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Yes, we spent many hours modelling radiant systems and
invested a great deal of finance. The results have been somewhat published in
papers by Gaw, Ruess, Holst and Simmonds, also Bjarne Olesen and Meirhans have
published work on active concrete. There are also other publications such as
Markus Kochenz. EMPA were Kochenz used to work has also published data on controlling
radiant floors. Night flushing has also been reported by Braun and Simmonds. Real buildings up and running are Bangkok airport, 199
Fremont in San Francisco, Akron Art Museum, Water and life in Hemet (CA), the
Groninger Museum ( the paper written on this project explains exactly what you
are looking at) and a few more. Good Luck and use TRNSYS. Peter Simmonds Ph.D. Associate IBE Consulting Engineers p: (818) 377-8220 f: (818) 377-8230 m: (818) 219-1284 IDEAS FOR THE BUILT ENVIRONMENT This e-mail message, including any attachments, is for
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contact the sender by reply e-mail and destroy all copies of the original
message. -----Original Message----- I'm looking into improving the overall efficiency of a
radiant cooling system by increasing the slab thickness 1-2 inches
below the tubing and using night cooling to charge the slab.
Currently, we have 5/8" tubing fastened to a layer of insulation on grade and 4"
of concrete poured on top. Ideally, if we can significantly reduce the
need for cooling in the morning for a few hours and even reduce the peak
cooling load at 5pm during the day, then we will definitely look further
into this strategy. Has anyone modeled this or better yet have experience
with this on a project and seen the benefits? Thanks Ian Doebber Graduate Mechanical Engineer Arup tel: 415-946-0292 fax: 415-957-9096 cell: 415-613-4314 ian.doebber@xxxxxxxx www.arup.com ____________________________________________________________ Electronic mail messages entering and leaving
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