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SurfaceControl: Movable Insulation vs Construction Properties @ EnergyPlus

Hi everyone.

I am trying to assess the performance of dynamic insulation materials, and to do so I am now using the class list SurfaceControl:MovableInsulation. In this class list, we can add or remove a certain layer of material, on the inside and/or outside of a specific opaque surface. To do so, you have to define a fractional schedule (between 0.0-1.0) that represents a fractional modifier on the thermal resistance of the material layer that you're studying (which allows to change its thermal conductivity) In order to establish a starting point (reference) to the analysis that I have been doing, I started with the case where the insulation layer is set ON. To do so, I thought it would be the same to set the material as a layer on the Construction Class List or to set it Always ON on the SurfaceControl:MovableInsulation Class List. But when I calculated the heating and cooling demand, the values were a bit different:

  • Heating for the MovableInsulation Classlist: 3.1 MWh
  • Heating demand, only putting the layer of insulation on the Construction Class List = 1.9 MWh

Does anyone knows the reason for that?

Thank you in advance!

SurfaceControl: Movable Insulation vs Construction Properties @ EnergyPlus

Hi everyone.

I am trying to assess the performance of dynamic insulation materials, and to do so I am now using the class list SurfaceControl:MovableInsulation. In this class list, we can add or remove a certain layer of material, on the inside and/or outside of a specific opaque surface. To do so, you have to define a fractional schedule (between 0.0-1.0) that represents a fractional modifier on the thermal resistance of the material layer that you're studying (which allows to change its thermal conductivity) In order to establish a starting point (reference) to the analysis that I have been doing, I started with the case where the insulation layer is set ON. To do so, I thought it would be the same to set the material as a layer on the Construction Class List or to set it Always ON on the SurfaceControl:MovableInsulation Class List. But when I calculated the heating and cooling demand, the values were a bit different:

  • Heating for the MovableInsulation Classlist: 3.1 MWh
  • Heating demand, only putting the layer of insulation on the Construction Class List = 1.9 MWh

Does anyone knows the reason for that?

Thank you in advance!

SurfaceControl: Movable Insulation vs Construction Properties @ EnergyPlus

Hi everyone.

I am trying to assess the performance of dynamic insulation materials, and to do so I am now using the class list SurfaceControl:MovableInsulation. In this class list, we can add or remove a certain layer of material, on the inside and/or outside of a specific opaque surface. To do so, you have to define a fractional schedule (between 0.0-1.0) that represents a fractional modifier on the thermal resistance of the material layer that you're studying (which allows to change its thermal conductivity) In order to establish a starting point (reference) to the analysis that I have been doing, I started with the case where the insulation layer is set ON. To do so, I thought it would be the same to set the material as a layer on the Construction Class List or to set it Always ON on the SurfaceControl:MovableInsulation Class List. But when I calculated the heating and cooling demand, the values were a bit different:

  • Heating for the MovableInsulation Classlist: 3.1 MWh
  • Heating demand, only putting the layer of insulation on the Construction Class List = 1.9 MWh

Does anyone knows the reason for that?

Thank you in advance!

SurfaceControl: Movable Insulation vs Construction Properties @ EnergyPlus

Hi everyone.

I am trying to assess the performance of dynamic insulation materials, and to do so I am now using the class list SurfaceControl:MovableInsulation. In this class list, we can add or remove a certain layer of material, on the inside and/or outside of a specific opaque surface. To do so, you have to define a fractional schedule (between 0.0-1.0) that represents a fractional modifier on the thermal resistance of the material layer that you're studying (which allows to change its thermal conductivity) In order to establish a starting point (reference) to the analysis that I have been doing, I started with the case where the insulation layer is set ON. To do so, I thought it would be the same to set the material as a layer on the Construction Class List or to set it Always ON on the SurfaceControl:MovableInsulation Class List. But when I calculated the heating and cooling demand, the values were a bit different:

  • Heating for the MovableInsulation Classlist: 3.1 MWh
  • Heating demand, only putting the layer of insulation on the Construction Class List = 1.9 MWh

Does anyone knows the reason for that?

Thank you in advance!