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Consider above problem, find out Grashof number


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This Chapter Diffusion-in-Solids-and-Molecular-Diffusion-in-Fluids consists of the following topics

A steam pipe 50 mm diameter and 2.5 m long has been placed horizontally and exposed to still air at 25 degree Celsius. If the pipe wall temperature is 295 degree Celsius, determine the rate of heat loss. At the mean temperature difference of 160 degree Celsius, the thermo-physical properties of air are
k =3.64 * 10 -2 W/m K
v =30.09 * 10 -6 m2/s
P r =0.682
Î’ =1/160 + 273 = 2.31 * 10 -3 per K

Consider above problem, find out Grashof number

Consider the above problem, find what percent of power is lost by free convection?

Consider the above problem

find out the Grashof number

Diffusion in Solids and Molecular Diffusion in Fluids

Mass-Transfer