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Abstract
The results of flow boiling of R1233zd(E) in a 3 mm vertical stainless steel tube are presented at moderate and high saturation temperatures. Integral flow characteristics in the form of pressure drop and heat transfer coefficient are discussed for saturation temperatures ranging from 115 to 145 °C (corresponding reduced pressures from 0.2 to 0.7), mass velocity of 800 kg/m2s and heat flux of 20 kW/m2. All of the obtained heat transfer trends initially decrease with vapor quality and then do not change or increase with vapor quality. The decrease is connected to the dominance of the nucleate boiling phenomenon. The subsequent increase in heat transfer indicates the increased effect of convective boiling. The rate of the increase depends on the value of reduced pressure (the smaller the reduced pressure the higher the rate). The obtained data have been compared with the predictions of the in-house model and some well-known two-phase flow correlations. The in-house model predictions presented the highest accuracy, with MAPE equal to 23.17 % for R1233zd(E) and 19.23 % for R245fa (data from literature).
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- Publication version
- Accepted or Published Version
- DOI:
- Digital Object Identifier (open in new tab) 10.1016/j.expthermflusci.2023.110964
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- Category:
- Articles
- Type:
- artykuły w czasopismach
- Published in:
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EXPERIMENTAL THERMAL AND FLUID SCIENCE
no. 147,
ISSN: 0894-1777 - Language:
- English
- Publication year:
- 2023
- Bibliographic description:
- Pysz M., Mikielewicz D.: Flow boiling of R1233zd(E) in a 3 mm vertical tube at moderate and high reduced pressures// EXPERIMENTAL THERMAL AND FLUID SCIENCE -,iss. 147 (2023), s.110964-
- DOI:
- Digital Object Identifier (open in new tab) 10.1016/j.expthermflusci.2023.110964
- Sources of funding:
- Verified by:
- Gdańsk University of Technology
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