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Title: | Experimental flow boiling study in a 0.52 mm diameter vertical tube using R134a |
Authors: | Shiferaw, J Mahmoud, MM Karayiannis, TG Kenning, DBR |
Keywords: | Flow boiling;Heat transfer mechanisms;Small diameter tubes;R134a |
Issue Date: | 2008 |
Publisher: | Eurotherm 2008 |
Citation: | 5th European Thermal Sciences Conference, Eindhoven, The Netherlands, 18-22 May 2008 |
Abstract: | Experimental results for R134a boiling on a vertical stainless steel tube of internal diameter 0.52 mm are presented in this paper. They form part of an ongoing study of flow boiling in a wide range of small diameter tubes. Other parameters were varied in the range: mass flux 300-700 kg/m2.s; heat flux 1.6-75 kW/m2 and pressure 6 -10 bar. The flow patterns visualised at the exit of the heated test section are first presented. The variation of the heat transfer coefficient with thermodynamic quality and its dependence on heat flux, mass flux and system pressure is then presented and discussed. |
Description: | This article is also available online from the link below. |
URI: | http://www.eurotherm2008.tue.nl/Proceedings_Eurotherm2008/papers/Two-phase_Flow/TPF_5.pdf http://bura.brunel.ac.uk/handle/2438/6570 |
Appears in Collections: | Publications Mechanical and Aerospace Engineering Dept of Mechanical and Aerospace Engineering Research Papers |
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