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EnglishThis paper presents experimental local heat transfer coefficient and pressure drop results obtained during the evaporation of the zeotropic mixture R407C (R32-R125-R134a, 23/25/52 % in weight). The test section was a smooth, horizontal, stainless steel tube (6 turn ID, 6 in length) uniformly heated by Joule effect. The effects of mass flux, heat flux and evaporating pressure on the heat transfer coefficients have been investigated. The experimental tests have been performed with a refrigerant mass flux of 200 and 355 kg/m(2)s varying the heat flux within the range 8.0-16.9 kW/m(2) and the evaporating pressure from 3.5 up to 10.0 bar.
| Titolo: | Evaporation of refrigerants in a smooth horizontal tube: prediction of R407C heat transfer coefficients and pressure drops | |
| Autori interni: | ||
| Data di pubblicazione: | 2005 | |
| Handle: | http://hdl.handle.net/20.500.12070/13561 | |
| ISBN: | 82-519-2041-8 | |
| Appare nelle tipologie: | 4.1 Contributo in Atti di convegno |
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http://hdl.handle.net/20.500.12070/13561
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