Across-flow exchangerwith both fluids unmixedand an airflow rate of 0.5 kg/s on bothsides. The hot air enters at 350oC while thecool air enters at 20oC. Calculate the exit temperatures for U = 60 W/m2· oC anda total exchanger area of 15 m2.What would be the exittemperatures if the flow rates were cut in half, assuming no change in U? What if the flow rates weredoubled?

Across-flow exchangerwith both fluids unmixedand an airflow rate of 0.5 kg/s on bothsides. The hot air enters at 350oC while thecool air enters at 20oC. Calculate the exit temperatures for U = 60 W/m2· oC anda total exchanger area of 15 m2.What would be the exittemperatures if the flow rates were cut in half, assuming no change in U? What if the flow rates weredoubled?

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 7.14P

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