Publicou 4 edições por ano
ISSN Imprimir: 2169-2785
ISSN On-line: 2167-857X
Indexed in
ONCE-THROUGH CONTACTLESS FLOW BOILING IN A MICRO EVAPORATOR
RESUMO
Equipment miniaturization offers several opportunities such as an increased surface-to-volume ratio combined with high heat transfer coefficients. However, moving toward small-diameter channels demands extra attention to fouling, reliability, and stable operation of the system. The present investigation explores the possibilities of hot gas flow through the porous wall of a pipe as a means to evaporate a liquid fully flowing in the pipe. A reduction of the pressure fluctuations of about 30% to 40% is obtained with this so-called contactless boiling. Because of the injected gas, wall temperatures measured are higher. The reduction in heat transfer coefficient corresponds to an insulating gas layer at the wall with an estimated thickness of 20 µm.
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de Boer Amit, Oliveira Jorge L.G., van der Geld Cees W.M., Malskat Wendy S.J., van den Bos Renate, Nijsten Tamar, van Gemert Martin J.C., Moving heat source in a confined channel: Heat transfer and boiling in endovenous laser ablation of varicose veins, International Journal of Heat and Mass Transfer, 113, 2017. Crossref