Air at 20 degree Celsius flows over a flat surface maintained at 80 degree Celsius. Estimate the value of local heat transfer coefficient if the local heat flow at a point was measured as 1250 W/m2. Take thermal conductivity of air as 0.028 W/m K

Air at 20 degree Celsius flows over a flat surface maintained at 80 de

1.	Air at 20 degree Celsius flows over a flat surface maintained at 80 degree Celsius. Estimate the value of local heat transfer coefficient if the local heat flow at a point was measured as 1250 W/m². Take thermal conductivity of air as 0.028 W/m K
A.	23.83 W/m<sup> 2</sup> K
B.	22.83 W/m<sup> 2</sup> K
C.	21.83 W/m<sup> 2</sup> K
D.	20.83 W/m<sup> 2</sup> K
Answer» E.

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Air at 20 degree Celsius flows over a flat surface maintained at 80 degree Celsius. Estimate the value of local heat transfer coefficient if the local heat flow at a point was measured as 1250 W/m2. Take thermal conductivity of air as 0.028 W/m K

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Air at 20 degree Celsius flows over a flat surface maintained at 80 degree Celsius. Estimate the value of local heat transfer coefficient if the local heat flow at a point was measured as 1250 W/m². Take thermal conductivity of air as 0.028 W/m K