Effect of louver angle on performance of heat exchanger with serpentine fins and flat tubes in frosting: Importance of experiments in periodic frosting
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After several frosting cycles, the heat exchanger with the maximum louver angle (39°) has the best overall thermal-hydraulic and drainage performance.
“Results revealed that after several frosting cycles, the heat exchanger with the maximum louver angle (39 ◦ ) has the best overall thermal-hydraulic and drainage performance.”
Under periodic frosting and defrosting conditions, water retention gradually increased, and more water was concentrated at the trailing edge.
“The retention of water gradually increased, under the periodic frosting and defrosting conditions, and more water was concentrated at the trailing edge.”
As the louver angle increased, frost melt water was more easily removed and less water was retained.
“In addition, as the louver angle increased, frost melt water was more easily removed and less water was retained.”
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- Authors
- Hrnjak, P., Zhang, P., & Rennels, C.
- Affiliations
- University of Illinois Urbana-Champaign (US)
- Corresponding author
- Hrnjak, Pega
- Venue
- International Journal of Refrigeration
- Publisher
- Elsevier BV
- Published
- 2017-12
- Volume
- 84
- Pages
- 321-335
- ISSN
- 0140-7007 (ISSN-L)
- OpenAlex
- W2744032938
- Cited by
- 24
- References
- 19
- Citations by year
- 2026: 3 · 2025: 2 · 2024: 2 · 2023: 2 · 2022: 7 · 2021: 3 · 2020: 2 · 2018: 3
- FWCI
- 1.06
- Type
- journal article
- Language
- en
- Open access
- closed
- Locations
- International Journal of Refrigeration (publishedVersion)
- Funders
- Modine Manufacturing Company
- Zhejiang Provincial Natural Science Foundation (LY13E060005)
- Topics
- Physical Sciences › Engineering › Mechanical Engineering › Heat Transfer and Optimization
- Physical Sciences › Engineering › Mechanical Engineering › Refrigeration and Air Conditioning Technologies
- Physical Sciences › Engineering › Mechanical Engineering › Heat Transfer Mechanisms
- Keywords
- louver angle, flat tube, microchannel heat exchangers, air-side pressure drop, thermal transmittance, fin spacing, air-to-air heat exchanger
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