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Heat transfer coefficient and pressure drop during refrigerant R-134a condensation in a plate heat exchanger
Djordjević, Emila M., Kabelac, Stephan and Šerbanović, Slobodan P. Heat transfer coefficient and pressure drop during refrigerant R-134a condensation in a plate heat exchanger Chemical Papers, Vol.62, No. 1, 2008, 78-85
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Document type:
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Článok z časopisu / Journal Article |
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Collection:
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Chemical papers
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| Author(s) |
Djordjević, Emila M.
Kabelac, Stephan
Šerbanović, Slobodan P.
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| Title |
Heat transfer coefficient and pressure drop during refrigerant R-134a condensation in a plate heat exchanger
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| Journal name |
Chemical Papers
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| Publication date |
2008
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| Year available |
2008
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| Volume number |
62
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| Issue number |
1
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| ISSN |
0366-6352
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| Start page |
78
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| End page |
85
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| Place of publication |
Poland
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| Publisher |
Versita
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| Collection year |
2008
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| Language |
english
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| Subject |
290000 Engineering and Technology
290600 Chemical Engineering
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| Abstract/Summary |
The condensation heat transfer coefficient and the two-phase pressure drop of refrigerant R-134a in a vertical plate heat exchanger were investigated experimentally. The area of the plate was divided into several segments along the vertical axis. For each of the segments, local values of the heat transfer coefficient and frictional pressure drop were calculated and presented as a function of the mean vapor quality in the segment. Owing to the thermocouples installed along the plate surface, it was possible to determine the temperature distribution and vapor quality profile inside the plate. The influences of the mass flux and the heat flux on the heat transfer coefficient and the pressure drop were also taken into account and a comparison with previously published experimental data and literature correlations was carried out.
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