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Nodes / Layers of EcoRoof soil

asked 2023-03-14 11:13:24 -0500

Mariha's avatar

updated 2023-03-17 08:57:39 -0500

Hello to all, how many layers or nodes, respectively, does the soil of the EcoRoofModel in EnergyPlus have (for calculation of heat transfer, and output variables, e.g.)? I assume, there are three nodes: Inner surface, outer surface and center? Thanks in advance for any help!

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answered 2023-03-15 20:02:51 -0500

According to the EnergyPlus Engineering Reference Manual section 4.2, a simplified model is used instead of a finite difference model. In this simplified model there are 2 nodes for the heat transfer model: one node at the surface of the soil and the other in the foliage. The moisture balance also uses 2 nodes: one at the surface of the soil and one representing the average soil moisture through the entire soil depth.

Note also that comments in the source code suggest that only 1 ecoroof construction can be employed in a given model. I am not sure if this is still limitation.

Hope this helps!

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Asked: 2023-03-14 11:13:24 -0500

Seen: 45 times

Last updated: Mar 15 '23