Determine the thickness of fiber glass insulation

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Reference no: EM132038738

Question - Hot water at 110^oC flows in a cast iron pipe (k 52 W/m · ^oC) whose inner radius is 2.0 cm and thickness is 0.3 cm. The pipe is to be covered with adequate insulation so that the temperature of the outer surface of the insulation does not exceed 30°C when the ambient temperature is 22^oC. Taking the heat transfer coefficients inside and outside the pipe to be hi 80 W/m2 · ^oC and ho 22 W/m2 · ^oC, respectively, determine the thickness of fiber glass insulation (k 0.038 W/m · ^oC) that needs to be installed on the pipe.

Reference no: EM132038738

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