Heat is transferred from a hot fluid to a cold one through a plane wal – McqOptions

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1.	Heat is transferred from a hot fluid to a cold one through a plane wall of thickness ( ), surface area (A) and thermal conductivity (k). The thermal resistance is
A.	1/A (1/h<sub>1</sub> + /k + 1/h<sub>2</sub>)
B.	A (1/h<sub>1</sub> + /k + 1/h<sub>2</sub>)
C.	1/A (h<sub>1</sub> + /k + h<sub>2</sub>)
D.	A (h<sub>1</sub> + /k + 1/h<sub>2</sub>)
Answer» B. A (1/h<sub>1</sub> + /k + 1/h<sub>2</sub>)

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