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[13864] Artykuł: Hysteresis phenomena at the onset of subcooled nucleate flow boiling in microchannelsCzasopismo: Heat Transfer Engineering Tom: 25, Zeszyt: 3, Strony: 44-51ISSN: 0145-7632 Wydawca: TAYLOR & FRANCIS INC, 325 CHESTNUT ST, SUITE 800, PHILADELPHIA, PA 19106 USA Opublikowano: 2004 Autorzy / Redaktorzy / Twórcy
Grupa MNiSW: Publikacja w czasopismach wymienionych w wykazie ministra MNiSzW (część A) Punkty MNiSW: 20 Klasyfikacja Web of Science: Article; Proceedings Paper Pełny tekst DOI Web of Science Keywords: Flow Dynamics  Boiling  Subcooling  Microchannels  |
In this paper, attempts were made to experimentally investigate the boiling incipience in a narrow rectangular vertical channel of 1 mm depth with an external 40 mm wide wall heated uniformly and others assumed quasiadiabatic. The “boiling front” location was determined from the temperature distribution of the heated wall obtained from liquid crystal thermography. Boiling incipience occurs when a considerable rise in the wall temperature above the saturation temperature takes place. Thus, boiling incipience is accompanied by “nucleation hysteresis.” The impact of various factors on the boiling incipience in microchannels, such as pressure, the inlet liquid subcooling, and flow velocity, were investigated.