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[EnergyPlus_Support] Heat recovery warning
- To: EnergyPlus_Support@xxxxxxxxxxxxxxx
- Subject: [EnergyPlus_Support] Heat recovery warning
- From: "johnnyklemke" <johnny.p@xxxxxxxxxxx>
- Date: Fri, 25 Sep 2009 15:17:24 -0000
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- Delivery-date: Fri, 25 Sep 2009 09:18:19 -0600
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Hi all,
I've been running a model with ASHRAE system 8 (VAV with heat recovery) and could not solve a warning with the heat recovery component:
HeatExchanger:AirToAir:SensibleAndLatent "AHU HEAT RECOVERY"
** ~~~ ** Average air volume flow rate is <50% or >130% of the nominal HX supply air volume flow rate.
** ~~~ ** Air volume flow rate ratio = 7.454E-002. Occurrence info=SAO_PAULO/CONGONHAS - BRA TMY3-837800 WMO#=837800, 01/02 06:00 - 06:10
===== Recurring Error Summary =====
************* The following recurring error messages occurred.
*************
************* ** Warning ** HeatExchanger:AirToAir:SensibleAndLatent "AHU HEAT RECOVERY": Average air volume flow rate is <50% or >130% warning continues. Air flow rate ratio statistics follow.
************* ** ~~~ ** This error occurred 999249 times.
************* ** ~~~ ** Max=0.499985 Min=7.383128E-002
Can anyone help me on this? How can I solve this issue? I don't know how to measure this 50/130% of average air volume flow rate.
Thanks,
John
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