Estimate the coefficient of heat transfer from a vertical plate 2m$\times$2m to the surrounding air at 25°C. The plate surface temperature is 150°C. Also calculate the rate of heat transfer from the plate. For air assume the Kinematic viscosity as 1.6´10–5 m2/s.
The properties of air at film temperature are:
Density= 0.972 kg/m3,
Sp. Heat = 1.009 kJ/kg.K,
Thermal conductivity=3.13´10–2W/ m-k,
Prandtl No. = 0.69.
The constants ‘C’ & ‘n’ in Nusselt’s no. are 0.15 & <!--[if gte vml 1]>
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