Air at 20 degree Celsius flows over a flat plate maintained at 75 degree Celsius. Measurements shows that temperature at a distance of 0.5 mm from the surface of plate is 50 degree Celsius. Presuming thermal conductivity of air is 0.0266 W/m K, estimate the value of local heat transfer coefficient

Air at 20 degree Celsius flows over a flat plate maintained at 75 degr

1.	Air at 20 degree Celsius flows over a flat plate maintained at 75 degree Celsius. Measurements shows that temperature at a distance of 0.5 mm from the surface of plate is 50 degree Celsius. Presuming thermal conductivity of air is 0.0266 W/m K, estimate the value of local heat transfer coefficient
A.	23.18 W/m<sup> 2</sup> K
B.	24.18 W/m<sup> 2</sup> K
C.	25.18 W/m<sup> 2</sup> K
D.	26.18 W/m<sup> 2</sup> K
Answer» C. 25.18 W/m<sup> 2</sup> K

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Air at 20 degree Celsius flows over a flat plate maintained at 75 degree Celsius. Measurements shows that temperature at a distance of 0.5 mm from the surface of plate is 50 degree Celsius. Presuming thermal conductivity of air is 0.0266 W/m K, estimate the value of local heat transfer coefficient

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