Superhydrophobic heat exchangers delay frost formation and enhance efficency of electric vehicle heat pumps
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When the ambient temperature was 9.8°C, the heat transfer rates of the superhydrophobic heat exchanger were greater than 3 kW, and the system coefficient of performance (COP) was greater than 2.1.
“According to the results, when the ambient temperature was 9.8 ◦ C, the heat transfer rates of the superhydrophobic heat exchanger were greater than 3 kW, and the system coefficient of performance (COP) was greater than 2.1.”
The superhydrophobic surface demonstrated outstanding performance in preventing the formation of frost.
“The superhydrophobic surface demonstrated outstanding performance in preventing the formation of frost.”
The superhydrophilic and untreated MCHX frosted quickly, and the heat transfer rates dropped below 3 kW after 10 min, resulting in lower system COPs of 1.42 and 1.68, respectively.
“In this case, the superhydrophilic and untreated MCHX frosted quickly, and the heat transfer rates dropped below 3 kW after 10 min, resulting in lower system COPs of 1.42 and 1.68, respectively.”
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Cites
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- Authors
- Mahvi, A. J., Boyina, K., Musser, A., Elbel, S., & Miljkovic, N.
- Affiliations
- National Laboratory of the Rockies (US)
- University of Illinois Urbana-Champaign (US)
- Creative Thermal Solutions (US)
- Kyushu University (JP)
- Corresponding author
- Miljkovic, Nenad
- Venue
- International Journal of Heat and Mass Transfer
- Publisher
- Elsevier BV
- Published
- 2021-06
- Volume
- 172
- Pages
- 121162
- ISSN
- 0017-9310 (ISSN-L)
- OpenAlex
- W3138733955
- Cited by
- 92
- References
- 9
- Citations by year
- 2026: 11 · 2025: 23 · 2024: 16 · 2023: 20 · 2022: 13 · 2021: 9
- FWCI
- 4.19
- Type
- journal article
- Language
- en
- Open access
- green
- www.osti.gov
- Licence
- Locations
- International Journal of Heat and Mass Transfer (publishedVersion)
- OSTI OAI (U.S. Department of Energy Office of Scientific and Technical Information) (submittedVersion)
- Funders
- Canadian Thoracic Society
- Ford Motor Company
- Air Conditioning and Refrigeration Center
- University of Illinois at Urbana-Champaign
- Ministry of Education, Culture, Sports, Science and Technology
- International Institute for Carbon-Neutral Energy Research, Kyushu University (WPI-I2CNER)
- National Science Foundation
- University of Illinois System
- Topics
- Physical Sciences › Materials Science › Surfaces, Coatings and Films › Surface Modification and Superhydrophobicity
- Physical Sciences › Engineering › Mechanical Engineering › Refrigeration and Air Conditioning Technologies
- Physical Sciences › Engineering › Aerospace Engineering › Icing and De-icing Technologies
- Keywords
- superhydrophobic surfaces, frost formation, electric vehicle cabin heating, louvered fin heat exchanger, wettability, water retention, heat transfer enhancement, electric vehicle range
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