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Calculation method for flow boiling and flow condensation of R134a and R1234yf in conventional and small diameter channels
Abstract
The paper presents the results of calculations performed using the authors’ model to predict the heat transfer coefficient during flow boiling for two refrigerants R134a and R1234yf. The experimental data from various past studies have been collected and the calculations have been conducted for the full range of quality variation and a wide range of mass velocity. The aim of the study was to test the sensitivity of the in-house flow boiling and flow condensation model. The importance of taking into account the surface tension as the parameter exhibiting its importance in case of the flow in minichannels, as well as the influence of the reduced pressure were analysed. The obtained numerical results show good consistency with those recorded in the experiments.
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- Publication version
- Accepted or Published Version
- DOI:
- Digital Object Identifier (open in new tab) 10.1515/pomr-2017-0032
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- Category:
- Articles
- Type:
- artykuł w czasopiśmie wyróżnionym w JCR
- Published in:
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Polish Maritime Research
no. 24,
pages 141 - 148,
ISSN: 1233-2585 - Language:
- English
- Publication year:
- 2017
- Bibliographic description:
- Mikielewicz D., Jakubowska B.: Calculation method for flow boiling and flow condensation of R134a and R1234yf in conventional and small diameter channels// Polish Maritime Research. -Vol. 24, iss. SI(93) (2017), s.141-148
- DOI:
- Digital Object Identifier (open in new tab) 10.1515/pomr-2017-0032
- Verified by:
- Gdańsk University of Technology
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