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Re: [TRNSYS-users] Nigh time spray radiant cooling

Patrick,
  I would think that the correct way of going about it (in TRNSYS) would be to write a model of the wetted outermost layer of the roof to take into account the evaporation, convection, and radiation that occurs at all times (night or day) and then couple it to a BOUNDARY wall (that models the remaining roof layers) . We've used the concept in the past to model PCM wall materials and to model ground coupling.
Best,
 David
 

Patrick Wilkinson wrote:

Has anyone modeled a nighttime radiation cooling system, where the water is sprayed directly on the rooftop of the building, not through tubing/flat plate collectors? If so, any ideas on how to model this in TRNSYS/Excel?

 

Any information on the theoretical background would also help. I can only seem to find information regarding closed systems.

 

thanks

Patrick Wilkinson, P.E., LEED® AP
Advanced Technology Group

 


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