ISSN Online: 2377-424X
ISBN Print: 0-89116-559-2
International Heat Transfer Conference 8
EFFECTS OF GEOMETRICAL SHAPES AND PARAMETERS OF REENTRANT GROOVES ON NUCLEATE POOL BOILING HEAT TRANSFER FROM POROUS SURFACES
Abstract
Experimental investigations were performed of the characteristics of nucleate boiling heat transfer on porous surfaces with reentrant grooves using water and methanol as working fluids. The experiments were carried out on 14 different surfaces at atmospheric pressure. One type of these was a surface with parallel grooves of rectangular cross section and sintered cover screen. Another type was a surface with parallel grooves and sintered porous cover plate. The grooves of the latter type were of different shapes. The effects of geometrical shapes and parameters of reentrant cavities on nucleate boiling heat transfer from the surfaces were observed. In addition, theoretical analysis of the evaporation and flow process in the grooves was made.