Earth in the Balance
Making Use of the Sun
OM Solar Buildings
Documents
Keeping Water Supply Clean
About Us
HOME > Making Use of the Sun > Computer Simulation > Simulation Result
 Simulation Result

Comparison of Annual Energy Consumption Rates and CO2 Emissions Between

The OM Solar computer simulation program also estimates by what percentage household energy consumption and CO2 output can be reduced using the OM Solar system. "Case studies" are provided below for three different households.

Graph: Comparison of Annual Energy Consumption Rates and CO2 Emissions Between
Other Data on "Case-Study" Households
Location: Tokyo
Number of household members: 4
Total floor area: 1,292ft2 (120m2)
Building standards:
1 Structure meets the Japanese national standard for insulation and airtightness. Thermal transmittance (U-Factor) =0.412Btu/ft2/h/F (2.34W/m2/K).
2 Structure meets the above standard and is equipped with the OM Solar system. Thermal transmittance (U-Factor) =0.359Btu/ft2/h/F (2.04W/m2/K).
3 Structure meets the above standard and is equipped with the OM Solar system and PV panels. (Rated photovoltaic system output is 2.95kW.)
[Basic Conditions for Simulation]
Temperature setting for winter heating (heating the entire house 24 hrs/day): 64.4Fº (18.0Cº)
Temperature setting for summer cooling (cooling the entire house 24 hrs/day): 80.6Fº (27.0Cº)
Assumption for winter heating calculations: Average daily temperatures not exceeding 59.0Fº (15.0Cº)
Assumption for summer cooling calculations: Average daily temperatures exceeding 59.0Fº (15.0Cº)

Figures shown here represent reduction rates in household energy consumption and CO2 emissions for a house equipped with the OM Solar system and PV panels.

Hot water supply:
-137kg-C (-199 liters/kerosene)
-302Ibs-C (-53 gallons/kerosene)
Heating:
- 291kg-C (-422 liters/kerosene)
-642Ibs-C (-111 gallons/kerosene)
Electrical:
-256kg-C (-2,460kWh/electricity)
-565Ibs-C
Cooling:
-25kg-C (-241kWh/electricity)
-55Ibs-C
Note: Reduction rates vary according to local climate/weather conditions and building design.

Back


Back to top