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.
Elements Of Electromagnetics
7th Edition
ISBN:9780190698614
Author:Sadiku, Matthew N. O.
Publisher:Sadiku, Matthew N. O.
ChapterMA: Math Assessment
Section: Chapter Questions
Problem 1.1MA
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Transcribed Image Text: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.
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