Eventos Anais de eventos
COBEM 2019
25th International Congress of Mechanical Engineering
INTENSIFICATION OF POOL BOILING HEAT TRANSFER BY USING MICRO-FIN SURFACES
Submission Author:
Igor Seicho Kiyomura , SP
Co-Authors:
Igor Seicho Kiyomura, Reinaldo Rodrigues de Souza, Elaine Maria Cardoso
Presenter: Elaine Maria Cardoso
doi://10.26678/ABCM.COBEM2019.COB2019-1805
Abstract
The need for more efficient and compact heat exchangers, especially in microelectronics, and products with high thermal load has been motivating the research on new technics for increasing the boiling heat transfer. The heated surface can be modified by using micro-fins that enlarge the effective area for heat transfer. In this context, this work aims to analyze modified heating surfaces consisting of micro-fin array surfaces. All surfaces were submitted to metallographic (scanning electron microscopy), wettability and pool boiling tests by using DI-water as working fluid (at saturated conditions). The presence of the micro-fins increases the contact area with liquid leading to a heat transfer augmentation as compared to the plain surface.
Keywords
Microstructure, micro-fin surface, pool boiling, Heat transfer coefficient
