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[EnergyPlus_Support] LowTemperatureRadiant not heating in the presence of pipes [6 Attachments]





Dear all,

I have a very simple one-zone model with floor heating modelled with a ZoneHVAC:LowTemperatureRadiant:VariableFlow object. 

When I add two Pipe:Indoor objects on the branch with this object, no heating happens.

When I do not model pipes, everything seems fine.

Also, if I use a baseboard heater instead of the LowTemperatureRadiant, the zone gets correctly heated.

Attached are the corresponding three .idf and resulting simulated temperatures for 6 months.

Do you know what could be wrong?

Best regards,

Robert




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Posted by: robertogrilloait@xxxxxxxxx


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D:\Eudora\Attach\oneZoneBuilding_lowTemp_withoutPipes.idf
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D:\Eudora\Attach\temperatures_lowTemperatureWithoutPipes.jpg
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D:\Eudora\Attach\oneZoneBuilding_lowTemp_withPipes.idf
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D:\Eudora\Attach\temperatures_lowTemperatureWithPipes.jpg
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D:\Eudora\Attach\oneZoneBuilding_radiator_withPipes.idf
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D:\Eudora\Attach\temperatures_radiatorWithPipes.jpg