Performance Analysis of Hybrid Desiccant Cooling System with Enhanced Dehumidification Capability Using TRNSYS
In a field test of a hybrid desiccant cooling system (HDCS) linked to a gas engine cogeneration system (the latter system is hereafter referred to as the combined heat and power (CHP) system), in the cooling operation mode, the exhaust heat remained and the latent heat removal was insufficient. In t...
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MDPI AG
2021-04-01
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| Online Access: | https://www.mdpi.com/2076-3417/11/7/3236 |
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| author | Ji Hyeok Kim Joon Ahn |
| author_facet | Ji Hyeok Kim Joon Ahn |
| author_sort | Ji Hyeok Kim |
| collection | DOAJ |
| description | In a field test of a hybrid desiccant cooling system (HDCS) linked to a gas engine cogeneration system (the latter system is hereafter referred to as the combined heat and power (CHP) system), in the cooling operation mode, the exhaust heat remained and the latent heat removal was insufficient. In this study, the performance of an HDCS was simulated at a humidity ratio of 10 g/kg in conditioned spaces and for an increasing dehumidification capacity of the desiccant rotor. Simulation models of the HDCS linked to the CHP system were based on a transient system simulation tool (TRNSYS). Furthermore, TRNBuild (the TRNSYS Building Model) was used to simulate the three-dimensional structure of cooling spaces and solar lighting conditions. According to the simulation results, when the desiccant capacity increased, the thermal comfort conditions in all three conditioned spaces were sufficiently good. The higher the ambient temperature, the higher the evaporative cooling performance was. The variation in the regeneration heat with the outdoor conditions was the most dominant factor that determined the coefficient of performance (COP). Therefore, the COP was higher under high temperature and dry conditions, resulting in less regeneration heat being required. According to the prediction results, when the dehumidification capacity is sufficiently increased for using more exhaust heat, the overall efficiency of the CHP can be increased while ensuring suitable thermal comfort conditions in the cooling space. |
| first_indexed | 2024-03-10T12:36:35Z |
| format | Article |
| id | doaj.art-436b05880cfc439690f7562151dad647 |
| institution | Directory Open Access Journal |
| issn | 2076-3417 |
| language | English |
| last_indexed | 2024-03-10T12:36:35Z |
| publishDate | 2021-04-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Applied Sciences |
| spelling | doaj.art-436b05880cfc439690f7562151dad6472023-11-21T14:11:50ZengMDPI AGApplied Sciences2076-34172021-04-01117323610.3390/app11073236Performance Analysis of Hybrid Desiccant Cooling System with Enhanced Dehumidification Capability Using TRNSYSJi Hyeok Kim0Joon Ahn1Department of Mechanical Engineering, Graduate School, Kookmin University, Seoul 02707, KoreaSchool of Mechanical Engineering, Kookmin University, Seoul 02707, KoreaIn a field test of a hybrid desiccant cooling system (HDCS) linked to a gas engine cogeneration system (the latter system is hereafter referred to as the combined heat and power (CHP) system), in the cooling operation mode, the exhaust heat remained and the latent heat removal was insufficient. In this study, the performance of an HDCS was simulated at a humidity ratio of 10 g/kg in conditioned spaces and for an increasing dehumidification capacity of the desiccant rotor. Simulation models of the HDCS linked to the CHP system were based on a transient system simulation tool (TRNSYS). Furthermore, TRNBuild (the TRNSYS Building Model) was used to simulate the three-dimensional structure of cooling spaces and solar lighting conditions. According to the simulation results, when the desiccant capacity increased, the thermal comfort conditions in all three conditioned spaces were sufficiently good. The higher the ambient temperature, the higher the evaporative cooling performance was. The variation in the regeneration heat with the outdoor conditions was the most dominant factor that determined the coefficient of performance (COP). Therefore, the COP was higher under high temperature and dry conditions, resulting in less regeneration heat being required. According to the prediction results, when the dehumidification capacity is sufficiently increased for using more exhaust heat, the overall efficiency of the CHP can be increased while ensuring suitable thermal comfort conditions in the cooling space.https://www.mdpi.com/2076-3417/11/7/3236hybrid desiccant cooling system (HDCS)regeneration heatcooling capacitydesiccant rotorcoefficient of performance (COP) |
| spellingShingle | Ji Hyeok Kim Joon Ahn Performance Analysis of Hybrid Desiccant Cooling System with Enhanced Dehumidification Capability Using TRNSYS Applied Sciences hybrid desiccant cooling system (HDCS) regeneration heat cooling capacity desiccant rotor coefficient of performance (COP) |
| title | Performance Analysis of Hybrid Desiccant Cooling System with Enhanced Dehumidification Capability Using TRNSYS |
| title_full | Performance Analysis of Hybrid Desiccant Cooling System with Enhanced Dehumidification Capability Using TRNSYS |
| title_fullStr | Performance Analysis of Hybrid Desiccant Cooling System with Enhanced Dehumidification Capability Using TRNSYS |
| title_full_unstemmed | Performance Analysis of Hybrid Desiccant Cooling System with Enhanced Dehumidification Capability Using TRNSYS |
| title_short | Performance Analysis of Hybrid Desiccant Cooling System with Enhanced Dehumidification Capability Using TRNSYS |
| title_sort | performance analysis of hybrid desiccant cooling system with enhanced dehumidification capability using trnsys |
| topic | hybrid desiccant cooling system (HDCS) regeneration heat cooling capacity desiccant rotor coefficient of performance (COP) |
| url | https://www.mdpi.com/2076-3417/11/7/3236 |
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