 224 0.679 0.433
(Northwest) 170.0 113 0.679 0.423
x
x
x ___ ___
x ___ ___
x
x
Page Total
Btu/hr
18.75(
54.567
56,010
5,518
134,8451
Sched. Weighting Internal Gain Frac. Area Heat Gain Factor Btu/hr
Jghts 1.0c x 16,000 x 1.200 Watts/sqft x 3.41 BtuhlWatt x 0.999 = 65,458
Dccupants 1.0 X 16,000 X 250 Btuh/occ. I 5 sqft/occ. X 1.00 = 80,000
Receptacle 1.0 x 16,000 X 1.500 Watts/sqft x 3.41 Btuh/Watt x 1.00 = 81,912
ocess L 1.0 x 16,000 x 2.000 Wattslsqft x 3.41 Btuh/Watt x 1.00 = 109,216
Infiltration: 1.00] xl 1.0781 x L 160001 x I i] x I /601 X I 51 = I 28,7531 chedule Air Sensible Area Ceiling Height ACH Fraction
[TOTAL HOURLY SENSIBLE HEAT GAIN FOR ROOM 554,155 1
Sched.
Latent Gain Frac. Area Heat Gain Btu/hr
ccupants I 1.00 x 16.000 x 2001 Btuh/occ. I 50 sqftlocc. = 64.000
Receptacle I 1 00 x moon x 0.000 Watts/sqft X 3.413 Btuh/Watt = .
Process 1.00 x 16,000 x 0.000 Watts/sqft x 3.413 Btuh/Watt = 0
Infiltration: inol xl 48341 x I X I 20001 X I I6OJ xl 0000R31 = I 21401 chedule Air Latent Area Ceiling Height ACH zslw
I
I
ROOM COOLING COIL LOADS
Project Title Date HVAC Study for Georgina Cole Library 4/1/2004
ROOM INFORMATION DESIGN CONDITIONS
Room Name Library Floor Time of Peak Aug 3pm
Floor Area 16,000 Outdoor Dry Bulb Temperature 83 OF
Indoor Dry Bulb Temperature 78°F Outdoor Wet Bulb Temperature 68
U-Value Conduction Area
-11 Metal Stud Wall
-24 NR Wndw
-11 Metal Stud Wall
-24 NR Wndw
-l1 Metal Stud Wall
-24 NR Wndw
-11 Metal Stud Wall
-19 Built Up Roof
1. Design Equivalent Temperature Difference (DETD)
Items shown with an asterisk () denote conduction through an interior surface to another room.
X
X
X
X
x
x
X
X
x
DETD
=
=
=
=
=
=
=
9.0
2.6
10.5
2.6
26.9
2.6
17.1
33.2
Page Total
Btu/hr
4,141
1,232
756
2,612
9,656
1.80
6,974
26.79
53.971
Orientation Area
X
X
X
x
x
x
x
x
x
x
SGF
X
X
X
x
x
x
x
x
x
x
Sc
X
x
X
x
Weighting
Factor
=
=
=
(Northeast) 580.0 31 0,679 1.253
(Southeast) 1060.0 38 0.679 1.995
(Southwest) 850.0 224 0.679 0.433
(Northwest) 170.0 11 0.679 0.423
x
x
- x ___
x ___
x ___
x
Page Total
Solar Gain
Window
Window
Window
Window
Btu/hr
18.751
54.56
56,010
5,518
134,
Sched. Weighting Internal Gain Frac. Area Heat Gain Factor Btu/hr
ights 1.0c x 16,000 x 1.200 Wattslsqft x 3.41 Btuh/Watt x 0.999 = 65,458
ccupants 1.0c X 16,000 X 250 Btuhlocc. I 5 sqft/occ. x 1.00 = 80,000 Receptacle 1.0c x 16,000 x 1.500 Watts/sqft x 3.41 Btuh/Watt x 1.00 = 81,912
rocess 1.0 x 16,000 x 2.000 Wattslsqft x 3.41 Btuh/Watt x 1.00 = 109,216
Infiltration: Ii 1.001 xl 1.0781 X L 16,0001 x 20.001 x I 1.001 /601 x 51 = 28,7531 Schedule Air Sensible Area Ceiling Height ACH AT Fraction
TOTAL HOURLY SENSIBLE HEAT GAIN FOR ROOM 554,155 1
Sched.
Latent Gain Frac. Area Heat Gain Btu/hr
Occupants 1 X 16.000 X .2001 Btuh/occ. I 50 sqftlocc. =
Receptacle I ion x mono x 0.000 Watts/sqft x 3413 Btuh/Watt
Process J 1.00 X 16,000 x 0.000 Wattslsqft x 1 3.413 BtuhlWatt = 0
Infiltration: i 1 X4 )1 x I X 20 x I i no1 I 601 x I = I 71 402 I chedule Air Lafent Area Ceiling Height ACH Fraction AW
ITOTAL HOURLY LATENT HEAT GAIN FOR ROOM 85.4021
L EnergyPro 3.1 By EnergySoft User Number: 3175 3.04.001 Page:7 of 7
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I. COST ESTIMATE ASSUMPTIONS S
The cost estimate was developed using the Means Construction Cost Data and I past project experience and it includes material, installation and overhead and
profit. It is does not include design cost
I S HVAC OPTION #1
I HVAC OPTION #2
HVAC OPTION #3
I HVAC OPTION #4
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OPINION OF PROBABLE CONSTRUCTION COST ESTIMATE
DAHL, TAYLOR & ASSOCIATES bATE: May 5, 2004 SHEET 1 OF 2
PRELIMINARY DESIGN
PROJECT NAME: Georgina Cole Library (Option 1)
HVAC Study - Replacing Like-for-Like (chiller remains inside & Boiler relocated outdoor)
DESIGN DEVELOPMENT
CONSTRUCTION DOCS
ENGINEER DP/AD CHECKED RG j. QUANTITY MATERIAL LABOR
DESCRIPTION: . NO. OF UNIT PER
UNIT
TOTAL PER TOTAL TOTAL
UNITS UNIT
DEMOLITION WORK:
Misc. Electrical demo / relocation work 1 LS $500.00 $500.00 $4,000.00 $4,000.00 $4500.00
Demo existing AHUs & associated piping/accessories 4 LS $0.00 $0.00 $2,500.00 $10,000.00 $10,000.00
Demo exising Chiller & associated piping/accessories 1 LS $0.00 $0.001 $2,000.00 $2,000.00 $2,000.00
Demo existing Cooling Tower & associated piping 1 LS $0.00 $0.001 $1,502.00 $1502.00 $1,502.00
Demo existing Boiler & associated piping/accessories 1 LS $0.00 $0.001 $1,000.00 $1,000.00 $1,000.00
Demo existing wall partition for equipmt demo & installation 816 SF $0.00 $0.00 $5.00 $4,080.00 $4,080.00
Entrance doors removal and installation 1 LS $0.00
LS
$0.00 $1,600.00 $1,600.00 $1,600.00
Removal of asbestos insulation and lead paint 1 $15,000.00 $15,000.00 $15,000.00
NEW WORK:
MECHANICAL
Cooling tower, stainless, sti bolts, draw thru, 75 tons i EA $15,000.00 $15,000.00 $786.00 $786.00 $15,786.00
Pipe, welded black steel on yoke & roll hgrs, 10' o.c., 4" dia 40 LF $8.65 $346.00 $22.99 $919.60 $1,265.60
Tubing, copper, coupling & hanger 10' o.c. 1-1/2 dia 20 LF $3.37 $67.40 $8.00 $160.00 $227.4
Elbow, 90, copper, cu x cu, 1-1/2 dia 3 EA $2.90 $8.701 $32.00 $96.00 $104.7
Elbow, 90, weld joint, 4" pipe size _6_ EA $18.65 $111.90 $172.00 $1032.00 $1,143.9
Flange, welding neck 150 lb, 4" pipe size _6_ EA $27.00 $162.00 $86.05 $516.30 $678.3
Valve, bronze, gate, NRS, soldered, 125 psi, 1-1/2" size 1 EA $49.50 $49.50 $32.00 $32.00 $81.5
Valve, iron body, butterfly, lug type, lever actuator, 4" size _2 - EA $112.00 $224.00 $150.00 $300.00 $524.0 Cooling tower chemical feeder 1 EA $263.00 $263.00 $167.00 $167.00 _$430.00 Cooling tower condenser control system 1 EA $4,000.00 $4,000.001 $1,750.00 $1,750.00 $5,750.00 Cooling tower balancing i EA $0.00 $274.00 $274.00 $274.00
Chiller, water cooled, 60 tons 1 EA $40,800.00 $40,800.00 $6,325.00 $6,325.00 $47,125.00
Pipe, welded black steel on yoke & roll hgrs, 10' o.c., 4" dia 40 LF $8.65 $346.00 $22.99 $919.60 $1,265.6
Elbow, 90 welded joint, butt, 4" size 8 EA $18.65 $149.20 $172.00 $1,376.00 $1,525.2 Flange, welding neck, 150 lb, 4" pipe size 16 EA $27.00 $432.001 $86.05 $1,376.80 $1,808.8 Valve, iron body, butterfly, lug type, level actuator, 4" size 4 EA $112.00 $448.001 $150.00 $600.00 $1,048.00
Expansion joints, bellows type, flange spool, 4" dia 4 EA $227.00 $908.00 $90.50 $362.00 $1,270.00
Thermometers, stem type, 9" case, 8' stem, 3/4" NPT 4 EA $130.00 $520.00 $15.05 $60.20 $580.20
Gauges, pressure or vacuum, 3-1/2" diameter dial 4 LF $22.50 $90.00 $13.15 $52.60 $142.60 1-1/2' wall 4'dia. CHW piping insulation (silicate w/cover) 20 EA $410.00 $8,200.00 $3.70 $74.00 $8,274.00 Chiller balancing i EA $0.00 $0.00 $360.00 $360.00 $360.00
Air Handling Unit, 6,500 cfm central air handling unit i EA $13,000.001 $13,000.00 $7,300.00 $7,300.00 $20,300.00 Air Handling Unit, 9,500 cfm central air handling unit 2 EA $16,300.00 $32,600.00 $7,900.00 $15,800.00 $48,400.00
Air Handling Unit, 11,500 cfm central air handling unit i EA $18,100.00 $18,100.00 $10,900.00 $10,900.00 $29,000.00
Boiler, gas, hot water, 1,500,000 Btuh 1 EA $13,100.00 $13,100.00 $12,800.00 $12,800.00 $25,900.00
HW Pump, base w/ motor, end-suction to 100 gpm 1 EA $4,475.00 $4,475.00 $2,475.00 $2,475.00 $6,950.00 CHIN Pump, base w/ motor, end-suction to 160 gpm 1 EA $4,475.00 $4,475.00 $2,475.00 $2,475.00 $6,950.00 CW Pump, base w/ motor, end-suction to 190 gpm 1 EA $5,000.00 $5,000.00 $2,825.00 $2,825.00 $7,825.00
Expansion Tank, steel ASME rubber diaphragm i EA $2,000.00 $2,000.00 $83.50 $83.50 $2,083.50 Air Seperator, 1 EA $1,425.00 $1,425.00 $209.00 $209.00 $1,634.00 Chiller plant controls 1 EA $7,000.00 $7,000.00 $3,000.00 $3,000.00 $10,000.00 VFD drives, NEMA 1 5 EA $2,375.00 $11,875.00 $380.00 $1,900.00 $13,775.00 VFD drives, NEMA 4X 1 EA $2,775.00 $2,775.00 $380.00 $380.00 $3,155.00
1-1/2" Ball Valve, bronze, threaded, 125 psi 8 EA $74.00 $592.00 $17.70 $141.60 $733.60 2" Ball Valve, bronze, threaded, 125 psi 2 EA $75.00 $150.00 $18.70 $37.40 $187.40
2" Butterfly Valves, wafer type, lever actuator, 2001b 8 EA $76.00 $608.00 $19.70 $157.60 $765.60
3' Butterfly Valves, wafer type, lever actuator, 2001b 2 EA $83.50 $167.00 $62.00 $124.00 $291.00 4" Butterfly Valves, wafer type, lever actuator, 2001b 2 EA $102.00 $204.00 $99.00 $198.00 $402.00
Retrofit existing ductwork 500 LF $1.00 $500.00 $4.10 $2,050.00 $2,550.00
Retrofit existing controls i LABOR $0.00 $0.00 $10,000.00 $10,000.00 $1 0,000.00
VAV Box, w/t'stat, cool & NW coils, damper, actuator 14 LABOR $745.00 $10,430.00 $127.00 $1,778.00 $12,208.00
Piping with yoke&roll hangers 10' o.c.
Tubing, copper, coupling & hanger 10' o.c. 1' dia 280 LF $2.40 $672.00 $4.18 $1,170.40 $1,842.40
Tubing, copper, coupling & hanger 10' o.c. 1-1/2' dia 120 LF $3.53 $423.601 $5.50 $660.00 $1,083.60
Tubing, copper, coupling & hanger 10' o.c. 2" dia 250 LF $5.25 $1,312.501 $6.90 $1,725.00 $3,037.50
Tubing, copper, coupling & hanger 10' o.c. 3' dia 360 LF $10.30 $3,708.00 $9.20 $3512.00 $7,020.00
Welded, Sch. 40, black, 2'dia CHW piping supply & return 120 LF $3.88 $465.60 $8.15 $978.00 $1,443.60
Welded, Sch. 40, black, 3"dia CHW piping supply & return 250 LF $5.45 $1,362.50 $11.55 $2,887.50 $4,250.00
Welded, Sch. 40, black, 4"dia CHW piping supply & return 60 LF $7.90 $474.00 $13.40 $804.00 $1,278.00
Welded, Sch. 40, black, 4"dia CW piping supply & return 360 LF $7.90 $2,844.00 $13.40 $4,824.00 $7,668.00
Piping Insulation
1-1/2" wall 1"dia. HW piping insulation (silicate w/cover) 280 LF $2.49 $697.20 $3.09 $865.20 $1,562.40 1-1/2 wall 1-1/2'dia. HW piping insulation (silicate w/cover) 120 LF $2.35 $282.00 $3.19 $382.80 $664.80
1-1/2' wall 2'dia. HW piping insulation (silicate w/cover) 250 LF $3.07 $767.50 $3.31 $827.50 $1,595.00
1-1/2" wall 3"dia. NW piping insulation (silicate w/cover) 360 LF $3.51 $1,263.60 $3.43 $1,234.80 $2,498.40
1-1/2" wall 2dia. CHW piping insulation (silicate w/cover) 120 LF $3.07 $368.40 $3.31 $397.20 $765.60
1-1/2" wall 3'dia. CHW piping insulation (silicate w/cover) 250 LF $3.511 $877.50 $3.43 $857.50 $1,735.00 1-1/2' wall 4"dia. CHW piping insulation (silicate w/cover) 60 LF $4.10 $246.00 $3.70 $222.00 $468.00
Air Balance 1 LS $0.00 $0.00 $10,000.00 $10,000.00 $10,000.00 Supervision 10 WK $0.00 $0.00 $2,500.00 $25,000.00 $25,000.00
ELECTRICAL
Nerna 4X 30N1 P disconnect switch i EA $200.00 $200.00 $80.00 $80.00 $280.00
Nerna 4X 30A/3P fused disconnect switch 2 EA $250.00 $500.00 $100.00 $200.00 $700.00 Nerna 4X SZ 1 two-speed starter i EA $2,000.00 $2,000.00 $200.00 $200.00 $2,200.00 RGS Conduit and feeders 60 LF $2.40 $144.00 $4.00 $240.00 $384.00 EMT Conduit and conductors ioo LF $1.10 $110.00 $2.30 $230.00 $340.00 Electrical connections to VFDs 6 EA $0.00 $0.00 $150.00 $900.00 $900.00 Ductbank to Mechanical Yard so LF $0.00 $0.00 $20.00 $1,200.00 $1,200.00
STRUCTURAL
Air Handling Unit support 300 SF $15.00 $4,500.00 $10.00 $3,000.00 $7,500.00 Cooling Tower Steel Support 2160 LF $1.50 $3,240.00 $1.001 $2,160.001 $5,400.00 Retrofit wall partition including finishing 816 SF $10.00 $8,160.00 $5.00 $4080.00 $12,240.00
SUB-TOTAL $235,720.10 $199,793.10 $435,513.20
10% CONTINGENCY $23,572.01 $19,979.31 $43,551.32
SUB-TOTAL $259,292.11 ________ $219,772.41 $479,064.52
8% TAXES $20,743.37
SUB-TOTAL $499,807.89
18% OH & PROFIT $89,965.42
Estimated SDGE Rebates $33,900.00
TOTAL ESTIMATED COST $555,873.31
OPINION OF PROBABLE CONSTRUCTION COST ESTIMATE
DAHL, TAYLOR & ASSOCIATES IDATE: May 5, 2004 SHEET 1 OF 2
PRELIMINARY DESIGN
PROJECT NAME: Georgina Cole Library (Option 2)
HVAC Study - Replacing with Evaporative Condenser (chiller & boiler relocated outdoor)
DESIGN DEVELOPMENT
CONSTRUCTION DOCS
ENGINEER: DP/AD CHECKED: RG ';QUANTITY ! MATERlALj4 'LABOR
DESCRIPTION: NO. OF UNIT PER
UNIT
TOTAL PER TOTAL TOTAL
UNITS UNIT
DEMOLITION WORK:
Misc. Electrical demo / relocation work 1 LS $500.00 $500.00 $4,000.00 $4,000.00 $4,500.00
Demo existing AHUs & associated piping/accessories 4 LS $0.00 $0.00 $2,500.00 $10,000.00 $10,000.00
Demo exising Chiller & associated piping/accessories i LS $0.00 $0.00 $2,000.00 $2,000.00 $2,000.00 Demo existing Cooling Tower & associated piping 1 LS $0.00 $0.00 $1502.00 $1,502.00 $1,502.00
Demo existing Boiler & associated piping/accessories 1 LS $0.00 $0.00 S1,000.00 $1,000.00 $1,000.00
Demo existing wall partition for equipmt demo & installation 816 SF $0.00 $0.001 $5.00 $4,080.00 $4,080.00
Entrance doors removal and installation i LS $0.00
LS
$0.00 $1600.00 $1,600.00 $1,600.00
Removal of asbestos insulation and lead paint 1 $15,000.00 $15,000.00 $15,000.00
NEW WORK:
MECHANICAL
Evaporative Cooled Condenser, 85 tons, coated coils i EA $45,000.00 $45,000.00 $2,225.00 $2,225.00 $47,225.00
Pipe, welded black steel on yoke & roll hgrs, 10' o.c., 4" dia 40 LF $8.65 $346.00 $22.99 $919.60 $1,265.60
Tubing, copper, coupling & hanger 10' o.c. 1-1/2" dia 20 LF $3.37 $67.40 $8.00 $160.00 $227.40 Elbow, 90, copper, cu x Cu, 1-1/2" dia 3 EA $2.90 $8.70 $32.00 $96.00 $104.70 Elbow, 90, weld joint, 4" pipe size 6 EA $18.65 $111.90 $172.00 $1,032.00 $1,143.90 Flange, welding neck 150 lb, 4" pipe size 6 EA $27.90 . $162.00 $86.05 $516.30 $678.30
Valve, bronze, gate, NRS, soldered, 125 psi, 1-1/2" size 1 EA $49.50 $49.50 $32.00 $32.00 $81.50
Valve, iron body, butterfly, lug type, lever actuator, 4" size _2 - EA $112.00 $224.00 $150.00 $300.00 $524.00 Evap condenser chemical feeder i - EA $263.00 $263.00 $167.00 $167.00 $430.00 Evap condenser control system i - EA $4,000.00 $4,000.00 $1,750.00 $1,750.00 $5,750.00 Evap condenser balancing 1 - EA $0.00 $274.00 $274.00 $274.00
Chiller, water cooled, 68 tons 1 EA $32,700.00 $32,700.00 $6,325.00 $6,325.00 $39,025.00
Pipe, welded black steel on yoke & roll hgrs, 10' o.c., 4" dia 40 LF $8.65 $346.00 $22.99 $919.60 $1,265.60 Elbow, 90 welded joint, butt, 4" size 8 EA $18.65 $149.20 $172.00 $1,376.00 $1,525.20 Flange, welding neck, 150 lb, 4" pipe size 16 EA $27.00 $432.001 $86.05 $1,376.80 $1,808.80 Valve, iron body, butterfly, tug type, level actuator, 4" size 4 EA $112.00 $448.001 $150.00 $600.00 $1,048.00 Expansion joints, bellows type, flange spool, 4" dia 4 EA $227.00 $908.001 $90.50 $362.00 $1,270.00
Thermometers, stem type, 9" case, 8" stem, 3/4" NPT 4 EA $130.00 $520.001 $15.05 $60.20 $580.20 Gauges, pressure or vacuum, 3-1/2" diameter dial 4 LF $22.50 $90-001 $13.15 $52.60 $142.60 1-1/2" wall 4"dia. CHW piping insulation (silicate w/cover) 20 EA $410.00 $8,200.001 $3.70 $74.00 $8,274.00 Chiller balancing 1 EA $0.00 $0.001 $360.00 $360.00 $360.00
Air Handling Unit, 6,500 cfm central air handling unit i EA $13,000.00 $13,000.00 $7,300.00 $7,300.00 $20,300.00 Air Handling Unit, 9,500 cfm central air handling unit 2 EA $16,300.00 $32,600.00 $7,900.00 $15,800.00 $48,400.00 Air Handling Unit, 11,500 cfm central air handling unit i EA $18,100.00 $18,100.00 $10,900.00 $10,900.00 $29,000.00
Boiler, gas, hot water, 1,500,000 Btuh 1 EA $13,100.00 $13,100.00 $12,800.00 $12,800.00 $25,900.00
HW Pump, base w/ motor, end-suction to 100 gpm 1 EA $4,475.00 $4,475.00 $2,475.00 $2,475.00 $6,950.00 CHIN Pump, base w/ motor, end-suction to 160 gpm 1 EA $4,475.00 $4,475.00 $2,475.00 $2,475.00 $6,950.00 CW Pump, base w/ motor, end-suction to 190 gpm 1 EA $5,000.00 $5,000.00 $2,825.00 $2,825.00 $7,825.00
Expansion Tank, steel ASME rubber diaphragm 1 EA $2,000.00 $2,000.00 $83.50 $83.50 $2,083.50 Air Separator, 1 EA $1,425.00 $1,425.00 $209.00 $209.00 $1,634.00 Chiller plant controls 1 EA $7,000.00 $7,000.00 $3,000.00 $3,000.00 $10,000.00 VFD drives, NEMA 1
VFD drives, NEMA 4X
5
1
EA
EA
$2,375.00
$2,775.00
$11,875.00
$2,775.001-$380.00
$380.00 $1,900.001
$380.001
$13,775.00
$3,155.00
1-1/2" Ball Valve, bronze, threaded, 125 psi 8 EA $74.00 $592.00 $17.70 $141.60 $733.60
Ball Valve, bronze, threaded, 125 psi 2 EA $75.00 $150.00 $18.70 $37.40 $187.40 2' Butterfly Valves, water type, lever actuator, 2001b 8 EA $76.00 $608.00 $19.70 $157.60 $765.60
Butterfly Valves, wafer type, lever actuator, 2001b 2 EA $83.50 $167.00 $62.00 $124.00 $291.00
Butterfly Valves, water type, lever actuator, 2001b 2 EA $102.00 $204.00 $99.00 $198.00 $402.00
Retrofit existing ductwork 500 LF $1.00 $500.00 $4.10 $2,050.00 $2,550.00 Retrofit existing controls 1 LABOR $0.00 $0.00 $10,000.00 $10,000.00 $10,000.00
VAV Box, w/t'stat, cool & HW coils, damper, actuator 14 LABOR $745.00 $10,430.001 $127.00 $1,778.00 $12,208.00
Piping with yoke&roll hangers 10' o.c. -
Tubing, copper, coupling & hanger 10' o.c. 1" dia 280 LF $2.40 $672.00 $4.18 $1,170.40 $1,842.40
Tubing, copper, coupling & hanger 10' o.c. 1-1/2"dia 120 LF $3.53 $423.60 $5.50 $660.00 $1,083.60
Tubing, copper, coupling & hanger 10' o.c. 2' dia 250 LF $5.25 $1,312.50 $6.90 $1,725.00 $3,037.50
Tubing, copper, coupling & hanger 10' o.c. 3' dia 360 LF $10.30 $3,708.00 $9.20 $3,312.00 $7,020.00
Welded, Sch. 40, black, 2"dia CHW piping supply & return 120 LF $3.88 $465.60 $8.15 $978.00 $1,443.60
Welded, Sch. 40, black, 3"dia CHW piping supply & return 250 LF $5.45 $1,362.50 $11.55 $2,887.50 $4,250.00
Welded, Sch. 40, black, 4'dia CHW piping supply & return 60 LF $7.90 $474.00 $13.40 $804.00 $1,278.00
Welded, Sch. 40, black, 4'dia CW piping supply & return 360 LF $7.90 $2,844.00 $13.40 $4,824.00 $7,668.00
Piping Insulation
1-1/2" wall 1"dia. HW piping insulation (silicate w/cover) 280 LF $2.49 $697.20 $3.09 $865.20 $1,562.40
1-1/2' wall 1-1/2"dia. HW piping insulation (silicate w/cover) 120 LF $2.35 $282.00 $3.19 $382.80 $664.80
1-1/2' wall 2"dia. HW piping insulation (silicate w/cover) 250 LF $3.071 $767.50 $3.31 $827.50 $1,595.00
1-1/2" wall 3"dia. HW piping insulation (silicate w/cover) 360 LF $3.51 $1,263.60 $3.43 $1,234.80 $2,498.40
1-1/2" wall 2"dia. CHW piping insulation (silicate w/cover) 120 LF $3.07 $368.40 $3.31 $397.20 $765.60
1-1/2" wall 3"dia. CHW piping insulation (silicate w/cover) 250 LF $3.51 $877.50 $3.43 $857.50 $1,735.00
1-1/2" wall 4"dia. CHW piping insulation (silicate w/cover) 60 LF $4.10 $246.00 $3.70 $222.00 $468.00
Air Balance 1 LS $0.001 $0.00 $10,000.00 $10,000.00 $10,000.00 Supervision 10 WK $0.001 $0.00 $2,500.00 $25,000.00 $25,000.00
ELECTRICAL
Nema 4X 30N1 P disconnect switch i EA $200.00 $200.00 $80.00 $80.00 $280.00 Nema 4X 30A/3P fused disconnect switch 2 EA $250.00 $500.00 $100.00 $200.00 $700.00 FIGS Conduit and feeders 60 LF $2.40 $144.00 $4.00 $240.00 $384.00 EMT Conduit and conductors ioo LF $1.10 $110.00 $2.30 $230.00 $340.00
Electrical connections to VFDs 6 EA $0.00 $0.00 $150.00 $900.00 $900.00 Duclbank to Mechanical Yard 60 LF $0.00 $0.00 $20.00 $1,200.00 $1,200.00
STRUCTURAL
Air Handling Unit support 300 SF $15.001 $4,500.00 $10.00 $3,000.00 $7,500.00 Cooling Tower Steel Support 2160 LF $1.50 $3,240.00 $1.00 $2,160.00 $5,400.00
Retrofit wall partition including finishing 816 SF $10.00 $8,160.00 $5.00 $4,080.001 $12,240.00 Chiller and Tower foundation 100 SF $15.00 $1,500.00 $20.00 $2,000.00 $3,500.00
SUB-TOTAL $257,120.10 $203,032.10 $460,152.20 10% CONTINGENCY $25,712.01 $20,303.21 $46,015.22
SUB-TOTAL $282,832.11 _________ $223,335.31 $506,167.42
8% TAXES $22,626.57
SUB-TOTAL $528,793.99
18% OH & PROFIT $95,182.92 Estimated SDGE Rebates $33,900.00
TOTAL ESTIMATED COST $590,076.91
I
OPINION OF PROBABLE CONSTRUCTION COST ESTIMATE
DAHL, TAYLOR & ASSOCIATES JDATE: May 5, 2004 SHEET 1 OF 2
PRELIMINARY DESIGN
PROJECT NAME: Georgina Cole Library (Option 3)
HVAC Study - Replacing with Outdoor Air Cooled Packaged Chiller (boiler relocated outdoor)
DESIGN DEVELOPMENT
CONSTRUCTION DOCS
ENGINEER DP/AD CHECKED RG QUANTI1)'4 TMATERIAL
DESCRIPTION: NO. OF UNIT PER
UNIT
TOTAL PER TOTAL TOTAL
UNITS UNIT
DEMOLITION WORK:
Misc. Electrical demo/ relocation work 1 LS $500.00 $500.00 $4,000.00 $4,000.00 $4,500.00 Demo existing AHUs & associated piping/accessories 4 LS $0.00 $0.00 $2,500.00 $10,000.00 $10,000.00 Demo exising Chiller & associated piping/accessories 1 LS $0.00 $0.00 $2,000.00 $2,000.00 $2,000.00 Demo existing Cooling Tower & associated piping 1 LS $0.00 $0.00 -$1,502-00 $1,502.00 $1,502.00 Demo existing Boiler & associated piping/accessories 1 LS $0.00 $0.00 $1,000.00 $1,000.00 $1,000.00 Demo existing wall partition for equipmt demo & installation 816 SF $0.00 $0.00 $5.00 $4,080.00 $4,080.00 Entrance doors removal and installation 1 . LS $0.00
LS
$0.00 $1,600.00 $1,600.00 $1,600.00 Removal of asbestos insulation and lead paint 1 $15,000.00 $15,000.00 $15,000.00
NEW WORK:
MECHANICAL
Chiller, packaged, air cooled, 73 tons, coated coils 1 EA $60,000.00 $60,000.00 $3,825.00 $3,825.00 $63,825.00 Pipe, welded black steel on yoke & roll hgrs, 10' o.c., 4" dia 40 LF - $8.65 $346.00 $22.99 $919.60 $1,265.60 Elbow, 90 welded joint, butt, 4' size 8 EA $18.65 $149.20 $172.00 $1,376.00 $1,525.20 Flange, welding neck, 150 lb, 4" pipe size 16 EA $27.00 $432.00 $86.05 $1,376.80 $1,808.80 Valve, iron body, butterfly, lug type, level actuator, 4' size 4 EA $112.00 $448.00 $150.00 $600.00 $1,048.00 Expansion joints, bellows type, flange spool, 4" dia 4 EA $227.00 $908.00 $90.50 $362.00 $1,270.00 Thermometers, stem type, 9' case, 8" stem, 3/4" NPT 4 EA $130.00 $520.00 $15.05 $60.20 $580.20 Gauges, pressure or vacuum, 3-1/2 diameter dial 4 LF $22.50 $90.00 $13.15 $52.60 $142.60 1-1/2" wall 4"dia. CHW piping insulation (silicate w/cover) 20 EA $410.00 $8,200.00 $3.70 $74.00 $8,274.0 Chiller balancing 1 EA $0.00 $0.00 $360.00 $360.00 $360.0
Air Handling Unit, 6,500 cfm central air handling unit 1 EA $13,000.00 $13,000.00 $7,300.00 $7,300.00 $20,300.0 Air Handling Unit, 9,500 cfm central air handling unit 2 EA $16,300.00 $32,600.00 $7,900.00 $15,800.00 $48,400.0 Air Handling Unit, 11,500 cfm central air handling unit 1 EA $18,100.00 $18,100.00 $10,900.00 $10,900.00 $29,000.0
Boiler, gas, hot water, 1,500,000 Btuh 1 EA $13,100.00 $13,100.00 $12,800.00 $12,800.00 $25,900.00
HWPump, base W/ motor, end-suction to 100 gpm 1 EA $4,475.00 $4,475.00 $2,475.00 $2,475.00 $6,950.00 CHW Pump, base WI motor, end-suction to 160 gpm 1 EA $4,475.00 $4,475.00 $2,475.00 $2,475.00 $6,950.00
Expansion Tank, steel ASME rubber diaphragm 1 EA $2,000.00 $2,000.00 $83.50 $83.50 $2,083.50 Air Seperator 1 EA $1,425.00 $1,425.001 $209.00 $209.00 $1,634.00 Chiller plant controls 1 EA $7,000.00 $7,000.001 $3,000.00 $3,000.00 $10,000.00 fFD drives, NEMA 1 4 EA $2,375.00 $9,500.001 $380.00 $1,520.00 $11,020.00 VFD drives, NEMA4X 1 EA $2,775.00 $2,775.00 $380.00 $380.00 $3,155.00
1-1/2" Ball Valve, bronze, threaded, 125 psi 8 EA $74.00 $592.00 $17.70 $141.60 $733.60 2" Ball Valve, bronze, threaded, 125 psi 2 EA $75.00 $150.00 $18.70 $37.40 $187.40 Butterfly Valves, wafer type, lever actuator, 2001b 8 EA $76.00 $608.00 $19.70 $157.60 $765.60 Butterfly Valves, wafer type, lever actuator, 200Ib 2 EA $83.50 $167.001 $62.00 $124.00 $291.00 4" Butterfly Valves, wafer type, lever actuator, 2001b 2 EA $102.00 $204.00 $99.00 $198.00 $402.00
Retrofit existing ductwork , 500 LF $1.00 $500.00 $4.10 $2,050.00 $2,550.00 Retrofit existing controls 1 LABOR $0.00 $0.00 $10,000.00 $10,000.00 $10,000.00
[
VAV Box, w/t'stat, cool & HW coils, damper, actuator 14 LABOR $745.00 $10,430.00 $127.00 $1,778.00 $12,208.00
Piping with yoke&roll hangers 10' o.c.
Tubing, copper, coupling & hanger 10' o.c. 1 dia 280 LF $2.40 $672.00 $4.18 $1,170.40 $1,842.40
Tubing, copper, coupling & hanger 10' o.c. 1-1/2" dia 120 LF $3.53 $423.601 $5.50 $660.00 $1,083.60
Tubing, copper, coupling & hanger 10' o.c. 2' dia 250 LF $5.25 $1,312.501 $6.90 $1,725.00 $3,037.50
Tubing, copper, coupling & hanger 10' o.c. 3' dia 360 LF $10.30 $3,708.001 $9.20 $3,312.00 $7,020.00
Welded, Sch. 40, black, 2"dia CHW piping supply & return 120 LF $3.88 $465.601 $8.15 $978.00 $1,443.60
Welded, Sch. 40, black, 3'dia CHW piping supply & return 250 LF $5.45 $1,362.501 $11.55 $2,887.50 $4,250.00
Welded, Sch. 40, black, 4'dia CHW piping supply & return 400 LF $7.90 $3,160.001 $13.40 $5,360.00 $8,520.00
Piping Insulation
1-1/2 wall 1'dia. HW piping insulation (silicate w/cover) 280 LF $2.49 $697.20 $3.09 $865.20 $1,562.40 1-1/2 wall 1-1/2"dia. HW piping insulation (silicate w/cover) 120 LF $2.35 $282.00 $3.19 $382.80 $664.80
1-1/2 wall 2"dia. HW piping insulation (silicate w/cover) 250 LF $3.07 $767.50 $3.31 $827.50 $1,595.00
1-1/2w wall 3dia. HW piping insulation (silicate w/cover) 360 LF $3.51 $1,263.60 $3.43 $1,234.80 $2,498.40
1-1/2" wall 2"dia. CHW piping insulation (silicate w/cover) 120 LF $3.07 $368.401 $3.31 $397.20 $765.60
1-1/2' wall 3"dia. CHW piping insulation (silicate w/cover) 250 LF $3.51 $877.501 $3.43 $857.50 $1,735.00
1-1/2 wall 4dia. CHW piping insulation (silicate w/cover) 400 LF $4.10 $1,640.001 $3.70 $1,480.00 $3,120.00
Air Balance 1 LS $0.00 $0.001 $10,000.00 $10,000.00 $10,000.00
Supervision 10 WK $0.00 $0.00 $2,500.00 $25,000.00 $25,000.00
ELECTRICAL
Nema 4X 30A/1 P disconnect switch 1 EA $200.00 $200.00 $80.00 $80.00 $280.00
Nema 4X 30A/3P fused disconnect switch 1 EA $250.00 $250.00 $100.00 $100.00 $350.00
RGS Conduit and feeders 45 LF $2.40 $108.00 $4.00 $180.00 $288.00
EMT Conduit and conductors ioo LF $1.10 $110.00 $2.30 $230.00 $340.00 Electrical connections to VFDs 5 EA $0.00 $0.00 $150.00 $750.00 $750.00
Ductbank to Mechanical Yard 60 LF $0.00 $0.00 $26.00 $1,560.00 $1,560.00 450A CB 1 EA $2,450.00 $2,450.00 $200.00 $200.00 $2,650.00 250 kcmil 420 CLF $0.95 $399.00 $0.90 $378.00 $777.00
NEMA 4X 800AS/450AF disconnect i EA $3,000.00 $3,000.00 $520.00 $520.00 $3520.00
STRUCTURAL
Air Handling Unit support 300 SF $15.00 $4,500.00 $10.00 $3,000.00 $7,500.00
Cooling Tower Steel Support 2160 LF $1.50 $3,240.00 $1.00 $2,160.00 $5,400.00
Retrofit wall partition including finishing 816 SF $10.00 $8,160.00 $5.001 $4,080.00 $12,240.00
Chiller and cooling tower foundation 100 SF $15.00 $1,500.00 $20.001 $2,000.001 $3,500.00
SUB-TOTAL $233,611.60 $191,993.20 $425604.80
10% CONTINGENCY $23,361.16 $19,199.32 $42,560.48
SUB-TOTAL $256,972.76 _________ $211,192.52 $468,165.28
8% TAXES $20,557.82
SUB-TOTAL $488,723.10
18% OH & PROFIT $87,970.16
Estimated SDGE Rebate $18900.00
TOTAL ESTIMATED COST $557,793.26
OPINION OF PROBABLE CONSTRUCTION COST ESTIMATE
DAHL, TAYLOR & ASSOCIATES bDATE: May 5, 2004 SHEET 1 OF 2
PRELIMINARY DESIGN PROJECT NAME: Georgina Cole Library (Option 4)
HVAC Study - Replacing with Condensing Units (boiler relocated outdoor)
DESIGN DEVELOPMENT
CONSTRUCTION DOCS
ENGINEER DP/AD CHECKED RG QUANTITY MATERIAL ':."LABOR'.` DESCRIPTION: NO. OF UNIT PER
UNIT
TOTAL PER TOTAL TOTAL
UNITS UNIT
DEMOLITION WORK:
Misc. Electrical demo / relocation work 1 LS $550.00 $550.00 $4,500.00 $4,500.00 $5,050.00 Demo existing AHUs & associated piping/accessories 4 LS - $0.00 $0.00 $2,500.00 $10,000.00 $10,000.00 Demo exising Chiller & associated piping/accessories 1
- LS $0.00 $0.00 $2,000.00 $2,000.00 $2,000.00 Demo existing Cooling Tower & associated piping 1
-
LS
- $0.00 $0.00 $1,502.00 $1,502.00 $1,502.00 Demo existing Boiler & associated piping/accessories 1 - _S $0.00 $0.00 $1,000.00 $1,000.00 $1,000.00 Demo existing wall partition for equipmt demo & installation 816 SF $0.00 $0.00 $5.00 $4,080.00 $4,080.00 Entrance doors removal and installation 1 LS $0.00
LS
$0.00 $1,600.00 $1,600.00 $1,600.00 Removal of asbestos insulation and lead paint 1 $15,000.00 $15,000.00 $15,000.00
NEW WORK:
MECHANICAL
Condensing Unit, air cooled, compressor, 20 tons 1 EA $10,400.00 $10,400.00 $1,825.00 $1,825.00 $12,225.00 Condensing Unit, air cooled, compressor, 25 tons 2 EA $12,600.00 $25,200.00 $2,100.00 $4,200.00 $29,400.00 Condensing Unit, air cooled, compressor, 40 tons 1 EA $18,100.00 $18,100.00 $3,675.00 $3,675-00 $21,775.00
Air Handling Unit, 6,500 cfm central air handling unit 1 EA $13,000.00 $13,000.00 $7,300.00 $7,300.00 $20,300.00 Air Handling Unit, 9,500 cfm central air handling unit 2 EA $16,300.00 $32,600.00 $7,900.00 $15,800.00 $48,400.00 Air Handling Unit, 11,500 cfm central air handling unit 1 EA $18,100.00 $18,100.00 $10,900.00 $10,900.00 $29,000.00
Boiler, gas, hot water, 1,500,000 Btuh 1 EA $13,100.00 $13,100.00 $12,800.00 $12,800.00 $25,900.00
HW Pump, base w/ motor, end-suction to 100 gpm 1 EA $4,475.00 $4,475.00 $2,475.00 $2,475.00 $6,950.00
(FD drives, NEMA 1 4 EA $2,375.00 $9,500.00 $380.00 $1,520.00 $11,020.00
1-1/2" Ball Valve, bronze, threaded, 125 psi 8 EA $74.00 $592.001 $17.70 $141.60 $733.60 2' Ball Valve, bronze, threaded, 125 psi 2 EA $75.00 $150.001 $18.70 $37.40 $187.40
Retrofit existing ductwork
-500 LF $1.00 $500.00 $4.10 $2,050.00 $2,550.00 Retrofit existing controls 1 LABOR $0.00 $0.00 $10,000.00 $10,000.00 $10,000.00
VAV Box, w/t'stat, cool & HW coils, damper, actuator 14 LABOR $745.00 $10,430.00 $127.00 $1,778.00 $12,208.00
Piping with yoke&roll hangers 10' 0-c.
Tubing, copper, coupling & hanger 10' o.c. 1 dia 280 LF $2.40 $672.00 $4.18 $1,170.40 $1,842.40 Tubing, copper, coupling & hanger 10' o.c. 1-1/2' dia 320 LF $3.53 $1,129.60 $5.50 $1,760.00 $2,889.60 Tubing, copper, coupling & hanger 10' o.c. 2 dia 450 LF $5.25 $2,362.50 $6.90 $3,105.00 $5,467.50 Tubing, copper, coupling & hanger 10' o.c. 3" dia 360 LF $10.30 $3,708.001 $9.20 $3,312.00 $7,020.00
Piping Insulation
1-1/2" wall 1 "dia. I-lW piping insulation (silicate w/cover) 280 LF $2.49 $697.20 $3.09 $865.20 $1,562.40 1-1/2" wall 1-1/2dia. i-lW piping insulation (silicate w/cover) 120 LF $2.35 $282.00 $3.19 $382.80 $664.80 1-1/2" wall 2dia. HW piping insulation (silicate w/cover) 250 LF $3.07 $767.50 $3.31 $827.50 $1,595.00 1-1/2" wall 3'dia. HW piping insulation (silicate w/cover) 360 LF $3.51 $1,263.60 $3.43 $1,234.801 $2,498.40 1' thick polyethylene foam insulation 400 LF $2.56 $1,024.00 $1.15 ' $460.001 $1,484.00
I
I
I
1
I
I
I
I
I
Air Balance 1 LS $0.00 $0.00 $10,000.00 $10,000.00 $10,000.00
Supervision io WK $0.00 $0.00 $2,500.00 $25,000.00 $25,000.00
ELECTRICAL
Nema 4X 30A/1 P disconnect switch 1 EA $200.00 $200.00 $80.00 $80.00 $280.00
Nema 4X 60A/3P fused disconnect switch 4 EA $350.00 $1,400.00 $125.00 $500.00 $1,900.00
RGS Conduit and feeders 40 LF $2.40 $96.00 $4.00 $160.00 $256.00
EMT Conduit and conductors 500 LF $1.10 $550.00 $2.30 $1,150.00 $1,700.00
Electrical connections to VFDs 4 EA $0.00 $0.00 $150.00 $600.00 $600.00
225A Panelboard 1 EA $900.00 $900.00 $600.00
$45.00
$600.00 $1,500.00
Branch circuit breakers. 4 EA $75.00 $300.00 $180.00 $480.00
STRUCTURAL
Air Handling Unit support 300 SF $15.001 $4,500.001 $10.00 $3,000.00 $7,500.00
Retrofit wall partition including finishing 816 SF $10.00 $8,1_60.001 $5.001 $4,080.00 $12,240.00
SUB-TOTAL $184,709.40 $172,651.70 $357,361.10
10% CONTINGENCY $18,470.94 $17,265.17 $35,736.11
SUB-TOTAL $203,180.34 $189,916.87 $393,097.21
8% TAXES $16,254.43
SUB-TOTAL $409,351.64
18% OH & PROFIT $73,683.29
Estimated SDGE Rebate $18,900.00
TOTAL ESTIMATED COST $464,134.93
LIFE CYCLE COST ANALYSIS ASSUMPTIONS
Assumptions
lo year life cycle
4.6% Nominal Discount Rate. Based on the current 10 year interest rate of
the federal Office of Management and Budget (OMB)
The available rebates through San Diego Gas and Electric are estimates
and will vary depending on the actual installed equipment and the
available rebates funds at the time of application. The rebates are based
on the following discounts:-*
$80/horsepower for air handlers installed with variable speed drives
$1 .00/thousand btus for boilers with 84% efficiency
$30,000 for Option 1 and Option 2 chiller replacement
$15,000 for Option 3 and Option 4 chiller replacement
The estimated annual maintenance cost for Option 1 includes the service
contracts, cooling tower water treatment and annual water consumption
costs
The estimated annual maintenance cost for Option 2 includes the service
contracts, cooling tower water treatment and annual water consumption
costs
I • The estimated annual maintenance cost for Option 3 and Option 4
includes just the service contracts
I . The estimated annual gas cost is based on the library's historical billing
and is the same for all options
. The estimated annual electric cost is based on the library's historical
I billing. The library's monthly electrical bill averages around $5,250 or
$63,000 per year. This bill includes the lighting, computer and
miscellaneous load on the receptacles. Base on industry rule of thumb
I estimates, the HVAC electrical load accounts for approximately40% of the
total electrical consumption. The LCC analysis will use $25,200 for the
annual electrical cost for the HVAC equipment.
Estimated Electrical Savings
I Information on the efficiency of the existing chiller was not available. HVAC
equipment manufactured in the 1970s has Coefficient of Performance (COP)
I . ranging fromi .5 to 2.5 (See Reference). The existing chiller was manufactured
in 1966. A COP of 2.0 will be used as the baseline efficiency for the LCC
analysis.
The following equations were used to compare the chiller efficiencies:
I
I
I kW/ton = 1
kW/ton =3.516/COP
The baseline efficiency for existing chiller will be 3.516/2.0 = 1.76 kW/ton
The Energy Efficiency Ratios or Coefficient of Performance were base on
equipment manufactured by Carrier Corporation
Option 1: Water-cooled screw chiller, 0.72 kW/Ton
Option 2: Evaporative cooled screw chiller, 9.4 EER = 1.27 kW/ton
Option 3: Air-cooled chiller, 9.5 EER = 1.26 kW/ton
I Option 4: Split System air handlers, 10 EER = 1.2 kW/ton
KW savings = Tons x (baseline efficiency - new efficiency)
Option 1 kW savings = 70 tons X (1.76 -.72) = 72.8kW
1 Option 2 kW savings 70 tons X (1.76 - 1.27) = 34.3 kW
Option 3 kW savings = 70 tons X (1.76 - .1 .26) = 35 kW
Option 4 kW savings = 70 tons X (1.76 - 1.2) = 39.2 kW
I Existing Chiller = 70 tons X 1.76 = 123.2 kW
Option 1 is approximately 60% more efficient than the existing chiller. 60% X
1 $25,200 = $15,120 will be saved per year. $10,080 will be used as the annual
electrical cost for Option 1.
Option 2 is approximately 28% more efficient than the existing chiller. 28% X
$25,200 = $7,056 will be saved per year. $18,144 will be used as the annual
electrical cost for Option, 2.
Option 3 is approximately 28.5% more efficient than the existing chiller. 28.5% X
$25,200 = $7,182 will be saved per year. $18,018 will be used as-the annual
electrical cost for Option 3.
I Option 4 is approximately 32% more efficient than the existing chiller. 32%)(
$25,200 = $8,064 will be saved per year. $17,136 will be used as the annual
electrical cost for Option 4.
I
Washington State Department of
General Administration
Division of Engineering and Architectural Services
ENERGY LIFE CYCLE COST ANALYSIS SPREADSHEET "ELCCA99.XLS". 05-May-04
----------------------------PROJECT DATA......................................
PROJECT: Georgina Cole Library BY: Dahl, Taylor & Associates
ALT. No.: HVAC Replacement Study Option 1 PERFORMED BY: Roly Geniza
DISCOUNT & ESCALATION RealRates as of June 199
Enter 1 or 0 for each fuel type: Years: Rate:
1 = Yes Real Discount Rate (i) 1,998 - 2,030 4.6%
0 = No Electricity ........ . ............ 1,998 - 2,006 0.7%
IOU Electric 1 (Investor Owned Utility) 2,007 -2,016 ........0.7% POU Electric* . 0 2,017 - 2,030 0.7%
Natural Gas Fuel? 1 Natural Gas ....................1,998 - 2,006 0.7% Propane Fuel?
Oil Fuel?
0
0
2,007 - 2,016
2,017 - 2,030
0.6%
0.7%
Coal Fuel? 0 Maintenance 1,998 - 2,030 0.5%
Wood/Renewable 0 Replacement.% 1,998 - 2,030 0.0%
-. - -. --
Inflation (Nominal ,not used) 1,998 -2,030 3.5%
Public Utility District (PTJD), Municipality, Rural Electric, and Electric Cooperative
ANNUAL REAL CASH FLOW ----------------------------
$780,525 =10-year LCC
(Begin) First & Annual Annual Annual Total Present Present Present Year Replace. Maint. Nat.Gas Electric. Annual Worth Worth of Worth of Costs Costs Costs Costs Costs Factor Annual Cumulative 2005 $555,874 $7,500 $5,000 $15,120 $27,620 (1-i-i)&n Costs Costs 2,005 $555,874 -- -- -- $555,874 1.00 $555,874 $555,874
2,006 0 7,538 5,035 15,226 27,798 0.96 26,576 582,450
2,007 0 7,575 5,065 15,332 27,973 0.91 25,567 608,016
2,008 0 7,613 5,096 15,440 28,148 0.87 24,596 632,612 2,009 0 7,651 5,126 15,548 28,325 0.84 23,662 656,274
2,010 0 7,689 5,157 15,657 28,503 0.80 22,763 679,037
2,011 0 7,728 5,188 15,766 28,682 0.76 21,899 700,936
2,012 . 0 7,766 5,219 15,877 28,862 0.73 21,067 722,003
2,013 0 7,805 5,250 15,988 29,043 0.70 20,267 742,270
2,014 0 7,844 5,282 16,100 29,226 0.67 19,498 761,768
2,015 0 7,884 5,314 16,212 29,409 0.64 18,757 780,525 2,016 0 . 0.61 0 780,525 2,017 0 0.58 . 0 780,525
2,018 0 0.56 0 780,525
2,019 0 . 0.53 0 780,525 2,020 0 0.51 0 780,525 2,021 0 . 0.49 0 780,525
2,022 0 0.47 0 780,525 2,023 0 0.45 0 780,525
2,024 0 0.43 0 780,525 2,025 0 0.41 0 780,525
2,026 0 0.39 0 780,525 2,027 0 0.37 0 780,525 2,028 0 0.36 0 780,525
2,029 0. 0.34 0 780,525
2,030 0 0.32 0 780,525
2,031 0 0.31 0 780,525 2,032 0 0.30 0 780,525 2,033 0 . 0.28 0 780,525
2,034 0 0.27 0 780,525 2,035 0 0.26 0 780,525
Totals: $555,874 $77,094 $51,731 $157,145 $841,844 $780,525 =10-yearLCC
lst+Repl Maint Fuel Elec
INWashington State Department of
General Administration
Division of Engineering and Architectural Services
ENERGY LIFE CYCLE COST ANALYSIS SPREADSHEET "ELCCA99.XLS' 05-May-04
----------------------------PROJECT DATA ---------------------------- 7 ---------
PROJECT: Georgina Cole Library BY: Dahl, Taylor & Associates
ALT. No.: HVAC Replacement Study Option 2 PERFORMED BY: Roly Geniza
DISCOUNT & ESCALATION Real Rates as of June 1998 -------------------------------------------
Enter I or 0 for each fuel type:
1 = Yes
0 = No
IOU Electric 1
POU Electric* 0
Natural Gas Fuel? 1
Propane Fuel? 0
Oil Fuel? 0
Coal Fuel? 0
Wood/Renewable 0
•
Years: Rate:
Real Discount Rate (i) 1,998 - 2,030 4.6%
Electricity.....................1,998 - 2,006
(Investor Owned Utility) 2,007 - 2,016 ........0.7%
2,017 -2,030
0.7%
0.7%
Natural Gas .....................1,998 - 2,006
2,007-2,016
2,017 - 2,030
0.7%
0.6%
0.7%
Maintenance 1,998 - 2,030 0.5%
Replacement 1,998 - 2,030 0.0%
Inflation (Nominal ,not used) 1,998 -2,030 3.5%
* Public Utility District (PUD), Municipality, Rural Electric, and Electric Cooperative
$831,332 =10-year LCC ANNUAL REAL CASH FLOW
(Begin) First & Annual Annual Annual . Total Present Present . Present Year Replace. Maint. Nat.Gas Electric Annual Worth Worth of Worth of
Costs Costs Costs Costs Costs Factor Annual Cumulative 2005 $590,077 $6,500 $5,000 $18,144 $29,644 (1+i)" -n Costs Costs
2,005 $590,077 -- -- -- $590,077 1.00 $590,077 $590,077 2,006 0 6,533 5,035 18,271 29,839 0.96 28,526 618,603 2,007 . 0 6,565 5,065 18,399 30,029 0.91 27,446 646,049
2,008 0 6,598 5,096 18,528 30,221 0.87 26,407 672,456 2,009 0 6,631 5,126 18,657 30,415 0.84 25,407 . 697,863 2,010 0 6,664 5,157 18,788 30,609 0.80 24,445 722,309
2,011 0 6,697 5,188 18,920 30,805 0.76 23,520 745,828 2,012 0 6,731 5,219 19,052 31,002 0.73 22,629 768,457 2,013 0 6,765 5,250 19,185 31,200 0.70 21,772 790,229
2,014 0 6,798 5,282 19,320 31,400 0.67 20,948 811,177 2,015 0 6,832 5,314 19,455 31,601 0.64 20,155 831,332 2,016 0 0.61 0 831,332 2,017 0 0.58 0 831,332 2,018 0 , 0.56 0 831,332 2,019 0 . 0.53 0 831,332 2,020 0 0.51 0 831,332 2,021 0 0.49 0 831,332 2,022 0 0.47 0 831,332 2,023 0 0.45 0 831,332 2,024 0 0.43 0 831,332 2,025 0 0.41 0 831,332 2,026 0 0.39 0 831,332 2,027 0 0.37 0 831,332 2,028 0 0.36 0 831,332 2,029 0 0.34 0 831,332
2,030 0 0.32 0 831,332 2,031 0 0.31 0 831,332 2,032 0 0.30 0 831,332 2,033 0 0.28 0 831,332 2,034 0 0.27 0 831,332 2,035 0 . 0.26 0 831,332
Totals: $590,077 $66,815 $51,731 $188,574 $897,197 $831,332 =10-year LCC
lst+Repl Maint Fuel Elec
Washington State Department of
General Administration
Division of Engineering and Architectural Services
ENERGY LIFE CYCLE COST ANALYSIS SPREADSHEET "ELCCA99.XLS" 05-May-04
---------------------------PROJECT DATA
PROJECT: Georgina Cole Library BY: Dahl, Taylor & Associates
ALT. No.: HVAC Replacement Study Option 3 PERFORMED BY: Roly Geniza
DISCOUNT & ESCALATION RealRates as of June 199
Enter 1 or 0 for each fuel type:
1 = Yes
0=No
IOU Electric 1
POU Electric* 0
Natural Gas Fuel? 1
Propane Fuel? 0
Oil Fuel? 0
Coal Fu6l? 0
Wood/Renewable 0
Years: Rate:
Real Discount Rate (i) 1,998- 2,030 4.6%
Electricity ..................... 1,998 - 2,006
(Investor Owned Utility) 2,007 - 2,016 ........0.7%
2,017 - 2,030
0.7%
0.7%
Natural Gas ....................1,998 - 2,006
2,007 - 2,016
2,017 -2,030
0.7%
0.6%
0.7%
Maintenance 1,998 - 2,030 . 0.5%
Replacement 1,998 -2,030 0.0%
-
Inflation (Nominal , not used) 1,998 - 2,030 3.5%
Public F ublic Utility District (PUD), Municipality, Rural Electric, and Electric Cooperative
$781,863 =10-year LCC
ANNUAL REAL CASH FLOWS-----------------
(Begin) First & Annual Annual Annual Total Present Present Present Year Replace. Maint. Nat.Gas Electric Annual Worth Worth of Worth of
Costs Costs Costs Costs Costs Factor Annual Cumulative
2005 $557,794 $4,500 $5,000 $18,018 $27,518 (1+i)" -n Costs Costs
2,005 $557,794 -- -- -- $557,794 1.00 $557,794 $557,794
2,006 0 4,523 5,035 18,144 27.702 0.96 26,483 584,277
2,007 0 4,545 5,065 18,271 27,881 0.91 25,483 609,760
2,008 0 4,568 5,096 18,399 28,062 0.87 24,521 634,281
2,009 0 4,591 5,126 18,528 28,245 0.84 23,594 657,876
2,010 0 4,614 5,157 18,658 28,428 0.80 22,703 680,579
2,011 0 4,637 5,188 18,788 28,613 0.76 21,846 702,425
2,012 0 4,660 5,219 18,920 28,799 0.73 21,021 723,445
2,013 0 4,683 5,250 19,052 28,986 0.70 20,227 743,672
2,014 0 4,707 5,282 19,185 29,174 0.67 19,463 763,135
2,015 0 4,730 5,314 19,320 29,363 0.64 18,728 781,863
2,016 0 0.61 0 781,863
2,017 0 0.58 0 781,863
2,018 0 0.56 0 781,863
2,019 0 0.53 0 781,863
2,020 0 S 0.51 0 781,863
2,021 0 0.49 0 781,863
2,022 0 0.47 0 781,863
2,023 0 5 0.45 0 781,863
2,024 0 0.43 0 781,863
2,025 0 5 0.41 0 781,863
2,026 0 0.39 0 781,863
2,027 0 0.37 0 781,863
2,028 0 0.36 0 781,863
2,029 0 0.34 0 781,863
2,030 0 0.32 0 781,863
2,031 0 0.31 S 0 781,863
2,032 0 0.30 0 781,863 2,033 0 0.28 0 781,863
2,034 0 0.27 0 781,863 2,035 0 5 0.26 0 781,863
Totals: $557,794 $46,256 $51,731 $187,265 $843,046 $781,863 =10-yearLCC
lst+Repl Maint Fuel Elec
RN Washington State Department of
General Administration
Division of Engineering and Architectural Services
ENERGY LIFE CYCLE COST ANALYSIS SPREADSHEET ELCCA99 .XLS ' 05-May-04
-----------------------------PROJECT DATA ----------------------------------------------------------------
PROJECT: Georgina Cole Library BY: Dahl, Taylor & Associates
ALT. No.: HVAC Replacement Study Option 4 PERFORMED BY: Roly Geniza
DISCOUNT & ESCALATION Real Rates as of June 1998------
Enter 1 or 0 for each fuel type:
1 = Yes
0 = No
IOU Electric 1
POU Electric* 0
Natural Gas Fuel? 1
Propane Fuel? 0
Oil Fuel? 0
Coal Fuel? 0
Wood/Renewable 0
Years: Rate:
Real Discount Rate (i) 1,998 - 2,030 4.6%
Electricity.....................1,998 - 2,006
(Investor Owned Utility) 2,007 -2,016 ........0.7%
2,017 -2,030
0.7%
0.7%,
Natural Gas .......... ........... 1,998 -2,006
2,007 -2,016
2,017 -2,030
0.7%
0.6%
0.7%
Maintenance 1,998 -2,030 0.5%
Replacement 1,998 - 2,030 0.0%
Inflation (Nominal ,not used) 1,998-2,030 3.5% * Public Utility District (PUD), Municipality, Rural Electric, and Electric Cooperative
$681,005 =10-year LCC ANNUAL REAL CASH FLOWS--------------
(Begin) First & Annual Annual Annual Total Present Present Present Year Replace. Maint. Nat.Gas Electric Annual Worth Worth of Worth of Costs Costs Costs Costs Costs Factor Annual Cumulative 2005 $464,135 $4,500 $5,000 $17,136 $26,636 (1+i-n Costs Costs 2,005 $464,135 -- -- -- $464,135 1.00 $464,135 $464,135 2,006 0 4,523 5,035 17,256 26,813 0.96 25,634 489,769 2,007 0 4,545 5,065 17,377 26,987 0.91 24,666 514,435 2,008 0 4,568 5,096 17,498 27,162 0.87 23,734 538,169 2,009 0 4,591 5,126 17,621 27,338 0.84 22,837 . 561,005 2,010 0 - 4,614 5,157 17,744 27,515 0.80 21,974 582,979 2,011 0 4,637 5,188 17,868 27,693 0.76 ' 21,144 604,123 2,012 0 4,660 5,219 17,994 27,872 0.73 20,345 624,468 2,013 0 4,683 5,250 18,119 ' 28,053 0.70 19,576 644,044 2,014 0 4,707 5,282 18,246 28,235 0.67 18,836 662,880 2,015 0 4,730 5,314 18,374 28,418 0.64 18,125 681,005 2,016 0 0.61 0 681,005 2,017 0 0.58 0 681,005 2,018 0 0.56 ' 0 681,005 2,019 0 0.53 0 681,005 2,020 0 0.51 0 681,005 2,021 0 - 0.49 0 681,005 2,022 0 0.47 0 681,005 2,023 0 -0.45 - 0 681,005 2,024 0 0.43 0 681,005 2,025 0 0.41 0 681,005 2,026 0 0.39 0 681,005 2,027 0 0.37 0 681,005 2,028 0 0.36 0 681,005 2,029 0 0.34 0 681,005 2,030 0 - 0.32 0 681,005 2,031 0 0.31 0 681,005 2,032 0 , 0.30 0 681,005 2,033 0 0.28 0 681,005 2,034 0 0.27 0 681,005 2,035 0 0.26 0 681,005
Totals: $464,135 $46,256 $51,731 $178,098 $740,221 $681,005 =10-yearLCC
lst+Repl Maint Fuel Elec
REFERENCES
Uniform Building Code 1997— International Conference of
Building Officials (lCBO), 5360 Workman, Mill Road, Whittier,.
•CA 90601
Uniform Mechanical Code 1997 - ICBO, 5360 Workman Mill
Road, Whittier, CA 90601 •
"Deemed Savings, Installation & Efficiency Standards,
Commercial and Industrial Cooling Equipment," Prepared for
the Public Utility Commission of Texas by: Nexant, Inc., 1401
Walnut Street, Suite 403, Boulder, CO 80302, May 2003.
Washington State Department of General Administration,
Division of Engineering and Architectural Services, Energy Life
Cycle Cost Analysis Spreadsheet.
Woodrow Wilson School of Public and International Affairs,
"Solar Technology to Today's Energy Needs, Chapter 12,
Heating and Cooling Equipment." ',1 978 •