In a tubular heat exchanger with two shell passes and eight tube passes, 100,000 lb/h of water are heated in the shell from 180 to 300?F. Hot exhaust gases having roughly the same physical properties as air enter the tubes at 650?F and leave at 350?F. The total surface, based on the outer tube surface, is 10,000 sq ft. Determine(a) The log-mean temperature difference if the heat exchanger were simple counterflow type,(b) The correction factor F for the actual arrangement,(c) The effectiveness of the heat exchanger,(d) The average overall heat transfer coefficient.GIVENA tubular heat exchanger with 2 shell passes and 8 tube passesWater in the shell, exhaust gases in the tubesExhaust gases have roughly the same physical properties as airWater flow rate (mw) = 100,000 lb/hWater temperaturesTw,in = 180?FTw,out = 300?FExhaust temperaturesTe,in = 650?FTe,out = 350?FSurface are (A) = 10,000ft2

Transcribed Image Text:

Water m- 100,000 Ibih Twln = 180°F Te,out = 350°F Exhaust Gases Te,in = 650°F Tuout - 300°F