Boiling Heat Transfer Coefficient. Heat transfer coefficients were measured for boiling water containing various additives. Since steam has a lower convective heat transfer coefficient than water the steam patches on the heat transfer surface act to insulate the surface making heat transfer more difficult.
Overall u btuhr ft 2 f. The bubbles grow and group together covering small areas of the heat transfer surface with a film of steam. Heat transfer coefficients and bubble points estimated at different pressures were compared with experimental data.
A graphical analyses for 56 sets of literature data was used in studying the effect of heat flux q and operating pressure p on boiling heat transfer coefficient h.
For the convection f heat transfer to have a physical meaning there must be a temperature difference between the heated surface. A graphical analyses for 56 sets of literature data was used in studying the effect of heat flux q and operating pressure p on boiling heat transfer coefficient h. Where h is the boiling heat transfer coefficient l the characteristic length which is one of the experimental parameters and k is the thermal conductivity. Since steam has a lower convective heat transfer coefficient than water the steam patches on the heat transfer surface act to insulate the surface making heat transfer more difficult.