Phase change heat exchangers made of pin-fins for boiling enhancement / Łukasz J. Orman, Norbert Radek, Jacek Pietraszek, Dariusz Gontarski // W: QPI 2019 : Quality Production Improvement / eds. Robert ... więcej

Phase change heat exchangers made of pin-fins for boiling enhancement / Łukasz J. Orman, Norbert Radek, Jacek Pietraszek, Dariusz Gontarski // W: QPI 2019 : Quality Production Improvement / eds. Robert Ulewicz, Branislav Hadzima. – Warsaw : Walter de Gruyter (Sciendo), 2019. – S. 433-439 : rys., wykr. – Bibliogr. s. 437-439, Abstr. – Mat konf.: 13th International Conference Quality Production Improvement - QPI 2019, Zaborze near Myszków, 5-7.06.2019. – ISBN 978-3-11-068058-4 (print). – ISBN 978-3-11-068059-1 (ebook pdf)

The paper deals with the important issue of boiling heat transfer enhancement using mechanical treatment of the heater surface. The surface has been modified in such a way that microfins have been produced. ... więcej

The paper deals with the important issue of boiling heat transfer enhancement using mechanical treatment of the heater surface. The surface has been modified in such a way that microfins have been produced. The application of such a structure leads to highly increased heat fluxes in relation to the smooth surface as has been presented and discussed in the paper. The experiments including distilled water and ethyl alcohol on the horizontal copper samples of 3 cm diameter have been considered. The heat flux value of microfinned surface was even nine times higher than the heat flux dissipated from the smooth surface without any coating. It proves a considerable enhancement of boiling with the application of the mechanically treated surfaces of heat exchangers.