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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.

Sep 13 2014, 00:15 -To- Sep 14 2014, 00:00 EST

Total Electric Energy Use

Peak kW

kWatt-hrs
Consumption from utility 4.4 31.8
PV production 3.8 28.9
Fed back to Utility 2.8 17.2
PV used by house 2.0 11.6
Net purchased electricity 4.4 2.9

Selected Electric Energy End Use

Peak kW

kWatt-hrs
A/C Condenser 0.0 0.0
Air Handler 0.3 2.1
Mini-split Heat Pump 0.5 10.1
Kitchen Refrigerator 0.6 2.4
Garage Refrigerator 0.6 4.8
Whole House Fan 0.1 0.7
Lighting, plug loads and other 3.7 7.9
Plug-in Hybrid Automobile Charge 1.4 3.8

Gas Consumption (ft3)

Avg

Total
Instantaneous DHW 0.0 0.0
Clothes Dryer 0.0 0.0
Range/Oven 0.0 0.2
Furnace 0.0 0.0

Indoor Conditions

Avg

Min/Max
Thermostat Temp (F) 81.2 80.5/ 82.1
Thermostat RH (%) 42.0 39.0/ 43.9
Tile Floor Temp (F) 74.8 73.7/ 75.4

Weather Conditions & Other

Avg/Total

Min/Max
Ambient Temp (F) 87.2 82.9/ 92.2
Ambient RH (%) 70.5 69.9/ 71.1
Horz. Plane Irradiation (wh/m2) 7.1 0.0/ 2.4
PV Plane Irradiation (wh/m2) 6274.9 0.0/ 859.7
Ground Temp @ 1ft (F) 87.8 87.4/ 89.4
Garage Temp (F) 83.7 79.6/ 89.6
Attic Temp (F) 88.7 79.3/ 103.3
Hot Water Consumed (Gal) 21.2 0.0/ 3.8
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