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[EnergyPlus_Support] HeatExchanger:AirToAir:SensibleAndLatent

Hello,

I have a problem in simulating the HeatExchanger:AirToAir:SensibleAndLatent, it gives alot of error messages. I run it for one year and got the error occurring 220561 times:

** Warning ** HeatExchanger:AirToAir:SensibleAndLatent "UTAN AIR HEAT RECOVERY":  Average air volume flow rate is <50% or >130% warning continues. Air flow rate ratio statistics follow.
**   This error occurred 220561 total times;
**   during Warmup 0 times;
**   during Sizing 0 times.
**   Max=0.427597  Min=0.411332


This error appeared after I changed the minimum outdoor air schedule in "Controller:OutdoorAir", so that I could save on ventilation. If I put the outdoor air to the maximum it does not give me an error. Also I have to define "Nominal air supply flow rate" on HeatExchanger:AirToAir:SensibleAndLatent, if I put it on "autosize", energy plus crashes.

My file is in the problem submittals folder, link: http://f1.grp.yahoofs.com/v1/kIrTTQYF3aN5F2ZexC57TFWAZ-ctzipu0IJhm3MP6vQAqSvf5Oj6IInJi-rY6pGTKEbRcx_LeKOZZeEJUEAEc2w1GKhKtGECEvb2/_Problem_Submittals/09-aguaRodaTermica.zip

The file is configured to run the hole year, you have to change the simulation control to run the design days.

Thank-you for all your help.
Best Regards





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