Condensate drainage on slit or louvered fins in microchannel heat exchangers for anti-frosting
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Louver fins have many edges and corners that can serve as frost nucleation points during frosting.
“This is because the louver fins have many edges and corners, which can serve as frost nucleation points in the frosting process [11,12].”
From Performance Improvement of Microchannel Heat Exchangers with Modified Louver Fins under Frosting Conditions (2023) · cites this paper as [12]
The louver fin with 1.4 mm fin pitch reaches the maximum drainage amount at air velocity 2 m/s, whereas the other three types of MCHX reach the maximum drainage amount at air velocity 1 m/s.
“The louver fin with 1.4 mm fin pitch reached the maximum drainage amount in ua = 2 m / s , whereas the other three types of MCHX reached the maximum drainage amount in ua = 1 m / s .”
The heat transfer rate increases with increasing air velocity.
“As shown in Fig. 17 (a), the heat transfer rate increases with the increase of the air velocity.”
Condensate discharge increases first and then decreases when wind speed increases.
“It is clear that the condensate discharge increases first and then decreases when the wind speed increases.”
When air velocity is greater than 2 m/s, the heat transfer rate of the louver fin is greater than that of the slit fin.
“When ua > 2 m / s , the heat transfer rate of the louver fin is greater than that of the slit fin.”
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- Authors
- Sheng, W., Li, X., Wang, R., Dang, C., & Song, M.
- Affiliations
- Henan Polytechnic University (CN)
- The University of Tokyo (JP)
- Beijing Institute of Technology (CN)
- Corresponding author
- Sheng, Wei
- Venue
- Energy and Buildings
- Publisher
- Elsevier BV
- Published
- 2020-09
- Volume
- 223
- Pages
- 110215
- ISSN
- 0378-7788 (ISSN-L)
- OpenAlex
- W3032999108
- Cited by
- 16
- References
- 18
- Citations by year
- 2026: 3 · 2025: 2 · 2024: 4 · 2023: 2 · 2022: 2 · 2021: 2 · 2020: 1
- FWCI
- 0.86
- Type
- journal article
- Language
- en
- Open access
- closed
- Locations
- Energy and Buildings (publishedVersion)
- Funders
- China Scholarship Council
- Natural Science Foundation of Henan Province (1623 00410112)
- Ministry of Education of the People's Republic of China
- Topics
- Physical Sciences › Engineering › Mechanical Engineering › Refrigeration and Air Conditioning Technologies
- Physical Sciences › Engineering › Mechanical Engineering › Heat Transfer and Optimization
- Physical Sciences › Engineering › Mechanical Engineering › Heat Transfer and Boiling Studies
- Keywords
- condensate drainage, microchannel heat exchangers, anti-frosting, louvered fins, slit fins, air velocity, dew point, dry bulb temperature, brine flow, microchannel evaporator, pressure drop, heat capacity
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