Question: Q3. A 3 cm DD pipe is to be covered with two layers of insu each having a thickness of 2.5 cm. The average thermal

Q3. A 3 cm DD pipe is to be covered with two layers of insu each having a thickness of 2.5 cm. The average thermal conductivityr of one insulation is ve times that of the other Determine the percentage decrease in heat transfer if the insulating material is next to the pipe than if it is the outer Assume that the outside and inside surface temperatures composite insulation are fixed

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