A properly sized dx cooling system will dehumidify air passing through it because the coil is typically very cold. The only way not to dehumidify is to use a
system with a higher coil temperature, a typical building problem I often investigate and repair. Not sure why you don’t want dehumidification, but if you are serious, you will have to have a humidifier in the system to maintain humidity levels.
Ned Lyon, P.E. (MA, WV)
Staff Consultant
SIMPSON GUMPERTZ & HEGER
781.907.9000 main
781.907.9350 direct
617.285.2162 mobile
781.907.9009 fax
www.sgh.com
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From: EnergyPlus_Support@xxxxxxxxxxxxxxx [mailto:EnergyPlus_Support@xxxxxxxxxxxxxxx]
Sent: Wednesday, November 15, 2017 11:09 AM
To: EnergyPlus_Support@xxxxxxxxxxxxxxx
Subject: [EnergyPlus_Support] drop in absolute humidity when using HVAC:Template:Zone:PTAC
Hi everyone!
I'm simulating an existing building with a simple cooling split unit, using the HVAC:Template:Zone:PTAC with a SingleSpeedDX with no additional dehumidification.
However, when I look at the result the absolute humidity drops about 10g/m3. Does anyone know why is that? or how can I avoid that?
Thank you!
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Posted by: "Edward G. Lyon" <EGLyon@xxxxxxx>
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