3.1 : Commercial Sector Energy Consumption




3.1.12 Aggregate Commercial Building Component Loads as of 1998 (1)
Load (quads) and Percent of Total Load
Component Heating Cooling
Roof -0.103 12% 0.014 1%
Walls (2) -0.174 21% -0.008 -
Foundation -0.093 11% -0.058 -
Infiltration -0.152 18% -0.041 -
Ventilation -0.129 15% -0.045 -
Windows (conduction) -0.188 22% -0.085 -
Windows (solar gain) 0.114 - 0.386 32%
Internal Gains    
Lights 0.196 - 0.505 42%
Equipment (electrical) 0.048 - 0.207 17%
Equip. (non-electrical) 0.001 - 0.006 1%
People 0.038 - 0.082 7%
NET Load -0.442 100% 0.963 100%
Note(s): 1) Loads represent the thermal energy losses/gains that, when combined, will be offset by a building's heating/cooling system to maintain a set interior temperature (which equals site energy). 2) Includes common interior walls between buildings.









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