Free Convection Heat Transfer Coefficient Of Air. N 1696 10 6 m 2 s pr 0699. 31 free convection heat transfer from aluminum copper and iron specimens.
Viscosity μ nsm 2. Nu nusselt number dimensionless pr prandtl number dimensionless ra rayleigh number dimensionless t a temperature of ambient air. 101 where h x.
Depending on what you are calculating you may not need to use any formulas.
Specific heat c jkgk. Q heat transferred js w h heat transfer coefficient wm 2 k s transfer surface m2 tp plate temperature k ta air temperature k for convection we use the convection heat transfer coefficient hc wm 2 k. Many applications involving convective heat transfer take place within pipes tubes or some similar cylindrical device. Depending on what you are calculating you may not need to use any formulas.