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[EnergyPlus_Support] Autosizing of HVAC
- To: EnergyPlus_Support@xxxxxxxxxxxxxxx
- Subject: [EnergyPlus_Support] Autosizing of HVAC
- From: "evelisedidone" <evelisedidone@xxxxxxxxxxx>
- Date: Mon, 11 Feb 2013 00:30:24 -0000
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Hi!
I get a warning when using the autosizing for a PTHP or Unitary HVAC:
** Warning ** SizeDXCoil: Coil:Cooling:DX:SingleSpeed P01_ZB PTHP COOLING COIL
** ~~~ ** ...Rated Total Cooling Capacity will be limited by the minimum rated volume flow per rated total capacity ratio.
** ~~~ ** ...DX coil volume flow rate (m3/s) = 8.018898E-002
** ~~~ ** ...Requested capacity (W) = 2075.812
** ~~~ ** ...Requested flow/capacity ratio (m3/s/W) = 3.863E-005
** ~~~ ** ...Minimum flow/capacity ratio (m3/s/W) = 4.027E-005
** ~~~ ** ...Adjusted capacity (W) = 1991.283
There seems to be a mismatch between the maximum and minimum capacity of the system and as far as I understand EP chooses the HVAC size based on the minimum flow rate which is not ok for me as I'd like EP to stay with the HVAC based on the maximum demand. Is there any parameter to change this beahviour?
Regards
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