[EnergyPlus_Support] Electric v/s Hot Gas Reheat

["aboyemeplus" <Merid.Aboye@xxxxxxxxxxxxxx>]

Hi All,

I am modeling a unitary system (type:Furnace:BlowThru:HeatCool)with 
the high humidity control activated.
First, I run the model with a Hot Gas Reheat Coil, then with an 
electric reheat coil. The rest of the model remained unchanged. The 
results from the simualtion using the electric reheat coil show that 
zone temperature and humidity are tightly controlled. On the other 
hand, the Hot Gas reheat simulation resulted in significant zone 
temperature deviations from the cooling setpoint (zone is cooled as 
much as 7 oF lower that setpoint temperature, to maintain desired 
max humidity). This, in turn, required a much high system cooling 
capacity. 

Is this real? If not, are there any other aspects of the model that 
need to be modified depending on which reheat coil type is used? 

Also, are there any Unitary System Objects in EnergyPlus that 
support a Draw thru configuartion for cooling and BlowThru for 
heating?

Your help is much appreciated.

Merid 





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