Performance evaluation of a window room air conditioner with microchannel condensers
Abstract
A performance evaluation for a residential window air conditioning system with microchannel condensers has been performed. First, a series of wind-tunnel calorimeter tests were conducted for two different prototype microchannel heat exchangers. The measured heat transfer and pressure drop characteristics for the heat exchangers were then compared to calculated value for four conventional finned round-tube designs, which were obtained using a validated simulation model for identical air and refrigerant inlet conditions. Finally, two prototype microchannel condensers are installed in the system and system performance tests were conducted. System characteristics such as capacity, energy efficiency ratio, and suction and discharge pressures and temperatures are presented, and compared with those for the conventional system. Refrigerant charge requirements for a window air conditioner with a microchannel condenser can be decreased by 35 percent compared to the conventional baseline system. The condenser core volume and weight can be reduced by 55 and 35 percent, respectively.
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Microchannel coils have been employed in heat pump applications to replace conventional fin-and-tube coils because of their compactness, lower coil weight, and less refrigerant charge, which could lower direct global warming contribution from refrigerant leakage.
“Microchannel coils have been employed recently in heat pump applications to replace conventional fin and tube coils due to their compactness, lower coil weight and less refrigerant charge which could lower the direct contribution to global warming due to potential refrigerant leakage (Garimella, 2003; Kim and Groll, 2003; Kim and Bullard, 2002; Park and Hrnjak, 2007).”
From Experimental investigation of adverse effect of frost formation on microchannel evaporators, part 1: Effect of fin geometry and environmental effects (2013) · cites this paper as Kim and Bullard, 2002
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Air-side thermal hydraulic performance of multi-louvered fin aluminum heat exchangers
Kim, M.-H., & Bullard, C. W. (2002) · International Journal of Refrigeration · doi:10.1016/s0140-7007(01)00025-1 · Cited by 280 · see citing works
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Moallem, E., Padhmanabhan, S., Cremaschi, L., & Fisher, D. E. (2012) · International Journal of Refrigeration · doi:10.1016/j.ijrefrig.2011.08.010 · Cited by 61 · see citing works
Moallem, E., Hong, T., Cremaschi, L., & Fisher, D. E. (2013) · International Journal of Refrigeration · doi:10.1016/j.ijrefrig.2012.09.009 · Cited by 57 · see citing works
PADHMANABHAN, S., CREMASCHI, L., & FISHER, D. (2011) · International Journal of Air-Conditioning and Refrigeration · doi:10.1142/s2010132511000600 · Cited by 29 · see citing works
Condensate drainage on slit or louvered fins in microchannel heat exchangers for anti-frosting
Sheng, W., Li, X., Wang, R., Dang, C., & Song, M. (2020) · Energy and Buildings · doi:10.1016/j.enbuild.2020.110215 · Cited by 16 · see citing works
- Authors
- Kim, M.-H., & Bullard, C. W.
- Affiliations
- University of Illinois Urbana-Champaign (US)
- ORCID
- Kim, Man-Hoe
- Venue
- Journal of Energy Resources Technology
- Publisher
- Wiley
- Published
- 2002-03-01
- Volume
- 124
- Issue
- 1
- Pages
- 47-55
- ISSN
- 0195-0738 (ISSN-L)
- 1528-8994
- OpenAlex
- W1973965520
- Cited by
- 48
- References
- 1
- Citations by year
- 2026: 1 · 2025: 3 · 2024: 1 · 2023: 4 · 2022: 4 · 2021: 1 · 2020: 6 · 2019: 2 · 2018: 1 · 2017: 3 · 2016: 1 · 2015: 1 · 2014: 1 · 2013: 4 · 2012: 6
- FWCI
- 3.05
- Type
- journal article
- Language
- en
- Open access
- closed
- Locations
- Journal of Energy Resources Technology (publishedVersion)
- Funders
- Air Conditioning and Refrigeration Center
- Samsung
- University of Illinois at Urbana-Champaign
- 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
- window air conditioner, microchannel condenser, microchannel heat exchangers, heat transfer, pressure drop, calorimeter testing, energy efficiency ratio, refrigerant charge reduction, residential air conditioning
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