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what is the sky view factor for an isolated building? 0?

asked 2021-07-21 20:34:07 -0500

llfan_123's avatar

updated 2021-07-23 15:13:24 -0500

what is the sky view factor for an isolated building? 0? I am using energyplus. But I think the view factor doesn't depend on the tool. Right?

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@llfan_123 what do you mean by "isolated building" (no surrounding buildings, e.g.) Also, what simulation tool are you using? Please mention the tool in the title or body of your post, as well as add a tag for the tool so that others can provide better help.

Aaron Boranian's avatar Aaron Boranian  ( 2021-07-22 08:10:05 -0500 )edit

Please check. Edited.

llfan_123's avatar llfan_123  ( 2021-07-22 11:11:25 -0500 )edit

@llfan_123 thank you for the edit. What do you mean by "isolated building"? Only one building in the entire model?

Aaron Boranian's avatar Aaron Boranian  ( 2021-07-22 12:15:39 -0500 )edit

I used the baseline model in energy plus. It is for isolated buildings with one building in the entire model.

llfan_123's avatar llfan_123  ( 2021-07-22 12:17:10 -0500 )edit

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answered 2021-07-23 00:42:17 -0500

Keigo's avatar

updated 2021-07-23 00:47:42 -0500

My past post might be helpful.

image description

Each external surface has its own sky view factor (Fsky). φ is the tilt angle of the surface. For vertical wall, cosφ=0, and Fsky≈0.354. For horizontal roof, cosφ=1, and Fsky=1.

The relevant part of Engineering Reference is here.

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Asked: 2021-07-21 20:34:07 -0500

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Last updated: Jul 23 '21