The upper surface of a 1 mx 1 m ASTM B152 copper plate is being cooled by air at 20°C. The air is flowing parallel over the plate surface at a velocity of 0.1 m/s. The maximum use temperature for the ASTM B152 copper plate is 260°C (ASME Code for Process Piping, ASME B31.3-2014, Table A-1M). Determine the average convection heat transfer rate from the plate surface that is required to keep the plate surface temperature from going higher than the maximum use temperature. It is given that the properties of air at the film temperature of 140°C are (Table A-15) Pr = 0.7041, k = 0.03374 W/m-K, and v= 2.745 x 10-5 m²/s. The average convection heat transfer rate is W.

The upper surface of a 1 mx 1 m ASTM B152 copper plate is being cooled by air at 20°C. The air is flowing parallel over the plate surface at a velocity of 0.1 m/s. The maximum use temperature for the ASTM B152 copper plate is 260°C (ASME Code for Process Piping, ASME B31.3-2014, Table A-1M). Determine the average convection heat transfer rate from the plate surface that is required to keep the plate surface temperature from going higher than the maximum use temperature. It is given that the properties of air at the film temperature of 140°C are (Table A-15) Pr = 0.7041, k = 0.03374 W/m-K, and v= 2.745 x 10-5 m²/s. The average convection heat transfer rate is W.

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 7.4P

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