During a visit to a plastic sheet factory, it is observed that a section of 45 mlength of a steam pipe, with a nominal diameter of 2 inches (6.03 cm in diameter)Outdoor plant) extends from one end of the plant to the other without any insulation. TheTemperature measurements at various points on the tube surface gave an average value170 °C, while the surrounding air temperature is 20 °C. The outer surfaceof the pipe is oxidized and its emissivity is 0.7 on average with a temperature of thearound 22 °C. Calculate the following:(a) The coefficient of convective heat transfer for the air surrounding the pipe.b) The amount of heat lost by convection and radiationc) The amount of energy that is lost in a full day, assuming conditions ofconstant temperature.

During a visit to a plastic sheet factory, it is observed that a section of 45 mlength of a steam pipe, with a nominal diameter of 2 inches (6.03 cm in diameter)Outdoor plant) extends from one end of the plant to the other without any insulation. TheTemperature measurements at various points on the tube surface gave an average value170 °C, while the surrounding air temperature is 20 °C. The outer surfaceof the pipe is oxidized and its emissivity is 0.7 on average with a temperature of thearound 22 °C. Calculate the following:(a) The coefficient of convective heat transfer for the air surrounding the pipe.b) The amount of heat lost by convection and radiationc) The amount of energy that is lost in a full day, assuming conditions ofconstant temperature.

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 7.16P

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