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Recent content by snowpit

  1. snowpit

    buried pipes heat transfer

    Hi Sterl How did you arrive to those load figures, what method of calculation you used 42 Btu/sq ft. of Concrete Surface on 4" Centers; 47 at 3-1/2" Centers Thanks
  2. snowpit

    buried pipes heat transfer

    buried pipes heat transfer IRstuff (Aerospace) At what air temp and ground temp? The concrete temperature is 25F Air temperature at the surface , 60F, 45F WB Thanks
  3. snowpit

    buried pipes heat transfer

    say we have two buried pipes [1" id poly.} buried in 5" thick concrete floor,supply and return with ethylene glycol 50% circulating inside the pipes at 18F [5 usgpm], the pipes are 1.75" from top of pipe to concetre surface, at 4" on centres btw pipes , my question if we vary the flow and the...
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