| Autor: |
Zhukov, Vladimir E., Mezentseva, Nadezhda N., Mezentsev, Ivan V. |
| Předmět: |
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| Zdroj: |
AIP Conference Proceedings; 2021, Vol. 2422 Issue 1, p1-6, 6p |
| Abstrakt: |
Binary non-azeotropic mixtures are increasingly used in various heat exchange devices as a heat carrier or working fluid. When using non-azeotropic mixtures, it is necessary to take into account the features of the heat transfer process determined by specific thermodynamics of these mixtures. This paper presents the results of a study of hydrodynamics and heat transfer during circulation of an alcohol-water mixture through a heated cylindrical channel. The inner diameter of the channel is 7.6 mm, the length is 4 m. The experiments were carried out using a mixture of ethyl alcohol and water at mass concentration of the volatile component of 22 %. Mass velocity range is 160–720 kg/(m2·s), the vessel pressure is 0.02 MPa. The operating parameters correspond to both single-phase and two-phase heat transfer regimes. A detailed description of the experimental setup and the results on temperature distribution along the working section are given. It is found that in a non-azeotropic mixture, the vaporization process begins significantly earlier than the equilibrium conditions determine. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
| Externí odkaz: |
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