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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.

Mar 02 2015, 00:15 -To- Mar 03 2015, 00:00 EST

Total Electric Energy Use

Peak kW

kWatt-hrs
Consumption from utility 2.5 22.0
PV production 4.3 28.4
Fed back to Utility 4.1 22.9
PV used by house 1.7 5.5
Net purchased electricity 2.5 -6.4

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 0.2 1.7
Garage Refrigerator 0.6 2.2
Whole House Fan 0.0 0.1
Lighting, plug loads and other 0.6 5.8
Plug-in Hybrid Automobile Charge 1.4 12.3

Gas Consumption (ft3)

Avg

Total
Instantaneous DHW 0.1 1.2
Clothes Dryer 0.0 0.0
Range/Oven 0.0 0.5
Furnace 0.0 0.0

Indoor Conditions

Avg

Min/Max
Thermostat Temp (F) 83.0 74.6/ 188.3
Thermostat RH (%) 71.9 69.5/ 92.3
Tile Floor Temp (F) 103.7 88.3/ 145.6

Weather Conditions & Other

Avg/Total

Min/Max
Ambient Temp (F) 102.4 52.6/ 183.8
Ambient RH (%) 25.6 14.0/ 55.2
Horz. Plane Irradiation (wh/m2) 171.3 0.0/ 116.5
PV Plane Irradiation (wh/m2) 937.8 0.0/ 554.4
Ground Temp @ 1ft (F) 70.8 67.6/ 73.5
Garage Temp (F) 105.6 87.2/ 151.1
Attic Temp (F) 82.2 69.5/ 187.0
Hot Water Consumed (Gal) 36.8 0.0/ 19.1
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