Re: [EnergyPlus_Support] ground loop heat exchanger

["Michael J. Witte" <mjwitte@xxxxxxxx>]

This type of situation, where direct coupling is required, is 
intended to be handled with the free cooling heat exchanger. The 
FreeCoolingChiller.idf example file currently has a chiller and 
cooling tower but it should be possible to use any similar plant and 
condenser equipment. Running the radiant panel on the condenser loop 
is not a problem. Switching between direct coupling and heat pump is 
more difficult.  If you plan to use the heat pump only for heating 
and the direct heat exchanger only for cooling, then you should have 
no problem hooking up the cooling side of the hydronic panel or fan 
coil to the condenser loop and the heating side to a hot water supply 
loop containing a HEATPUMP:WATERTOWATER HEATING.  

Mike


On 5 May 2003, at 16:55, zhaicq98 wrote:

> I posted this message just now, but it seems it did not appear in the
> newsgroup. Here I am sending it again...
> 
> I read from the manual that the ground loop heat exchanger is part of
> condenser loop in E+. Does it mean the ground loop heat exchanger can
> not be used directly, but have to be used together with heat pump or
> chiller?
> 
> What I am trying to simulate is a system where the cool water from
> ground heat exchanger is used directly in the fan coil unit or radiate
> panel for space cooling in summer. While in winter, the ground heat
> exchanger is used together with a heat pump. The hot water from the
> heat pump is piped into the fan coil unit or radiate panel for space
> heating.
> 
> Can it be done in E+? Thanks
> 
> 
> 
> 
> 
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