Solar radiation heat transfer on building
Solar radiation heat transfer on building
(OP)
I would like your support for the following problem:
My task is to evaluate heat gain from environment to a cooling storage tank in the summertime.
Two questions I have are:
1. Unit area solar radiation. Is there a map or similar to find the max unit area solar radiation at a location? I searched through ASHREA handbook we have and have no luck up to now.
2. Ground temperature. To evaluate heat gain from soil, I used soil temperature same as ambient dry bulb temperature to get the temperature difference(Tsoil-Tproduct). I feel like soil temperature shall be lower than ambient but could not find a concrete reference to justify the exact value.
Any comments or reference recommendations are appreciated. Thanks.





RE: Solar radiation heat transfer on building
Some tabularized data is here:
http://www.nrel.gov/gis/solar.html
RE: Solar radiation heat transfer on building
RE: Solar radiation heat transfer on building
2. The soil temperature varies as a function of depth. The surface usually tracks the ambient temperature, although, clear night sky will generally drive the surface temperature well below the ambient. During the day, you should expect the opposite, i.e., a hotter surface than ambient.
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RE: Solar radiation heat transfer on building
If the tank is above ground in open space then also external radiant barrier film will help.