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Posted by on April 26, 2007, 7:53 pm
>Excellent thought about this cost problem.
>
>If it wasn't used equipment being relocated I would definitely suggest such
>a design. It sure would save a great deal of $$$$ / labor and high pressure
>permits etc.
Plus unlimited zoning just by adding a couple of common
valves. Meaning most ductwork could be eliminated, saving material
cost, space, labor, balancing issues, etc.
>
>
>>
>> Price of copper makes chillers look attractive ??
>>
>> http://www.chillers.com/TonnageEquations.htm
>>
>> If I put the numbers together right, 1 " PVC lines will carry 10 GPM
>>
>> At a 10 degree delta, that would be 4 ton
>>
>> Piped at ~ $ 0.30 / ft ( assuming sch 40, 450 PSI rating )
>>
>> Maybe use some flexible 3/4 inch polyethylene pipe for zoned small
>> coils at 3/4 ", $ 0.14 / ft ( price from lowes, 100 PSI rating ) ? 5
>> GPM at 10 Delta = 2 tons
>>
>> So, take any resi unit and add a plate-to-plate HX
>> http://www.flatplate.com/pdf/refrig/CHbrochure12-98.pdf
>>
>> Easy control of SHR ( humidity ) via control of CHW supply temp.
>>
>> Add another HX and some of that cheap pipe for DHW re-heat
>>
>>
>> --
>> Click here every day to feed an animal that needs you today !!!
>> http://www.theanimalrescuesite.com/
>>
>> Paul ( pjm @ pobox . com ) - remove spaces to email me
>> 'Some days, it's just not worth chewing through the restraints.'
>> 'With sufficient thrust, pigs fly just fine.'
>> HVAC/R program for Palm PDA's
>> Free demo now available online http://pmilligan.net/palm/
>
--
Click here every day to feed an animal that needs you today !!!
http://www.theanimalrescuesite.com/
Paul ( pjm @ pobox . com ) - remove spaces to email me
'Some days, it's just not worth chewing through the restraints.'
'With sufficient thrust, pigs fly just fine.'
HVAC/R program for Palm PDA's
Free demo now available online http://pmilligan.net/palm/
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