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Summary Report
Indoor T & RH
Outdoor T & RH
HVAC Performance
Electric End-uses
Natural Gas Use
DHW Performance
AC Scatterplot

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"cp1 database

As part of the U.S. DOE Building America program, FSEC and CPS Energy are evaluating the performance of three homes in San Antonio, Texas with identical ~2,000 ft2 floor plans and orientation. One home built to builder standard practice serves as the control (CP1), while the other homes (CP2 & CP3) demonstrate high performance features.

Control Home (CP1) Features:
- 86 HERS Index
- Standard vented attic (R38)
- Frame walls insulated to R-13
- Single pane, clear glass, metal windows
- SEER 14 air conditioner and 80% gas furnace
- Standard gas tank water heater (EF 0.58)
- All other appliances are electric

Apr 10 2011, 00:15 -To- Apr 11 2011, 00:00 EST

Electricity Usage
kWh
KBtu's
Condenser unit 16.6 56.7
Air Handler 10.7 36.4
Range Top 0.0 0.0
Oven 0.1 0.3
Clothes Dryer 3.0 10.2
Total House 38.7 132.1

Interior Conditions
Average
Min/Max
Thermostat Temp (deg.F) 73.4 71.8/ 74.9
Thermostat Humidity (%RH) 49.3 45.9/ 53.1
Vented Attic Temp (deg.F) 86.7 71.8/ 111.4
Vented Attic Humidity (%RH) 49.9 22.3/ 70.6
Water Heater Inlet (deg.F) 79.0 74.0/ 89.7
Water Heater Outlet (deg.F) 115.4 106.6/ 121.6

Hot Water Flow
Tot/Avg
Min/Max
Tank Water Heater - Tot Gal 92.1 0.0/ 17.2
Tank Water Heater - Avg GPM 0.8 0.3/ 2.6

Hot Water Energy
Tot. Btu
Tank WH Gas Use 44880.0
Tank WH Output 30550.0
Tank WH Period Effic. 0.68

Natural Gas Usage
CuFt
Btus
Total House 44.0 44880.0
Furnace 0.0 0.0
Tank Water Heater (estim) 44.0 44880.0
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