Enhanced evaporation of porous materials with micropores and high porosity

Autor: Noriyuki UNNO, Kazuhisa YUKI, Ryo INOUE, Yasuo KOGO, Jun TANIGUCHI, Shin-ichi SATAKE
Jazyk: angličtina
Rok vydání: 2020
Předmět:
Zdroj: Journal of Thermal Science and Technology, Vol 15, Iss 1, Pp JTST0007-JTST0007 (2020)
Druh dokumentu: article
ISSN: 1880-5566
DOI: 10.1299/jtst.2020jtst0007
Popis: Owing to their large surface area and capillary effect, porous materials are highly desired for heat-transfer applications. In this study, we investigated the evaporation behavior of a water droplet on porous epoxy resin with a three-dimensional network structure. As the material existed in the liquid state before sintering, it could be easily converted into a porous body on a heating surface. The material showed a pore size of 0.15 μm and a porosity of 50%. First, the evaporation behavior of a water droplet placed on the surface of this porous body was investigated. It was found that the evaporation rate increased when the evaporation was carried out on the surface of the porous body. Then, a vapor chamber experiment was carried out with the porous material. The porous body acted as the generating surface and its heat transfer performance was estimated. The cooling performance of the porous body was 1.2 times higher than that of the non-porous material.
Databáze: Directory of Open Access Journals