[EnergyPlus_Support] boiler:simple

["zhaicq98" <chaoqinz@xxxxxxxxxxxxxx>]

Hi,

The cooling and heating of my building is provided by a fan coil unit 
in each zone and the cooling plant consists of a electric chiller 
while the heating plant consists of a boiler. When I tried to output 
the energy consumption of this system, I got something confusing. 

The theoretical efficiency of my boiler is 0.9 and the fuel use 
coefficents C1, C2 and C3 is 1, 0 and 0 respectively. As I understand 
from the user manual, this kind of input should be modeled as a 
constant efficiency boiler. 

I output the FANCOILHEATINGCOIL:Total Water Heating Coil Energy for 
each fan coil unit and sum them up. I also output the Heating:Gas. I 
expect the latter is the former divided by 0.9, which is my boiler 
efficiency, but it is not. In my output, the latter is the former 
divided by 0.34. I would like to know what is going on here.

Thanks,
Chaoqin





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