Transfer of heat from one place to another by the movement of fluids (Air or liquid). Convective heat transfer involves conduction and fluid flow of molecules. Check Out various modes of heat transfer here. You can use this calculator to calculate convective heat transfer.
Formula For Convective Heat Transfer :
Convection Heat transfer (Qv) = hc A dT
A = heat transfer area in square meter,
hc= Convective Heat Transfer Coefficient (W/square m K)
dT = Temperature Difference
Value of Convective Heat Transfer coefficient :
Convective heat transfer coefficient value can be calculated with given empirical formula for air velocity range from 2 m/sec to 20 m/sec.
You can also use calculator for calculating convective heat transfer coefficient value.
Convective Heat Transfer coefficient Values for air:
Natural Convection = 5 – 25 W/m2 K
Forced Convection = 10 – 200 W/ m2 K