Once-through contactless flow boiling in a micro evaporator
| Autor: | CM Rops, GJ Giaco Oosterbaan, van der Cwm Cees Geld |
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| Jazyk: | angličtina |
| Rok vydání: | 2014 |
| Předmět: | |
| Zdroj: | Interfacial Phenomena and Heat Transfer, 2(3), 265-271. Begell House Inc. Proceedings of the 5th international conference on heat transfer and fluid flow in microscale (HTFFM-V), 22-25 april 2014, Marseille, France |
| ISSN: | 2167-857X 2169-2785 |
| Popis: | 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 m. |
| Databáze: | OpenAIRE |
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