23–74C Consider a heat exchanger in which both fluids havethe same specific heats but different mass flow rates. Whichfluid will experience a larger temperature change: the one withthe lower or higher mass flow rate?23–75C Explain how the maximum possible heat transferrate Qmax in a heat exchanger can be determined when the massflow rates, specific heats, and the inlet temperatures of the twofluids are specified. Does the value of Qmax depend on the typeof the heat exchanger?

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23–74C Consider a heat exchanger in which both fluids have the same specific heats but different mass flow rates. Which fluid will experience a larger temperature change: the one with the lower or higher mass flow rate?

23–74C Consider a heat exchanger in which both fluids have the same specific heats but different mass flow rates. Which fluid will experience a larger temperature change: the one with the lower or higher mass flow rate?

Principles of Heat Transfer (Activate Learning with these NEW titles from Engineering!)

8th Edition

ISBN:9781305387102

Author:Kreith, Frank; Manglik, Raj M.

Publisher:Kreith, Frank; Manglik, Raj M.

Chapter7: Forced Convection Inside Tubes And Ducts

Section: Chapter Questions

Problem 7.46P

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Concept explainers

Mechanisms of heat transfer

Heat transfer is an essential discipline in thermal engineering that deals with the transfer, conversion, usability, and creation of heat or thermal energy. Transfer of heat occurs through various mechanisms like conduction, convection, radiation, and change of phases. All these mechanisms have distinct characteristics, but these mechanisms can simultaneously occur in an identical system.

Question

23–74C Consider a heat exchanger in which both fluids have
the same specific heats but different mass flow rates. Which
fluid will experience a larger temperature change: the one with
the lower or higher mass flow rate?
23–75C Explain how the maximum possible heat transfer
rate Qmax in a heat exchanger can be determined when the mass
flow rates, specific heats, and the inlet temperatures of the two
fluids are specified. Does the value of Qmax depend on the type
of the heat exchanger?

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