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

. 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 mma) 1.789 W/m2 degreeb) 2.789 W/m2 degreec) 3.789 W/m2 degreed) 4.789 W/m2 degree

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

1.	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.	1.789 W/m2 degree
B.	2.789 W/m2 degree
C.	3.789 W/m2 degree
D.	4.789 W/m2 degree
E.	. 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 mma) 1.789 W/m2 degreeb) 2.789 W/m2 degreec) 3.789 W/m2 degreed) 4.789 W/m2 degree
Answer» C. 3.789 W/m2 degree

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