Hot air at 80°c is blown over a 2-m x 4-m flat surface at 45°c. if the average convection heat transfer coefficient is 55 w/m2·k, determine the rate of heat transfer from the air to the plate, in kw.

Answer : The rate of heat transfer from air to plate is 22 KW

Explanation :

It is given that,

Temperature of flat surface,

Temperature of flat surface,

Area of surface,

Heat coefficient,

So, rate of heat transfer,

Hence, the rate of heat transfer from air to plate is 22 KW

0.3x0.21x0.08kg=mass 1 sheet

mass 500 = 500xmass 1

volume pile = 0.3x0.2x0.048

density=mass/volume= 500xmass 1/0.3x0.2x0.048

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