Abstract
In this study, the port (inlet and outlet) and frictional pressure drops of a single-phase flow using liquid water and a two-phase flow using R1234ze(E) in a plate heat exchanger (PHE) are measured and analyzed by varying the flow direction, number of channels, temperature, mass flux, and vapor quality. The port-pressure drops are significantly dependent on the resistance of the flow through the channel guide in the PHE. In single-phase flow of liquid water, the port-pressure drop is proportional to the number of channels and the Reynolds number, while the frictional pressure drop exhibits little dependence on the number of channels. Additionally, the port-pressure drop is affected by the flow direction owing to gravity. In two-phase flow of R1234ze(E), the port-pressure drops are significantly dependent on the flow direction owing to the distinctive non-uniformity of the two-phase flow distribution over the channels. The existing correlation substantially underpredicts the measured port-pressure drops. Accordingly, new empirical correlations for the port-pressure drops are developed with high precision, in terms of the kinetic energy of the fluid, the Reynolds number, the normalized density ratio, and the number of channels.
Original language | English |
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Article number | 120009 |
Journal | International Journal of Heat and Mass Transfer |
Volume | 158 |
DOIs | |
Publication status | Published - 2020 Sept |
Bibliographical note
Funding Information:This research was supported by the Korea Institute of Energy Technology Evaluation and Planning (KETEP) , funded by the Ministry of Trade, Industry & Energy, Republic of Korea (Grant No. 10052926 ).
Publisher Copyright:
© 2020 Elsevier Ltd
Keywords
- Plate heat exchanger
- Port-pressure drop
- Pressure drop
- R1234ze(E)
- Water
ASJC Scopus subject areas
- Condensed Matter Physics
- Mechanical Engineering
- Fluid Flow and Transfer Processes