Effect of Different Plenum-Chamber Coefficients on the Frosting of Air-Cooler
The performance of the air-cooler in refrigeration systems plays a key role in their energy efficiency. Here, the plenum-chamber coefficient was defined to investigate a possible way of enhancing the refrigeration coefficient that reflects the efficiency of the system. To investigate the influence o...
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| Format: | Article |
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MDPI AG
2022-01-01
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| Series: | Energies |
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| Online Access: | https://www.mdpi.com/1996-1073/15/2/422 |
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| author | Bin Liu Shengqiang Shi Yongshan Liu Rachid Bennacer Aiqiang Chen Panagiotis E. Theodorakis |
| author_facet | Bin Liu Shengqiang Shi Yongshan Liu Rachid Bennacer Aiqiang Chen Panagiotis E. Theodorakis |
| author_sort | Bin Liu |
| collection | DOAJ |
| description | The performance of the air-cooler in refrigeration systems plays a key role in their energy efficiency. Here, the plenum-chamber coefficient was defined to investigate a possible way of enhancing the refrigeration coefficient that reflects the efficiency of the system. To investigate the influence of the plenum-chamber coefficient on the frosting and the cooling system of the air-cooler, three plenum-chamber coefficients (0.74, 0.97, 1.2) were studied under two different relative humidities. The temperature decreasing curve of the environmental chamber, the velocity distribution of the air-cooler, and the frost accumulation under and on the air-cooler were analyzed. We find that the homogeneity of the velocity distribution of the air-cooler and the frost accumulation increase with a growing plenum-chamber coefficient, while the frost accumulation on the fin will first increase and then decrease with the increase in the plenum-chamber coefficient. In general, frosting is more present when the plenum-chamber coefficient is 0.97. |
| first_indexed | 2024-03-10T01:34:16Z |
| format | Article |
| id | doaj.art-1e2322fa1dbf4afa8fe325259eae5f33 |
| institution | Directory Open Access Journal |
| issn | 1996-1073 |
| language | English |
| last_indexed | 2024-03-10T01:34:16Z |
| publishDate | 2022-01-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Energies |
| spelling | doaj.art-1e2322fa1dbf4afa8fe325259eae5f332023-11-23T13:35:50ZengMDPI AGEnergies1996-10732022-01-0115242210.3390/en15020422Effect of Different Plenum-Chamber Coefficients on the Frosting of Air-CoolerBin Liu0Shengqiang Shi1Yongshan Liu2Rachid Bennacer3Aiqiang Chen4Panagiotis E. Theodorakis5Tianjin Key Laboratory of Refrigeration Technology, Tianjin University of Commerce, Tianjin 300134, ChinaTianjin Key Laboratory of Refrigeration Technology, Tianjin University of Commerce, Tianjin 300134, ChinaTianjin Key Laboratory of Refrigeration Technology, Tianjin University of Commerce, Tianjin 300134, ChinaCNRS (Centre National de la Recherche Scientifique), LMT (Laboratoire de Mécanique et Technologie—Labo. Méca. Tech.), Université Paris-Saclay, ENS (Ecole National Supérieure) Paris-Saclay, 91190 Gif-sur-Yvette, FranceTianjin Key Laboratory of Refrigeration Technology, Tianjin University of Commerce, Tianjin 300134, ChinaInstitute of Physics, Polish Academy of Sciences, Al. Lotników 32/46, 02-668 Warsaw, PolandThe performance of the air-cooler in refrigeration systems plays a key role in their energy efficiency. Here, the plenum-chamber coefficient was defined to investigate a possible way of enhancing the refrigeration coefficient that reflects the efficiency of the system. To investigate the influence of the plenum-chamber coefficient on the frosting and the cooling system of the air-cooler, three plenum-chamber coefficients (0.74, 0.97, 1.2) were studied under two different relative humidities. The temperature decreasing curve of the environmental chamber, the velocity distribution of the air-cooler, and the frost accumulation under and on the air-cooler were analyzed. We find that the homogeneity of the velocity distribution of the air-cooler and the frost accumulation increase with a growing plenum-chamber coefficient, while the frost accumulation on the fin will first increase and then decrease with the increase in the plenum-chamber coefficient. In general, frosting is more present when the plenum-chamber coefficient is 0.97.https://www.mdpi.com/1996-1073/15/2/422plenum-chamber coefficientair-coolerfrost accumulationvelocity distribution |
| spellingShingle | Bin Liu Shengqiang Shi Yongshan Liu Rachid Bennacer Aiqiang Chen Panagiotis E. Theodorakis Effect of Different Plenum-Chamber Coefficients on the Frosting of Air-Cooler Energies plenum-chamber coefficient air-cooler frost accumulation velocity distribution |
| title | Effect of Different Plenum-Chamber Coefficients on the Frosting of Air-Cooler |
| title_full | Effect of Different Plenum-Chamber Coefficients on the Frosting of Air-Cooler |
| title_fullStr | Effect of Different Plenum-Chamber Coefficients on the Frosting of Air-Cooler |
| title_full_unstemmed | Effect of Different Plenum-Chamber Coefficients on the Frosting of Air-Cooler |
| title_short | Effect of Different Plenum-Chamber Coefficients on the Frosting of Air-Cooler |
| title_sort | effect of different plenum chamber coefficients on the frosting of air cooler |
| topic | plenum-chamber coefficient air-cooler frost accumulation velocity distribution |
| url | https://www.mdpi.com/1996-1073/15/2/422 |
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