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E+: Ground Construction Name !

asked 2018-10-24 06:04:03 -0500

taher.ahel gravatar image

updated 2018-10-26 11:47:41 -0500

I have a thermal zone in energyplus that has no foundation, slab or basement. Its floor is bare ground...What must I put in Construction Name in BuildingSurface:Detailed? I can't leave it blank :(

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answered 2018-10-24 11:25:35 -0500

updated 2018-10-24 11:26:52 -0500

I would create a Material object that has the same heat transfer properties (density, specific heat, conductivity) as the soil for your location, then set the thickness to be small (~1") so that EnergyPlus doesn't calculate much heat storage within this artificial soil layer. Then, create a Construction object that references only the name of this artificial soil layer. Finally, reference the name of this Construction object in the BuildingSurface:Detailed object that represents your zone's floor surface.

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I did it, But it didn't work. I have simple glassed closed zone with no infiltration or ventilation. So it should be a furnace at noon! but the zone temperature is less than environment ! when I change the floor material I reach the zone high temperature.

here is my model: My Model

taher.ahel gravatar imagetaher.ahel ( 2018-10-25 03:08:09 -0500 )edit

Thank you. I did it as you proposed it to me and it worked. I set Outside boundry condition ==> Foundation and I added a new Foundation:Kiva object and SurfaceProperty:ExposedFoundationPerimeter object in order to model ground temperature. then the answer is accurate.

taher.ahel gravatar imagetaher.ahel ( 2018-10-26 11:41:34 -0500 )edit

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Asked: 2018-10-24 06:04:03 -0500

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Last updated: Oct 24 '18