[EnergyPlus_Support] DOE-2 and EnergyPlus calculated different cooling loads for the same building

[Simge Andolsun <simgeandolsun@xxxxxxxxx>]

Please find the attached EnergyPlus(1) and DOE-2(2) files. These two files are supposed to be the DOE-2 and EnergyPlus simulations of the same building. Thus, they are supposed to exhibit the same cooling energy consumptions. The cooling energy consumptions, however, differ. Please find the attached line graph (3) that shows the cooling energy consumption of the building with respect to EnergyPlus and DOE-2 simulations on the peak cooling day (3rd of July). The DOE-2 output exhibited twice of EneryPlus results. Please also find the attached line graphs (4) that show the temperature fluctuations in the interior zones of DOE-2 and EnergyPlus spaces. When compared to EnergyPlus simulation, there was a time-lag in the temperature fluctuations of the DOE-2 interior space. This made us consider FLOOR-WEIGHT factor in DOE-2 as a probable reason. We tried different floor-weight values. This however did not help much. Moreover, the cooling energy graphs (3) showed a very similar
 behavior although the values were very different. This suggested that there might be a single definite reason for the difference in cooling loads calculated by the two programs. With your experience on EnergyPlus, which input would you recommend us to check as the probable reason for the difference in results?
   
  Thanks in advance for your reply,
  ps: If I should upload the attached files, please let me know.
   
  Simge Andolsun 
  Graduate Research Assistant
  Texas A&M University
  Energy Systems Laboratory

       
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