DOI: 10.1615/ICHMT.2009.CONV
ISBN Print: 978-1-56700-261-4
ISSN Online: 2642-3499
ISSN Flash Drive: 2642-3502
HEAT TRANSFER AND HYSTERESIS PHENOMENA IN SINTERED, METAL, FIBROUS POROUS COVERINGS
ABSTRACT
The paper discusses the results of experiments conducted with heat transfer hysteresis in metal fibrous porous coverings. Three qualitatively different boiling curves were selected: I-kind hysteresis, characterized by a decreasing heat transfer coefficient after the flux is decreased, occurring after the maximum flux value is reached, II-kind hysteresis, characterized by a growth of the heat transfer coefficient when the heat flux is decreased to below its maximum value and III-kind hysteresis characterized by a decrease and increase of the heat transfer coefficient, also a rare occurrence. Boiling process mechanisms in individual boiling curves with hysteresis were interpreted.