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Design Builder AirCooled Chiller with CelDek Pad using AHU condensate.

I have to model AirCooled Chiller which will use AHU condensate water to cool ambient air using CelDek Pad as a precooling strategy to increase Chiller efficiency. How i can model this in Design Builder/Energy Plus.

Maaz Akbar's avatar
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Maaz Akbar
asked 2019-01-17 02:58:52 -0500
shorowit's avatar
11.8k
shorowit
updated 2019-01-17 09:41:13 -0500
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The simplest approach would be to set the Chiller:Electric:EIR Condenser Type to EvaporativelyCooledand adjust the total water use with a side calculation.

The more detailed approach would be to connect the chiller Condenser Inlet Node Name to the evaporative cooler outlet node, but I do not know if this less common type of connection can be done with DesignBuilder. If you were to construct this in idf outside the interface, you may need to create a dummy zone to receive the air from the evaporative cooler and use a zone exhaust node to feed the chiller condenser air inlet. Current EnergyPlus (v9.0 and some versions before) allows an air loop with no return path.

MJWitte's avatar
9.7k
MJWitte
answered 2019-01-18 09:07:04 -0500
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