Two long cylinders 9.0 cm and 3.7 cm in diameter are completely surrounded by a medium with k -0.9 W/m K. The distance between centers is 12.2 cm, and the cylinders are maintained at 187°C and 43°C. Using conduction shape factors, what is the heat transfer rate per unit length? Express your answer in W/m

Two long cylinders 9.0 cm and 3.7 cm in diameter are completely surrounded by a medium with k -0.9 W/m K. The distance between centers is 12.2 cm, and the cylinders are maintained at 187°C and 43°C. Using conduction shape factors, what is the heat transfer rate per unit length? Express your answer in W/m

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.

Chapter6: Forced Convection Over Exterior Surfaces

Section: Chapter Questions

Problem 6.36P

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3.16 A large, 2.54-cm.-thick copper plate is placed between two air streams. The heat transfer coefficient on one side is and on the other side is . If the temperature of both streams is suddenly changed from 38°C to 93°C, determine how long it takes for the copper plate to reach a temperature of 82°C.
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