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Heat Transfer Research
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ISSN Imprimir: 1064-2285
ISSN On-line: 2162-6561

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Heat Transfer Research

DOI: 10.1615/HeatTransRes.v32.i1-3.50
7 pages

Impulse Superheating of the Solutions of Ethyl Alcohol with Water at Negative Pressures

V. E. Vinogradov
Institute of Thermophysics, Ural Branch of the Russian Academy of Sciences, Ekaterinburg, Russia
Pavel A. Pavlov
Institute of Thermophysics, Ural Branch of the Russian Academy of Sciences, Amundsen Street 107a, Ekaterinburg, 620016, Russia

RESUMO

We carried out an experimental study of the boiling-up of ethyl alcohol, water, and of their solutions on impulse overheating on a thin platinum wire in the field of temperatures from 100 to 310°C and negative pressures of up to −10 MPa. We obtained the dependences of the temperature of the limiting overheating of liquid over a wire on the magnitude of the negative pressure. In the case of a pure alcohol (with the concentration of 96 vol. %) the limit of the attainable overheating of liquid (Tov(P)) continually passes from the region of positive to the region of negative pressures. The additions of water into ethanol cause a discontinuity of Tov(P) in transition to negative pressures towards a decrease in the temperature of the limiting overheating of liquid.


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