Originally Posted by
Aik
Surface heat transfer coefficient (h) depends on many factors: density, viscosity, thermal conductivity of fluid, geometrical dimensions of clad body and etc. Also coefficient depends on velocity of fluid relatively the clad body. For natural covection of fluid surface heat transfer coefficient is:
115 - 700 kW/(m^2*C)
For forced convection water surface heat transfer coefficient is:
115 - 11500 kW/(m^2*C).
There aren't general theory of finding this coefficient but there are some theories for special cases.