Can energy plus simulate AHU / DOAS units that incorporate dual enthalpy wheels or series energy recovery? I typically encounter it in dehumidification applications in an effort to reduce reheat loads. Here's a link to some manufacturer application examples with schematics.
The answer is Yes. Why not try? You can model it in a few minutes.
I just added two HeatExchanger:AirToAir:SensibleAndLatent objects before OutdoorAir:Mixer to an ExampleFile 5ZoneWarmest.idf. No coil is added between the HEXs, but you can do so.
5ZoneWarmest_2HEXs.idf (V23-2-0)
BTW, I haven't seen two Enthalpy Wheels system at least in East Asia. Desiccant Wheel (HeatExchanger:Desiccant:BalancedFlow) or Desiccant Wheel + Sensible/Enthalpy Wheel is often used for efficient dehumidification.
Thanks Keigo! I'm a design builder user and I think that feature is locked out.
That's my issue too. DB is only on E+ 9.4 and you're limited by the functionality of that front end. I wasn't able to confirm if newer versions of E+ can do this. I don't know the E+ language well enough to be "trying this out" in an idf editor directly.
I don't think you can add dual enthalpy wheels, but you could simply use the manufacturers reported overall effectiveness and enter those values.
I use https://bigladdersoftware.com/epx/doc... for dehumidification reheat.
Asked: 2023-02-14 14:55:00 -0600
Seen: 230 times
Last updated: Dec 11 '23
