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The steel pipe (100 mm outer diameter) is covered with two layers of insulation. The 40...

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Physics

The steel pipe (100 mm outer diameter) is covered withtwo layers of insulation. The 40 mm thick inner layer has a thermalconductivity of 0.07 W / (mK). Outer layer, 20 mm thick has athermal conductivity of 0.15 W / (m K). The pipe is used to drain500 kPa pressurized steam. The temperature on the outer insulationsurface is 24 ° C. If the pipe is 8 m long, determine thefollowing: (assuming that the conduction heat transfer resistanceof steel pipes and vapor convection resistance is ignored).
a. Heat loss per hour. = kJ / hour.
b. Temperature between insulation layers. = ° C.

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