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Summary Report
Total Energy Use
Other Use
HVAC System
Interior Conditions
Ambient Conditions
Hybrid Charge
Gas Consumption
Refrigerator(s)
DHW Consumption

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This site monitors a deep retrofit, zero energy home located in Cocoa Beach, Florida. Originally built in 1957, it is a 2000 sqft, four bedroom/two bath home with an office space and Florida room. It is occupied by two adults and two teenagers. Energy consumption is offset by a 4.9 kw photovoltaic system. The home has double pane, low-e vinyl windows (U=0.29, SHGC-0.24). Walls are 8" concrete block with EIFS R-5 exterior wall insulation, R-19 ceiling insulation and a white metal roof. Heating and cooling is provided by an aging 10 SEER, straight cool split system w/gas furnance and supplemented with a centrally located 9,000 Btu/hr SEER 26/HSPF 12 minisplit heat pump. A 20,000 gallon pool is DC pumped by a 450 watt pv array. Additional home features include all tile flooring, CFL lighting, whole house fan ventilation and gas appliances. In late September 2011, a hybrid vehicle was added to the house load. Data collection began in November 2010.

Apr 23 2014, 00:15 -To- Apr 24 2014, 00:00 EST

Total Electric Energy Use

Peak kW

kWatt-hrs
Consumption from utility 3.4 24.8
PV production 4.3 33.0
Fed back to Utility 3.9 27.9
PV used by house 0.9 5.1
Net purchased electricity 3.4 -8.2

Selected Electric Energy End Use

Peak kW

kWatt-hrs
A/C Condenser 0.0 0.0
Air Handler 0.0 0.0
Mini-split Heat Pump 0.0 0.0
Kitchen Refrigerator 0.6 2.2
Garage Refrigerator 0.6 3.6
Whole House Fan 0.1 0.5
Lighting, plug loads and other 1.8 8.8
Plug-in Hybrid Automobile Charge 1.4 9.7

Gas Consumption (ft3)

Avg

Total
Instantaneous DHW 0.1 1.5
Clothes Dryer 0.1 1.8
Range/Oven 0.1 1.2
Furnace 0.0 0.0

Indoor Conditions

Avg

Min/Max
Thermostat Temp (F) 76.0 74.8/ 77.7
Thermostat RH (%) 62.6 58.3/ 67.2
Tile Floor Temp (F) 71.6 70.1/ 72.5

Weather Conditions & Other

Avg/Total

Min/Max
Ambient Temp (F) 73.3 65.9/ 80.6
Ambient RH (%) 70.2 69.4/ 70.4
Horz. Plane Irradiation (wh/m2) 80.0 0.0/ 21.4
PV Plane Irradiation (wh/m2) 6912.5 0.0/ 917.1
Ground Temp @ 1ft (F) 77.8 76.7/ 80.8
Garage Temp (F) 73.9 67.9/ 82.2
Attic Temp (F) 80.0 69.1/ 96.9
Hot Water Consumed (Gal) 44.7 0.0/ 12.9
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