Hot water vapor flows in parallel over the upper surface of a 1-m-long plate. The velocity of the water vapor is 8 m/s at a temperature of 450°C. A copper-silicon (ASTM B98) bolt is embedded in the plate at mid length. The maximum use temperature for the ASTM B98 copper-silicon bolt is 149°C (ASME Code for Process Piping, ASME B31.3-2014, Table A-2M). To devise a cooling mechanism to keep the bolt from getting above the maximum use temperature, it becomes necessary to determine the local heat flux at the location where the bolt is embedded. If the plate surface is kept at the maximum use temperature of the bolt, what is the local heat flux from the hot water vapor at the location of the bolt? Given that the properties of water vapor at the film temperature of Tf 300°C are (Table A-16) Pr = 0.9401, k = 0.04345 W/m-K, and v= 5.340 x 10-5 m²/s. Water vapor Too = 450°C Bolt T₁ The local heat flux from the water vapor at the location where the bolt is embedded is W/m²

Hot water vapor flows in parallel over the upper surface of a 1-m-long plate. The velocity of the water vapor is 8 m/s at a temperature of 450°C. A copper-silicon (ASTM B98) bolt is embedded in the plate at mid length. The maximum use temperature for the ASTM B98 copper-silicon bolt is 149°C (ASME Code for Process Piping, ASME B31.3-2014, Table A-2M). To devise a cooling mechanism to keep the bolt from getting above the maximum use temperature, it becomes necessary to determine the local heat flux at the location where the bolt is embedded. If the plate surface is kept at the maximum use temperature of the bolt, what is the local heat flux from the hot water vapor at the location of the bolt? Given that the properties of water vapor at the film temperature of Tf 300°C are (Table A-16) Pr = 0.9401, k = 0.04345 W/m-K, and v= 5.340 x 10-5 m²/s. Water vapor Too = 450°C Bolt T₁ The local heat flux from the water vapor at the location where the bolt is embedded is W/m²

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 7.13P

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