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ENERGY STAR Homes Deemed Savings Estimates
Energy Efficiency Implementation Docket Filing
1. Overview
The purpose of the analysis presented herein is to generate deemed savings estimates for
ENERGY STAR Homes market transformation programs for Entergy Gulf States Utilities
(hereinafter to be referred to as Entergy), Reliant Energy-HL&P (Reliant), Southwestern Public
Service (SPS), and TXU Electric (TXU). Estimates for both peak period kW and annual kWh
savings are determined. The values presented in this report have been evaluated; taking into
account a baseline study characterizing relevant new home construction markets in the TXU
service territory. The values are subject to revision pending the results of additional market
studies, and the final approval of builder option packages (BOPS) for Texas by the Environmental
Protection Agency (EPA). A summary of the findings of this report is presented in Table 1.1.
Table 1.1. HERS Ratings, Savings and Incentive Summary
Utility Average Average Average Energy Average
ENERGY STAR Demand Savings per Incentive
HERS Savings per Home Payment per
Rating Home (kW) (kWh/year) Home ($)
Reliant-HL&P / Entergy 87.7 1.2 2,891 $ 635
TXU Electric 87.2 0.9 2,285 $ 496
SPS 86.8 1.1 1,177 $ 435
2. Modeling and Analysis Plan
2.1. Methodology
The method used to determine the deemed savings estimates for the ENERGY STAR Homes
programs for these utilities involves modeling prototypical homes using DOE-2.1E Building
Energy Simulation software. Several prototype homes are modeled with both a baseline
construction and energy-efficient construction. The difference in demand and energy use
between these two construction types will determine the initial deemed savings estimates for the
utility programs.
2.2. Baseline Construction
2.2.1. Typical New Construction
RLW Analytics conducted a baseline study1 to characterize the energy use characteristics of
the actual new home market in TXU's service territory. Home Energy Rating System (HERS)
inspections were performed on 99 newly built homes in the Dallas metroplex. The average
HERS rating for these homes was found to be 80.2, with a standard deviation of
approximately 2. This is very close to the Model Energy Code (MEC) HERS standard rating
1
TXU Electric and Gas Residential New Construction Baseline Assessment. RLW Analytics, Inc., January
2001.
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of 80. This result validates the initial assumption of using the MEC as the baseline for
determining energy savings (see Section 3.1. Model Validation below). Reliant and Entergy
anticipate the completion of baseline studies in their service territories in mid 2001, and other
utilities choosing to participate in the ENERGY STAR Homes program will be completing studies
as needed later in the program cycle. In the interim, the MEC will be used to establish the
baseline for all utility programs considered in this filing.
2.2.2. Model Energy Code
As mentioned above, the baseline construction assumed for modeling savings in the pilot year
is based upon the minimum requirements to comply with the 1995 Model Energy Code (MEC)
prepared by the Council of American Building Officials (CABO). The state of Texas to date has
not adopted a statewide residential energy code, though they are pushing for local adoption of
the 2000 IECC in the Dallas/Fort Worth and Houston metro areas2. However, the MEC (1992,
1993 and 1995 versions) is the most widely adopted residential energy standard in the United
States1. The most recent iteration of the MEC is found in the 1998 International Energy
Conservation Code (IECC). The requirements of the 1995 MEC and the 1998 IECC are very
similar3.
An ENERGY STAR Home is characterized as being 30% more energy efficient than a similar
home built to the MEC. This results in a HERS rating of 86, compared to the MEC HERS
standard rating of 80. Therefore, the HERS Reference Home (based upon the MEC) will be
used to determine the baseline energy use.
2.3. ENERGY STAR Homes Construction
The construction of the energy-efficient ENERGY STAR home prototypes is based upon the original
EPA-specified regional Builder Option Package (BOP) for Zone 5, which includes most of the
state of Texas.
In anticipation of changes to the BOPs under review at the EPA to make them more stringent and
applicable to the Texas climate, the maximum allowable window area in the ENERGY STAR home
prototype, based on the original BOP, was reduced from 21% of floor area to 15%. This
modification appears to be consistent with the changes to the BOPs currently under review by the
EPA; the revised BOPs for Texas reduce the overall allowed window-size, though larger window
areas may be permitted for windows with higher performance characteristics. The range of
allowable window sizes in the draft BOPs is between 12 and 21% of the floor area, depending on
window type.
2.4. Size Categories
The deemed savings values for the ENERGY STAR Homes program are separated into three size
categories. These categories and corresponding model parameters are found in Table 2.1.
Table 2.1. Home size categories for determining deemed savings
Size Modeled Number of
category floor area Conditioned
2
Status of State Energy Codes newsletter. Building Codes Assistance Project, July/August 2000.
3
Differences Between the 1995 CABO Model Energy Code and the 1998 ICC International Energy
Conservation Code. R.G. Lucas and D.B. Meyers for the U.S. DOE, April 2000.
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(floor area, ft2) (ft2) Stories
<=1,500 1,250 1
1,501 < 3,000 2,250 2
>= 3,000 3,250 2
2.5. Weather Zones and Weather Files
Typical weather data (TMY2)4 are used to determine the deemed savings for each of the utility
service territories, as shown in Table 2.2.
Table 2.2. Utility regions and weather files used in modeling
Utility Primary Region Weather file (TMY2)
Reliant-HL&P Southern/Houston Metro Houston, TX
Entergy Southern/Beaumont Houston, TX
TXU Electric Northern/Dallas Metro Dallas/Ft. Worth, TX
SPS Northern/Panhandle Amarillo, TX
2.6. Modeling Assumptions
Schiller Associates has made several assumptions about the prototype buildings to expedite and
simplify the simulation process. These assumptions include the following:
Slab-on-grade foundation
Equal-dimension floor plan (square)
Two-car attached garage
2 2 2
o 400 ft total area; 240 ft adjacent wall space; 225 ft conditioned space above
8/12 roof pitch
Brick exterior
Space temperatures to be maintained under manual control:
o Winter: 68°F
o Summer: 78°F
Programmable thermostats for ENERGY STAR Homes models assume a setback/setup temperature
difference of 3°F.
Air-conditioning equipment sized to meet peak load in 0.5-ton increments, following the general
sizing parameters of typical split-system air-conditioning systems.
Domestic hot water use will be modeled independently of the DOE-2 model using a procedure from
5
the Gas Appliance Manufacturers’ Association .
Gas/electric homes are equipped with a central air-conditioner with gas furnace. DHW is gas.
4
Typical Meteorological Year (TMY2) weather data, 1961-1990, from the National Renewable Energy
Laboratory, 1995.
5
From the GAMA Directory of Certified Efficiency Ratings for Residential Heating and Water Heating
Equipment. Gas Appliance Manufacturers Association (GAMA), 1996.
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2.7. Prototype Building Characteristics
Table 2.3 summarizes the modeling characteristics for the prototypes to be analyzed, including
the ENERGY STAR home and the MEC baseline home.
Table 2.3. Modeling characteristics
Inputs ENERGY STAR Model Energy Code
Foundation type Slab-on-grade Slab-on-grade
Slab insulation None None
Wall type 2x4 stud 2x4 stud
Wall interior Drywall Drywall
Wall exterior Brick Brick
Wall insulation R-13 Houston: Uwall = 0.211
Dallas: Uwall = 0.183
Amarillo: Uwall = 0.153
Rim joist insul. R-13 (wall+window)
Houston: Uroof = 0.041 (overall)
Ceiling insulation R-30 Dallas: Uroof = 0.037 (overall)
Amarillo: Uroof = 0.034 (overall)
Overhang 1.5 ft. N/A
Window type Dbl-pane low-e/vinyl Dbl-pane clear/alum.
1
%glass/floor All 15% 18%
2
South/West only 9% 9%
Heating Gas 80 AFUE 78 AFUE
Electric 7.2 HSPF 6.8 HSPF
Cooling 12 SEER 10 SEER
Duct insulation R-8 N/A
Duct losses 6% 20%
DHW Gas 0.56 EF 0.54 EF
Electric 0.88 EF 0.86 EF
DHW insulation tank in conditioned space None
Thermostat Programmable Manual
Houston: 0.45 ac/h
3
Infiltration 0.35 ac/h Dallas: 0.50 ac/h
Amarillo: 0.64 ac/h
1
Based upon fenestration area used in HERS rating MEC Reference house.
2
Glazing is distributed equally in all four cardinal directions.
3
MEC standard infiltration of 0.56 ac/h adjusted by a weather factor of 0.81 for Houston, 0.89 for Dallas, and
1.14 for Amarillo.
2.8. Modeling Issues
2.8.1. Demand vs. energy savings
An ENERGY STAR Home is considered to be at least 30% more energy efficient than a
MEC-compliant home, resulting in a HERS rating of at least 86. However, the HERS rating
system only addresses annual energy use, and does not account for changes or reductions in
kW demand. We assume that any demand savings will occur as a result of thermal load
reductions, right-sizing of cooling equipment, and higher-efficiency cooling equipment.
2.9. DOE-2 Outputs
The following outputs have been extracted from the DOE-2 simulation output files:
Total peak kW (May-Sept.)
Total annual kWh
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Cooling peak kW
Cooling annual kWh
Total annual BTUs
Percent of hours load not met by heating/cooling equipment (for diagnostic purposes)
3. Results and Analysis
3.1. Model Validation
In order to validate the MEC baseline home models, the peak cooling demand and annual energy
use of the models were compared to the peak cooling demand and annual energy use illustrated
in the TXU baseline study. Table 3.1 compares the MEC baseline model results to the baseline
study results.
Table 3.1. Comparison of TXU Baseline Study results to MEC Baseline model
Average Annual Energy Use Cooling Demand
Source 2
Area (ft ) kWh/yr
2
kWh/ft /yr peak kW W/ft
2
TXU study 2,426 15,043 5.4 - 6.0 3.8 - 4.3 1.6 - 1.8
MEC model 2,750 17,433 6.3 4.3 1.6
For each of the 99 homes in the TXU baseline study, RLW performed a HERS inspection and
constructed a REM/Rate™ model. The REM/Rate™ models, based on actual newly built homes,
compare closely to the DOE-2 models based on the MEC. Eighty percent of the homes surveyed
by RLW were dual-fuel. On average, these dual-fuel homes are predicted to use between 5.4 and
6.0 kWh/ft2/year, according to the TXU study. The DOE-2 models of the MEC baseline homes in
Dallas predict an average energy use intensity of 6.3 kWh/ ft2/year.
The TXU baseline study also shows that the peak cooling demand intensity of new homes is
between 1.6 and 1.8 W/ft2. The MEC baseline model predicts a peak cooling demand of 1.6 W/ft2.
Since the annual energy use and summer peak demand predicted by the baseline model are
within reasonable agreement with TXU baseline study, we conclude that the study validates the
use of the MEC baseline model. Some reasons for discrepancies between the results include the
use of different modeling software (REM/Rate™ vs. DOE-2.1E), the assumption of different
internal electric loads and schedules in the homes, and the possible use of different weather data
in the models.
3.2. Energy use and peak demand
Having demonstrated the validity of the MEC-based baseline model, we proceed to compare the
modeled MEC Baseline home to the modeled ENERGY STAR home.
Table 3.2 shows the results of the simulations of both MEC baseline homes and ENERGY STAR
Homes.
Table 3.2. Summer demand and annual energy use for baseline and ENERGY STAR Homes models
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MEC Baseline ENERGY STAR
Utility Size category Summer Annual Summer Annual
(floor area, ft2) Peak (kW) Energy Peak (kW) Energy
(kWh) (kWh)
≤1,500 5.0 15,954 3.8 13,535
Reliant/Entergy
1,501 < 3,000 5.7 17,751 4.5 14,914
(Houston) ≥ 3,000 6.5 19,850 5.4 16,433
≤1,500 4.2 14,724 3.3 12,867
TXU Electric
1,501 < 3,000 5.0 16,530 4.2 14,261
(Dallas) ≥ 3,000 6.2 18,335 5.2 15,607
≤1,500 4.6 12,337 3.8 11,435
SPS
1,501 < 3,000 5.9 13,642 4.9 12,447
(Amarillo) ≥ 3,000 7.4 14,755 6.0 13,321
3.3. HERS Ratings
The model runs completed as part of this analysis have been evaluated using the Home Energy
Rating System (HERS). The purpose for this is twofold: to determine the typical energy use of
homes constructed in Houston, Dallas, and Amarillo to comply with the MEC (a rating of 80), and
to assure that the ENERGY STAR ReBOP as modeled achieves the minimum rating of 86
necessary to be considered an ENERGY STAR Home.
Table 3.3 shows the HERS ratings for all prototype models.
Table 3.3. HERS Ratings for baseline and ENERGY STAR Homes models
Utility Size category MEC ENERGY
(floor area, ft2) Baseline STAR
≤1,500 80.0 88.4
Reliant/Entergy 1,501 < 3,000 80.0 87.5
(Houston) ≥ 3,000 80.0 87.3
Average 80.0 87.7
≤1,500 80.0 88.1
TXU Electric 1,501 < 3,000 80.0 87.0
(Dallas) ≥ 3,000 80.0 86.7
Average 80.0 87.2
≤1,500 80.0 87.5
SPS 1,501 < 3,000 80.0 86.6
(Amarillo) ≥ 3,000 80.0 86.3
Average 80.0 86.8
As shown in Table 3.3, the ENERGY STAR models result in average HERS ratings ranging from
86.8 to 87.7. The higher than needed rating for the ENERGY STAR Home models might be
attributed to the reduction of the maximum glazing area from 18% to 15%, and a large reduction in
heating energy use.
An advantage of requiring the use of the ReBOP building characteristics with the 15% glazing limit
is that it may result in a larger than needed rating to qualify for the ENERGY STAR certificate. This
would create a cushion for the homebuilder in obtaining the minimum 86 rating required, in the
case that other factors not accounted for in this analysis would cause a rating penalty.
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3.4. Savings and Incentive calculation
Table 3.4. ENERGY STAR Homes deemed savings values
Size category Demand Energy Incentive
Utility (floor area, ft2) savings savings ($/home)
(kW) (kWh)
≤1,500 1.2 2,419 $ 598
Reliant/Entergy 1,501 < 3,000 1.2 2,837 $ 640
(Houston) ≥ 3,000 1.1 3,417 $ 668
Average 1.2 2,891 $ 635
≤1,500 0.9 1,857 $ 453
TXU Electric 1,501 < 3,000 0.8 2,269 $ 465
(Dallas) ≥ 3,000 1.0 2,728 $ 570
Average 0.9 2,285 $ 496
≤1,500 0.8 902 $ 328
SPS 1,501 < 3,000 1.0 1,195 $ 417
(Amarillo) ≥ 3,000 1.4 1,434 $ 559
Average 1.1 1,177 $ 435
Given the relative magnitude of the savings for the size categories selected, and the minor
differences between them, uniform demand and energy savings and payment values may make
sense. This could simplify administration of the program by eliminating the need to assign
different savings and payments to homes based upon their reported square footage. It would
eliminate the need to verify the square footage of any home in the program, and would allow the
utilities to publish a single, standard incentive payment per home.
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Appendix A: Prototype Model List
Table A.1. summarizes all models run as part of this analysis.
Table A.1. Prototype model list
# Conv. Weather Size Construction Heating DHW
1 HLPE1G Houston 1,250 Energy Star Gas Furnace Gas
2 HLPM1G Houston 1,250 MEC Gas Furnace Gas
3 HLPE2G Houston 2,250 Energy Star Gas Furnace Gas
4 HLPM2G Houston 2,250 MEC Gas Furnace Gas
5 HLPE3G Houston 3,250 Energy Star Gas Furnace Gas
6 HLPM3G Houston 3,250 MEC Gas Furnace Gas
7 TXUE1G Dallas/Ft. Worth 1,250 Energy Star Gas Furnace Gas
8 TXUM1G Dallas/Ft. Worth 1,250 MEC Gas Furnace Gas
9 TXUE2G Dallas/Ft. Worth 2,250 Energy Star Gas Furnace Gas
10 TXUM2G Dallas/Ft. Worth 2,250 MEC Gas Furnace Gas
11 TXUE3G Dallas/Ft. Worth 3,250 Energy Star Gas Furnace Gas
12 TXUM3G Dallas/Ft. Worth 3,250 MEC Gas Furnace Gas
13 SPSE1G Amarillo 1,250 Energy Star Gas Furnace Gas
14 SPSM1G Amarillo 1,250 MEC Gas Furnace Gas
15 SPSE2G Amarillo 2,250 Energy Star Gas Furnace Gas
16 SPSM2G Amarillo 2,250 MEC Gas Furnace Gas
17 SPSE3G Amarillo 3,250 Energy Star Gas Furnace Gas
18 SPSM3G Amarillo 3,250 MEC Gas Furnace Gas
N
House
Front
Garage
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Appendix B: Sample DOE-2 Input Deck
##fileprefix c:\doe21e\inc\
##INCLUDE LE1E.TXT
$ ##SET1 location _______ command inserted into LODPARAM file $
$ ---------------------------Run Control------------------------------- $
DIAGNOSTIC CAUTIONS ..
ABORT ERRORS ..
RUN-PERIOD JAN 1 1995 THRU DEC 31 1995 ..
BUILDING-LOCATION LATITUDE=LATIT
LONGITUDE=LONGIT
TIME-ZONE=TZONE
ALTITUDE=ALTIT
AZIMUTH=AZIM ..
LOADS-REPORT SUMMARY=(LS-A,LS-B,LS-C,LS-D,LS-E)
VERIFICATION=(LV-C,LV-D,LV-E,LV-F,LV-H,LV-I,LV-J) ..
$ ----------------------------Schedules-------------------------------- $
SCH-1 =SCHEDULE THRU DEC 31 (ALL) (1,24) (1) ..
SC-MULT-SCH=SCHEDULE THRU MAR 31 (ALL) (1,24) (1)
THRU SEP 30 (ALL) (1,24) (.78)
THRU DEC 31 (ALL) (1,24) (1) ..
$ ----------------------------Materials-------------------------------- $
WALL-INS-1 =MAT TH=WALLTH1 COND=WALL-K1 DENS=6.89 S-H=.326 ..
WALL-INS-2 =MAT TH=WALLTH2 COND=WALL-K2 DENS=6.89 S-H=.326 ..
BSMT-INS =MAT TH=BSMTTH COND=BSMT-K DENS=6.89 S-H=.326 ..
FLOOR-INS =MAT TH=FLOORTH COND=FLOOR-K DENS=6.89 S-H=.326 ..
CEIL-INS =MAT TH=CEILTH COND=CEIL-K DENS=3.74 S-H=.326 ..
SLAB-INS-1 =MAT TH=SLABTH1 COND=SLAB-K1 DENS=15.0 S-H=.170 ..
SLAB-INS-2 =MAT TH=SLABTH2 COND=SLAB-K2 DENS=15.0 S-H=.170 ..
2X4-AIR =MAT TH=0.292 COND=0.278 DENS=6.08 S-H=.330 ..
2X6-AIR =MAT TH=0.458 COND=0.416 DENS=6.08 S-H=.330 ..
2X10-AIR =MAT TH=0.771 COND=0.761 DENS=3.27 S-H=.330 ..
SOIL-F4 =MAT RES=R-GND-F4 ..
SOIL-W4 =MAT RES=R-GND-W4 ..
SOIL-F7 =MAT RES=R-GND-F7 ..
SOIL-W7 =MAT RES=R-GND-W7 ..
SOIL-SLAB =MAT RES=R-GND-SL ..
$ ------------------------------Layers--------------------------------- $
IN-XW-1 =LAYERS MAT=(AS01,BP01,SHEATH1,WALL-INS-1,GP01) ..
IN-XW-2 =LAYERS MAT=(BK01,AL21,BP01,SHEATH1,WALL-INS-2,GP01) ..
UNIN-RJ-1 =LAYERS MAT=(AS01,BP01,SHEATH1,WD02) ..
IN-RJ-1 =LAYERS MAT=(AS01,BP01,SHEATH1,WD02,RJ-INS) ..
UNIN-XW-1 =LAYERS MAT=(AS01,BP01,SHEATH1,2X4-AIR,GP01) ..
UNIN-XW-2 =LAYERS MAT=(BK01,AL21,BP01,SHEATH1,2X4-AIR,GP01) ..
UNIN-IW-1 =LAYERS MAT=(GP01,2X4-AIR,GP01) ..
IN-IW-1 =LAYERS MAT=(GP01,WALL-INS-1,GP01) ..
UNIN-R-1 =LAYERS MAT=(AR02,BP01,PW03,2X6-AIR) I-F-R=.61 ..
IN-R-1 =LAYERS MAT=(AR02,BP01,PW03,CEIL-INS,GP01) I-F-R=.61 ..
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UNIN-C-1 =LAYERS MAT=(2X6-AIR,GP01) ..
IN-C-1 =LAYERS MAT=(CEIL-INS,GP01) ..
UNIN-F-1 =LAYERS MAT=(CP02,PW03,2X10-AIR,GP01) ..
IN-F-1 =LAYERS MAT=(CP02,PW03,FLOOR-INS,GP01) ..
CONC-XW-1 =LAYERS MAT=(CB11,2X4-AIR,GP01) ..
IN-CONC-XW-0 =LAYERS MAT=(CB11,BSMT-INS,GP01) ..
IN-CONC-XW-4 =LAYERS MAT=(SOIL-W4,CB11,BSMT-INS,GP01) ..
IN-CONC-XW-7 =LAYERS MAT=(SOIL-W7,CB11,BSMT-INS,GP01) ..
CONC-F-G =LAYERS MAT=(SOIL-SLAB,BP03,CC03) ..
UN-CONC-F-1 =LAYERS MAT=(SOIL-SLAB,BP03,CC03,CP02) ..
IN-CONC-F-1 =LAYERS MAT=(SOIL-SLAB,SLAB-INS-1,CC03,CP02) ..
IN-CONC-F-4 =LAYERS MAT=(SOIL-F4,SLAB-INS-2,CC03,CP02) ..
$ --------------------------Constructions------------------------------ $
EXT-WALL-1 =CONS LAYERS=IN-XW-1 ..
EXT-WALL-2 =CONS LAYERS=IN-XW-2 ..
EXT-WALL-G =CONS LAYERS=UNIN-XW-1 ..
EXT-WALL-A =CONS LAYERS=UNIN-XW-1 ..
RIM-JOIST-I =CONS LAYERS=IN-RJ-1 ..
RIM-JOIST-U =CONS LAYERS=UNIN-RJ-1 ..
INT-WALL-I =CONS LAYERS=IN-IW-1 ..
INT-WALL-U =CONS LAYERS=UNIN-IW-1 ..
FLOOR-1 =CONS LAYERS=UNIN-F-1 ..
FLOOR-MB =CONS LAYERS=IN-F-1 ..
SLAB-LR =CONS LAYERS=IN-CONC-F-1 ..
ROOF-1 =CONS LAYERS=UNIN-R-1 ..
CEILING-1 =CONS LAYERS=IN-C-1 ..
CEILING-G =CONS LAYERS=UNIN-C-1 ..
BSMT-WALL-0 =CONS LAYERS=IN-CONC-XW-0 ..
BSMT-WALL-4 =CONS LAYERS=IN-CONC-XW-4 ..
BSMT-WALL-7 =CONS LAYERS=IN-CONC-XW-7 ..
BSMT-SLAB-I =CONS LAYERS=IN-CONC-F-1 ..
BSMT-SLAB-U =CONS LAYERS=UN-CONC-F-1 ..
GRG-SLAB-1 =CONS LAYERS=CONC-F-G ..
DOOR-1 =CONS U=UDOOR ABS=.70 ..
WIN-MEC =GLASS-TYPE PANES=PANENO S-C=MECSC G-C=G-COND-M
F-C=F-COND-M S-T-C=4 ..
WIN-LIB =GLASS-TYPE GLASS-TYPE-CODE=WINCODE
SPACER-TYPE-CODE=0
FRAME-CONDUCTANCE=F-COND-L ..
DIAGNOSTIC COMMENTS ..
DIAGNOSTIC CAUTIONS ..
$ --------------------------Space Description-------------------------- $
SET-DEFAULT FOR EXTERIOR-WALL HEIGHT=WALLHGT CONS=EXT-WALL-1 ..
SET-DEFAULT FOR WINDOW HEIGHT=WINHGT
FRAME-WIDTH=FRAMEWTH
X=1 Y=1
GLASS-TYPE=WIN-TYPE
SHADING-SCHEDULE=SC-MULT-SCH ..
SET-DEFAULT FOR DOOR HEIGHT=7.0 CONSTRUCTION=DOOR-1 ..
HOUSE =SPACE AREA=HOUSEAREA
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VOLUME=HOUSEVOL
TEMPERATURE=(73)
SOURCE-SCHEDULE=SCH-1
SOURCE-TYPE=ELECTRIC
SOURCE-BTU/HR=3600 $ind source loads would be nice
SOURCE-SENSIBLE=.833
SOURCE-LATENT=.167
FLOOR-WEIGHT=11.5
INF-METHOD=AIR-CHANGE
AIR-CHANGES/HR=INFILRATE ..
FRONT-WALL-1 =EXTERIOR-WALL W=FXWALL AZ=0 ..
FRONT-WIN-1 =WINDOW W=FWIN ..
FRONT-DOOR-1 =DOOR W=FDOOR ..
FRONT-WALL-G =INTERIOR-WALL CONS=INT-WALL-I AREA=FIWALLG AZ=0
NEXT-TO GARAGE ..
FRONT-WALL-A =INTERIOR-WALL CONS=INT-WALL-I AREA=FIWALLA AZ=0
NEXT-TO ATTIC ..
FRONT-RJ-1 =EXTERIOR-WALL W=FXWALL H=RJHGT CONS=WHICH-RJ AZ=0 ..
BACK-WALL-1 =EXTERIOR-WALL W=BXWALL AZ=180 ..
BACK-WIN-1 =WINDOW W=BWIN ..
BACK-DOOR-1 =DOOR W=BDOOR ..
BACK-RJ-1 =EXTERIOR-WALL W=BXWALL H=RJHGT CONS=WHICH-RJ AZ=180 ..
RIGHT-WALL-1 =EXTERIOR-WALL W=RXWALL AZ=270 ..
RIGHT-WIN-1 =WINDOW W=RWIN ..
RIGHT-WALL-G =INTERIOR-WALL CONS=INT-WALL-I AREA=RIWALLG AZ=90
NEXT-TO GARAGE ..
RIGHT-RJ-1 =EXTERIOR-WALL W=RXWALL H=RJHGT CONS=WHICH-RJ AZ=270 ..
LEFT-WALL-1 =EXTERIOR-WALL W=LXWALL AZ=90 ..
LEFT-WIN-1 =WINDOW W=LWIN ..
LEFT-RJ-1 =EXTERIOR-WALL W=LXWALL H=RJHGT CONS=WHICH-RJ AZ=90 ..
LEFT-WALL-A =INTERIOR-WALL CONS=INT-WALL-I AREA=LIWALLA AZ=90
NEXT-TO ATTIC ..
1ST-FLOOR =UNDERGROUND-FLOOR CONS=ISSLABINS AREA=1FLAREA TILT=180
..
2ND-CLG =INTERIOR-WALL CONS=CEILING-1 AREA=ATT1AREA TILT=0
NEXT-TO ATTIC ..
GARAGE =SPACE AREA=GRGAREA
VOLUME=GRGVOL
INF-METHOD=AIR-CHANGE
AIR-CHANGES/HR=2.0
ZONE-TYPE=UNCONDITIONED ..
GAR-WALL-F =EXTERIOR-WALL W=GFWALL AZ=0 CONS=EXT-WALL-G ..
GAR-DOOR-1 =DOOR W=GFDOOR CONS=DOOR-1 ..
GAR-WALL-R =EXTERIOR-WALL W=GRWALL AZ=270 CONS=EXT-WALL-G ..
GAR-WALL-L =EXTERIOR-WALL W=GLWALL AZ=90 CONS=EXT-WALL-G ..
GAR-FLOOR =UNDERGROUND-FLOOR AREA=GRGAREA CONS=GRG-SLAB-1 ..
GAR-CLG =INTERIOR-WALL AREA=GRGCEIL TILT=0 CONS=CEILING-G
NEXT-TO ATTIC ..
ATTIC =SPACE AREA=ATT1AREA
VOLUME=ATT1VOL
INF-METHOD=AIR-CHANGE
AIR-CHANGES/HR=5.0
ZONE-TYPE=UNCONDITIONED ..
FRONT-ROOF-1 =ROOF H=FROOFH W=FROOFW AZ=0
TILT=FROOFT CONS=ROOF-1 ..
BACK-ROOF-1 =ROOF H=BROOFH W=BROOFW AZ=180
TILT=BROOFT CONS=ROOF-1 ..
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RIGHT-ROOF-1 =ROOF H=RROOFH W=RROOFW AZ=270
TILT=RROOFT CONS=ROOF-1 ..
LEFT-ROOF-1 =ROOF H=LROOFH W=LROOFW AZ=90
TILT=LROOFT CONS=ROOF-1 ..
R-ATTIC-WALL =EXTERIOR-WALL H=ATT1RWH W=ATT1RWW AZ=270
CONS=EXT-WALL-A ..
L-ATTIC-WALL =EXTERIOR-WALL H=ATT1LWH W=ATT1LWW AZ=90
CONS=EXT-WALL-A ..
F-ATTIC-WALL =EXTERIOR-WALL H=ATT1FWH W=ATT1FWW AZ=0
CONS=EXT-WALL-A ..
END ..
COMPUTE LOADS ..
SAVE-FILES ..
INPUT SYSTEMS ..
##INCLUDE SE1E.TXT
$ The include file SYSPARAM.INC contains the following $
$ system parameters: $
$ HEATSCH COOLSCH COOLEIR $
$ HEATEIR FURNHIR COOLCAP $
$ DUCTLOSS $
$ and the ##SET1 system ________ command $
$ --------------------------System Schedules--------------------------- $
HEAT-1 =SCHEDULE THRU DEC 31 (ALL) (1,24) (68) ..
COOL-1 =SCHEDULE THRU DEC 31 (ALL) (1,24) (78) ..
HEAT-2 =SCHEDULE THRU DEC 31 (ALL) (1,6) (63)
(7,23) (68)
(24) (63) ..
COOL-2 =SCHEDULE THRU DEC 31 (MON,FRI) (1,8) (78)
(9,12) (81) (13,14) (78)
(15,18) (81) (19,24) (78)
(SAT,SUN) (1,24) (78)
(HOL) (1,24) (81) ..
WINDOWS-OPENABLE = SCHEDULE THRU MAR 31 (ALL) (1,24) (0)
THRU MAY 31 (ALL) (1,24) (1)
THRU AUG 31 (ALL) (1,24) (0)
THRU OCT 31 (ALL) (1,24) (1)
THRU DEC 31 (ALL) (1,24) (0) ..
$ ------------------------------Zone Data------------------------------ $
HOUSE =ZONE DESIGN-HEAT-T=68
DESIGN-COOL-T=78
ZONE-TYPE=CONDITIONED
HEAT-TEMP-SCH=HEATSCH
COOL-TEMP-SCH=COOLSCH ..
GARAGE =ZONE ZONE-TYPE=UNCONDITIONED ..
ATTIC =ZONE ZONE-TYPE=UNCONDITIONED ..
SYSTEM-SCHEDULE = SCHEDULE THRU DEC 31 (ALL) (1,24) (1) ..
##INCLUDE SYSTYPE.INC
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$ The include file SYSTYPE.INC contains the 3 main system types: $
$ A/C with Gas Furnace $
$ Heat Pump with Gas Furnace backup $
$ Heat Pump with Electric Resistance $
$ to be determined by the ##SET1 system command in the SYSPARAM.INC $
$ include file $
ZONE-NAMES=(HOUSE,ATTIC,GARAGE) ..
PLANT-1 = PLANT-ASSIGNMENT SYSTEM-NAMES=(SYS-1) ..
SYSTEMS-REPORT SUMMARY=(SS-A,SS-B,SS-C,SS-H)
VERIFICATION=(SV-A,SV-B) ..
END ..
COMPUTE SYSTEMS ..
INPUT PLANT ..
PLANT-1 = PLANT-ASSIGNMENT ..
PLANT-REPORT SUMMARY=(PS-B,BEPS) ..
END ..
COMPUTE PLANT ..
##INCLUDE 15UTIL.INP
STOP ..
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Appendix C: Sample DOE-2 Parameter Include Files
INPUT LOADS ..
TITLE LINE-1 * *
LINE-2 "*Houston, TX *"
LINE-3 *Reliant Energy <1500 sqft Energy Star *
LINE-4 *1-st Slab HPwElectric Base* ..
PARAMETER
LATIT 29.97 LONGIT 95.35
TZONE 6 ALTIT 100 AZIM 180
WALLTH1 0.292 WALL-K1 0.0280 WALLTH2 0.292
WALL-K2 0.0280 BSMTTH 0.292 BSMT-K 1.000
FLOORTH 0.771 FLOOR-K 0.0432 CEILTH 0.771
CEIL-K 0.0298 SLABTH1 0.010 SLAB-K1 1.000
SLABTH2 0.01 SLAB-K2 1.0000
R-GND-F4 12.267 R-GND-W4 1.192 R-GND-F7 13.840
R-GND-W7 1.643 R-GND-SL 5.429
SHEATH1 PW03 RJ-INS IN13 UDOOR 0.200
PANENO 2 MECSC 0.88 G-COND-M 1.740
F-COND-M 1.740 WINCODE 2611 F-COND-L 0.319
WALLHGT 18 WINHGT 6 FRAMEWTH 0.420
WIN-TYPE WIN-LIB
HOUSEAREA 1250 HOUSEVOL 11250 INFILRATE 0.35
FXWALL 25.8 FWIN 9.4 FDOOR 2.9
FIWALLG 120.000 FIWALLA 0.001 RJHGT 2.0
WHICH-RJ RIM-JOIST-I BXWALL 31.8 BWIN 6.3
BDOOR 0.1 RXWALL 31.8 RWIN 6.3
RIWALLG 0.001 LXWALL 25.8 LWIN 9.4
LIWALLA 0.001 2FLAREA 0.001 FLOVERG 225
ISSLABINS BSMT-SLAB-U
BSMTAREA 0.001 BSMTVOL 0.001 UGBSMTWL 0.001
LAGBWALL 0.001 LBWINW 0.001 LBSMTWINH 2
BAGBWALL 0.001 BBWINW 0.001 RAGBWALL 0.001
FBINTWL 0.001 RBINTWL 0.001
STORAREA 0.001 STORVOL 0.01 UGSTORWL 0.001
FAGSWALL 0.001 RAGSWALL 0.001 LAGSWALL 0.0
BAGSWALL 0.001 1FLAREA 1250.0
GRGAREA 400 GRGVOL 3600 GFWALL 17.778
GFDOOR 16 GRWALL 8.889 GLWALL 17.778
GRGCEIL 175
ATT1AREA 1250 ATT1VOL 4687.5 FROOFH 21.2
FROOFW 35.355 FROOFT 33.7 BROOFH 21.2
BROOFW 35.355 BROOFT 33.7 ATT1RWH 5.893
ATT1RWW 35.355 ATT1LWH 5.893 ATT1LWW 35.355
RROOFH 0.001 RROOFW 0.001 RROOFT 33.7
LROOFH 0.001 LROOFW 0.001 LROOFT 33.7
ATT1FWH 0.001 ATT1FWW 0.001 ..
##SET1 location Houston_TX
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