Question: A hypothetical countercurrent heat exchanger having an infinite heat transfer area is used to cool 10,OOO lbmassh of water entering at 150°F. The coolant is 5,000 lbmass/h of water entering at 100°F.
a) What are the exit temperatures of the streams?
b) What is the rate of heat transferred?
2. A fluid is heated in a heat exchanger by condensing steam. Derive the log mean ?T to use when
Cp = a + bT