A steel pipe of 20 mm inner diameter and 2 mm thickness is covered with 20 mm th

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A steel pipe of 20 mm inner diameter and 2 mm thickness is covered with 20 mm thick of fiber glass insulation (k = 0.05 W/m degree). If the inside and outside convective coefficients are 10 W/m² degree and 5 W/m² degree, calculate the overall heat transfer coefficient based on inside diameter of pipe. In the diagram, the diameter of small circle is 20 mm

A Steel Pipe Of 20 Mm Inner Diameter And 2 Mm Thickness Is C...

Options:

A . 1.789 W/m² degree

B . 2.789 W/m² degree

C . 3.789 W/m² degree

D . 4.789 W/m² degree

Answer: Option B
Answer: (b).2.789 W/m² degree

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