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Posted by EDS on February 17, 2008, 3:07 pm
>
>
> EDS wrote:
>
>>>>>
>>>>Neat, I designed a similar solar preheat system for a college field
>>>>house, gymnasium, and 25 meter pool in NH back in 1979, where the HVAC
>>>>supply air is brought through 3 banks of 60' black metal ducting (made
>>>>up of 4" deep galvanized decking). Worked great, with air on a sunny 0
>>>>degree F. day at about 80 degrees F. at the HVAC intake. The lexan
>>>>covers however distorted
>>>>from the heat and had to be replaced with glass. I gave a talk on this
>>>
>>>>project at an environmental conference in Norfolk VA. in 1980. Total
>>>>additional cost was $48 K. for a 60,000 sf facility.
>>>>EDS
>>>>
>>>I'd love to see your paper from the talk.
>>>
>>>
>>
>>Good Lord, 28 years ago. I might have it somewhere in a mouldering box,
>>but the firm I was with then is long gone. Sorry.
>>Funny tale about that building, the ducts came in just over the Athletic
>>Director's office, and he had to work in his shorts to stay cool. Also
>>during the night condensation would freeze in the ducts above his office,
>>when the sun came up it would unfreeze and drip onto his desk. Only leaked
>>on sunny days ;-) We were able to fix both problems with some insulation.
>>The building had a field house that held 3500 spectators, another full
>>gym, 3 squash courts, offices, a 25 meter 6 lane pool w/ 3 meter board,
>>and appropriate lockers, showers, etc. Walls were prefinished aluminum
>>insulated panels. Pool was all cedar clapboards inside with 5' gluelam
>>beams. Heat was required only on cloudy days and at night when
>>temperatures dropped below freezing as we did not have a heat storage
>>system. Somewhere I've some negatives of it. Have to digitize them.
>>
>
> It seems like the materials used would have cut down on potential mold
> issues and still withstand a pretty huge temperature range. Do you
> remember what you used for insulation?
>
>>EDS
>>
>>
I think it was iso, but possibly Styrofoam
EDS
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