Question-and-Answer Resource for the Building Energy Modeling Community
 | 1 | initial version |
I ran your model.
Natural Gas End Use for Water Systems in the html file: 1192GJ
Sum of the Output:Variable "WATER HEATER:Water Heater NaturalGas Energy" in the csv file: 1192GJ
They are the same.
You might be looking at wrong table in the html file or wrong Output:Variable.
Note that your Simulation Settings are ON for both "Run SImulation For Sizing Periods" and "Run Simulation For Weather File Run Periods". You don't need to run simulation for sizing periods if you only want to know the annual simulation result. You might accidentally sum up 8760hours of annual simulation result + (24hours * 7days) of sizing simulation results, but if that's the case, the energy you manually sum up would be slightly larger than the energy shown in the html file.
Anyway, the simulation seems to be running correctly. Please check the result again.
| | 2 | No.2 Revision |
I ran your model.
Natural Gas End Use for Water Systems in the html file: 1192GJ
Sum of the Output:Variable "WATER HEATER:Water Heater NaturalGas Energy" in the csv file: 1192GJ
They are the same.
You might be looking at wrong table in the html file or wrong Output:Variable.
Note that your Simulation Settings are ON for both "Run SImulation For Sizing Periods" and "Run Simulation For Weather File Run Periods". You don't need to run simulation for sizing periods if you only want to know the annual simulation result. You might accidentally sum up 8760hours of annual simulation result + (24hours * 7days) of sizing simulation results, but if that's the case, the energy you manually sum up would be slightly larger than the energy shown in the html file.
Anyway, the simulation seems to be running correctly. Please check the result again.
P.S.
Please also clarify whether you want to know the energy for Service water heating (Domestic hot water) or Space heating. I assumed the former. "Hot Water" in your title could be misleading.
