snowpit
Mechanical
- Mar 22, 2007
- 3
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 centres to 3.5" how this will impact the heat transfer coefficient and proper method of calculation. we are trying to freeze the water sprayed on top of the concrete say 1-1/2" thick ice to make