1. A pipe is covered with three insulation layers 250mm and 300mm and the respective thermal conductivities are 3.2 W/m-C, 2.1 W/m W/m C. The length of the pipe is 3m. The inner side of the pipe which has a diameter of is exposed to a hot gas at 1000 °C with convection coefficient of 50 W/m²°C and the tem of the inner side of the pipe surface is 800 °C. The air outside the pipe is at 25°C with a co coefficient of 35 W/m2°C. a. Draw a schematic diagram which shows the heat transfer process b. Calculate the Heat transfer rate . The overall heat transfer coefficient "U" of the system based on the inner pipe Temperature at each of the layers and at the outermost surface of the nine
1. A pipe is covered with three insulation layers 250mm and 300mm and the respective thermal conductivities are 3.2 W/m-C, 2.1 W/m W/m C. The length of the pipe is 3m. The inner side of the pipe which has a diameter of is exposed to a hot gas at 1000 °C with convection coefficient of 50 W/m²°C and the tem of the inner side of the pipe surface is 800 °C. The air outside the pipe is at 25°C with a co coefficient of 35 W/m2°C. a. Draw a schematic diagram which shows the heat transfer process b. Calculate the Heat transfer rate . The overall heat transfer coefficient "U" of the system based on the inner pipe Temperature at each of the layers and at the outermost surface of the nine
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.
Chapter2: Steady Heat Conduction
Section: Chapter Questions
Problem 2.45P: 2.45 Heat is transferred from water to air through a brass wall . The addition of rectangular brass...
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