How to connect an unglazed transpired collector to domestic hot water system?

asked 2017-10-23 02:51:34 -0500

Carlos2
21 ●2

updated 2017-10-23 10:01:17 -0500

__AmirRoth__

4436 ●5 ●17 http://bleedinggreenna...

Hi, I'm simulating a building that has an unglazed transpired collector. In practice, the extra heat might be used for the domestic hot water network and save energy in that area. As it seems currently defined, the unglazed transpired collector object of Energyplus only feeds air loops. I might be missing something, as I have modelled those collectors only a few times. How one is able to connect the water loop with the air loops?

Thanks for your answer!

answered 2017-10-26 10:52:31 -0500

MJWitte

9670 ●6 ●10 http://www.gard.com/

Coil:Water:Cooling can be used to move heat from an air stream to a water loop. You could put the coil (and controller) in the OA system after the transpired collector. It may take some trial and error to get the loops and controls working for this application. One approch would be to add separate plant loop with this coil on the demand side and a HeatExchanger:FluidToFluid on the supply side. The other side of the heat exchanger could replace the demand side outlet pipe in the domestic hot water loop after the WaterUse:Connections object(s) or go in series after the pump on the supply side of that loop - not sure which will work better. Note that the water leaving a WaterUse:Connection object in a plant loop is at the mains temperature.