Visualization of Vapor Bubbles on Saturation Pool Boiling Heat Transfer from a Horizontal Cylinder. Observation of Nucleate Boiling Regime, Critical Heat Flux Point and Film Boiling Regime.

Saturation pool boiling heat transfer from a horizontal cylinder to distilled water is studied under an atmospheric pressure condition. The horizontal cylinder is made of platinum. Diameter and length of the cylinder are 0.8mm and 59.7mm, respectively. The horizontal cylinder is heated by a D. C. electric power source. Vapor bubbles on horizontal cylinder are photographed by a flash (25μs) of stroboscope. Vapor bubbles of nucleate boiling regime, critical heat flux point and film boiling regime are visualized.