Exergy Analysis of Advanced Adsorption Cooling Cycles
This study conducted an exergy analysis of advanced adsorption cooling cycles. The possible exergy losses were divided into internal losses and external losses, and the exergy losses of each process in three advanced cycles: a mass recovery cycle, heat recovery cycle and combined heat and mass recov...
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MDPI AG
2020-09-01
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| Series: | Entropy |
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| Online Access: | https://www.mdpi.com/1099-4300/22/10/1082 |
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| author | Ngoc Vi Cao Xuan Quang Duong Woo Su Lee Moon Yong Park Seung Soo Lee Jae Dong Chung |
| author_facet | Ngoc Vi Cao Xuan Quang Duong Woo Su Lee Moon Yong Park Seung Soo Lee Jae Dong Chung |
| author_sort | Ngoc Vi Cao |
| collection | DOAJ |
| description | This study conducted an exergy analysis of advanced adsorption cooling cycles. The possible exergy losses were divided into internal losses and external losses, and the exergy losses of each process in three advanced cycles: a mass recovery cycle, heat recovery cycle and combined heat and mass recovery cycle were calculated. A transient two-dimensional numerical model was used to solve the heat and mass transfer kinetics. The exergy destruction of each component and process in a finned tube type, silica gel/water working paired-adsorption chiller was estimated. The results showed that external loss was significantly reduced at the expense of internal loss. The mass recovery cycle reduced the total loss to 60.95 kJ/kg, which is −2.76% lower than the basic cycle. In the heat recovery cycle, exergy efficiency was significantly enhanced to 23.20%. The optimum value was 0.1248 at a heat recovery time of 60 s. The combined heat and mass recovery cycle resulted in an 11.30% enhancement in exergy efficiency, compared to the heat recovery cycle. The enhancement was much clearer when compared to the basic cycle, with 37.12%. The observed dependency on heat recovery time and heating temperature was similar to that observed for individual mass recovery and heat recovery cycles. |
| first_indexed | 2024-03-10T16:02:18Z |
| format | Article |
| id | doaj.art-f7bfc10675f4426b94601cc8ddcfbb29 |
| institution | Directory Open Access Journal |
| issn | 1099-4300 |
| language | English |
| last_indexed | 2024-03-10T16:02:18Z |
| publishDate | 2020-09-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Entropy |
| spelling | doaj.art-f7bfc10675f4426b94601cc8ddcfbb292023-11-20T15:11:42ZengMDPI AGEntropy1099-43002020-09-012210108210.3390/e22101082Exergy Analysis of Advanced Adsorption Cooling CyclesNgoc Vi Cao0Xuan Quang Duong1Woo Su Lee2Moon Yong Park3Seung Soo Lee4Jae Dong Chung5Department of Mechanical Engineering, Sejong University, Seoul 05006, KoreaDepartment of Mechanical Engineering, Sejong University, Seoul 05006, KoreaDepartment of Mechanical Engineering, Sejong University, Seoul 05006, KoreaDepartment of Mechanical Engineering, Sejong University, Seoul 05006, KoreaDepartment of Mechanical Engineering, Sejong University, Seoul 05006, KoreaDepartment of Mechanical Engineering, Sejong University, Seoul 05006, KoreaThis study conducted an exergy analysis of advanced adsorption cooling cycles. The possible exergy losses were divided into internal losses and external losses, and the exergy losses of each process in three advanced cycles: a mass recovery cycle, heat recovery cycle and combined heat and mass recovery cycle were calculated. A transient two-dimensional numerical model was used to solve the heat and mass transfer kinetics. The exergy destruction of each component and process in a finned tube type, silica gel/water working paired-adsorption chiller was estimated. The results showed that external loss was significantly reduced at the expense of internal loss. The mass recovery cycle reduced the total loss to 60.95 kJ/kg, which is −2.76% lower than the basic cycle. In the heat recovery cycle, exergy efficiency was significantly enhanced to 23.20%. The optimum value was 0.1248 at a heat recovery time of 60 s. The combined heat and mass recovery cycle resulted in an 11.30% enhancement in exergy efficiency, compared to the heat recovery cycle. The enhancement was much clearer when compared to the basic cycle, with 37.12%. The observed dependency on heat recovery time and heating temperature was similar to that observed for individual mass recovery and heat recovery cycles.https://www.mdpi.com/1099-4300/22/10/1082adsorption chillermass recoveryheat recoveryexergy efficiencyexergy loss |
| spellingShingle | Ngoc Vi Cao Xuan Quang Duong Woo Su Lee Moon Yong Park Seung Soo Lee Jae Dong Chung Exergy Analysis of Advanced Adsorption Cooling Cycles Entropy adsorption chiller mass recovery heat recovery exergy efficiency exergy loss |
| title | Exergy Analysis of Advanced Adsorption Cooling Cycles |
| title_full | Exergy Analysis of Advanced Adsorption Cooling Cycles |
| title_fullStr | Exergy Analysis of Advanced Adsorption Cooling Cycles |
| title_full_unstemmed | Exergy Analysis of Advanced Adsorption Cooling Cycles |
| title_short | Exergy Analysis of Advanced Adsorption Cooling Cycles |
| title_sort | exergy analysis of advanced adsorption cooling cycles |
| topic | adsorption chiller mass recovery heat recovery exergy efficiency exergy loss |
| url | https://www.mdpi.com/1099-4300/22/10/1082 |
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