Question

What is the heat transfer coefficient of air

Answer 1

Heat transfer coefficient :

1. Heat transfer coefficient is defined as the amount of heat transported per kelvin per unit area.
2. The convection heat transfer co-efficient of air is given by the expression :
   $h_c=10.45–v+10v^{1/2}$
   Where$h_c=$ heat transfer coefficient $(kCal/m^2{h}^{0}C)$
   $v=$ relative speed between air and the object surface $(m/s)$

Hence the transfer coefficient of air is $h_c=10.45–v+10v^{1/2}$.