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[EnergyPlus_Support] How to model a ventilation system with air heat exchanger
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- Subject: [EnergyPlus_Support] How to model a ventilation system with air heat exchanger
- From: <welma.pereira@xxxxxxxxx>
- Date: 23 Oct 2013 01:24:23 -0700
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- Delivery-date: Wed, 23 Oct 2013 02:24:24 -0600
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Dear All,
I am modeling a house that has a ventilation system with an air heat exchanger. My problem is to find out which EnergyPlus object to use for that. I have tried two options
Option1: model an air loop with an AirLoopHVAC:OutdoorAirSystem object
Option2: use a ZoneHVAC:OutdoorAirUnit object
The problem is that using Option1 I can use a heat exchanger like HeatExchanger:AirToAir:SensibleAndLatent for example but I also need to use an OutdoorAir:Mixer, and that is bad because the incoming air should not be mixed with the return air.
can I use the OutdoorAir:Mixer without mixing the return air?
can I use the AirLoopHVAC:OutdoorAirSystem object without using the OutdoorAir:Mixer?
If I chose Option2 according to the example file OutdoorAirUnit.idf I need to define a fan for each zone which I think does not represent a real system, you would probably have just one fan to ventilate the whole house or not?
My ultimate question is which system is better to represent a ventilation system of a house with an air heat exchanger?
Does anybody have to do that before?
Thanks.
Ann
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