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Active layer in wall

asked 2019-12-03 06:45:21 -0500

arnespandau gravatar image

updated 2020-01-07 17:03:27 -0500

Is it possible to create an active layer inside a wall, like in TRNSYS? In TRNSYS you just specify some parameters like:

  • specific heat coefficient of water
  • pipe spacing (center to center)
  • pipe outside diameter
  • pipe wallthickness
  • pipe wall conductivity
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What tool are you using? There is likely a tag that you can add for the tool so that others can give better guidance.

Aaron Boranian gravatar imageAaron Boranian ( 2019-12-03 07:10:13 -0500 )edit

I am using the IDF Editor

arnespandau gravatar imagearnespandau ( 2019-12-03 07:25:25 -0500 )edit

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answered 2019-12-03 10:22:29 -0500

It sounds like you are trying to use EnergyPlus. You will have to create your wall construction and specify the parameters for a Construction:InternalSource. Assign the construction you just created to the wall surfaces as required, and then add a ZoneHVAC:LowTemperatureRadiant:VariableFlow or ZoneHVAC:LowTemperatureRadiant:ConstantFlow to the zone where your building is. You can look at an example set-up in the EnergyPlus example files.

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Means I create my wall in "Construction:InternalSource" and add a "ZoneHVAC:LowTemperatureRadiant:ConstantFlow" to the zone and to the surface?

arnespandau gravatar imagearnespandau ( 2019-12-06 06:55:43 -0500 )edit

And do you know how I can create an surface list in the IDF Editor? Cause I have a lot of surfaces, where I have to add the LowTemperatureRadiant system. It would take long if I have to create for each surface a new ZoneHVAC:LowTemperatureRadiant:ConstantFlow - system.

arnespandau gravatar imagearnespandau ( 2019-12-06 07:40:39 -0500 )edit

You add the ZoneHVAC to the zone. And yes, you actually need to specify a ZoneHVAC:LowTemperatureRadiant:SurfaceGroup to the ZoneHVAC if all the surfaces work in paralell. That item is available on the IDF editor.

Luis Lara gravatar imageLuis Lara ( 2019-12-06 09:36:26 -0500 )edit

Thank you Luis.

arnespandau gravatar imagearnespandau ( 2019-12-09 09:27:17 -0500 )edit

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Asked: 2019-12-03 06:45:21 -0500

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Last updated: Dec 03 '19