[bldg-sim] Radiant Heating/Cooling

[Edward F. Sowell]

No offense intended, Peter. If you read my statement carefully
you will see some hedging in it. I was remembering back to
when I wrote a proposal to do a study for the ASHRAE radiant
heating TC. I was selected to do the work, but then decided to
decline after some of the TC members began telling me what
the study should reveal. Who knows what I may
have found... probably like Rick, "it depends."

But I wish you the best in your efforts.

Ed Sowell 



> 
> I do not fully agree with this statement. I have been using 
> radiant systems in buildings for more than 20 years and with the 
> correct application the energy comsumption compared to a 
> traditional system, say overhead VAV can vary from 15% to 30% 
> savings. At present, here in California project such as The Water 
> and Life Museum, Los Angeles Valley College, Westminster Cultural 
> Center and the Childrens Museum of Los Angeles are all showing 
> substantial savings when integrating radiant systems into the 
> designs (compared to an overhead VAV system. Most of these 
> designs are primarily cooling dominated and that probably makes 
> this statement very suprising and of course I am bias. I have 
> published several ASHRAE papers on the potential savings and 
> increased comfort of radiant systems. Another little project I 
> forgot to mention was the Bangkok airport project which will have 
> about 270,000 m2 of radinat cooled floor and the predicted energy 
> savings were in the order of 40%.
> I dont think this forum is a place to say mine is bigger than 
> yours, but Rick Strand and David Sheatzle have been very 
> progressive in trying to get a radiant model in energyplus. A 
> model that works and one that can be applied by enginerrs 
> designing real buildings.
> 
>
> 

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