| Title |
Comparison of Building Envelope Simulation Results between EnergyPlus and eQuest for a Small Sized Office Building |
| Authors |
Na, Jung-Wook ; Park, Doo-Yong ; Kim, Kang-Soo |
| DOI |
http://dxdoiorg/105659/JAIK_PD2015316175 |
| Keywords |
Energyplus ; eQuest ; Algorithm ; Small Sized Office Building ; Case600 |
| Abstract |
The purpose of this study is to compare two building energy simulation programs'(EnergyPlus and eQuest) heating/cooling load, and to find the differences by analyzing algorithm, input method and default input parameters based on the ASHRAE Standard 140-Case600 EnergyPlus calculates the inside surface temperatures by solving the heat balance, but eQuest assumes that the inside surface temperature of a thermal zone is equal to the zone air temperature This result in zone air temperature difference(116 ℃ average) is due to occurred load differences Change of U-value of vertical surface causes as 7∼8 % of the heating load difference and 25∼26 % of the cooling load difference The result of changed SHGC is similar But the result from infiltration shows a little different tendency(The heating load differences decrease from 7 % to -16 % and cooling load differences increase from -26 % to -19 %) All of these differences are caused by algorithm discrepancies of convection coefficients, actual air change rate and solar transmittance |