[BLDG-SIM] Radiant floor cooling and increased capacity with thicker slab

Peter Simmonds peter.simmonds at ibece.net
Thu Aug 31 07:46:29 PDT 2006


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

14130 Riverside Drive Suite 201

Sherman Oaks, CA 91423

p:   (818) 377-8220

f:    (818) 377-8230

m:  (818) 219-1284

IDEAS FOR THE BUILT ENVIRONMENT

 

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-----Original Message-----
From: BLDG-SIM at GARD.COM [mailto:BLDG-SIM at GARD.COM] On Behalf Of Ian
Doebber
Sent: Friday, August 25, 2006 9:49 AM
To: BLDG-SIM at GARD.COM
Subject: [BLDG-SIM] Radiant floor cooling and increased capacity with
thicker slab

 

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

901 Market Street Suite 260 San Francisco CA 94103

tel: 415-946-0292

fax: 415-957-9096

cell: 415-613-4314

ian.doebber at arup.com

www.arup.com

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