A condenser is to be designed to condense 10,000 kg/h of refrigerant 12 (CC12F2) at 37.8oC. A

Question:

A condenser is to be designed to condense 10,000 kg/h of refrigerant 12 (CC12F2) at 37.8oC. A square 25 by 25 array of 12-mm-diameter tubes is to be used, with water flow inside the tubes maintaining the wall temperature at 32.2oC. Calculate the length of the tubes. hfg =130 kJ/kg at 37.8oC.