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Article

Performance Analysis of Hybrid Desiccant Cooling System with Enhanced Dehumidification Capability Using TRNSYS

by 1 and 2,*
1
Department of Mechanical Engineering, Graduate School, Kookmin University, Seoul 02707, Korea
2
School of Mechanical Engineering, Kookmin University, Seoul 02707, Korea
*
Author to whom correspondence should be addressed.
Academic Editors: Xiaolin Wang and Paride Gullo
Appl. Sci. 2021, 11(7), 3236; https://doi.org/10.3390/app11073236
Received: 20 February 2021 / Revised: 21 March 2021 / Accepted: 27 March 2021 / Published: 4 April 2021
(This article belongs to the Special Issue Sciences and Innovations in Heat Pump/Refrigeration: Volume II)
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. View Full-Text
Keywords: hybrid desiccant cooling system (HDCS); regeneration heat; cooling capacity; desiccant rotor; coefficient of performance (COP) hybrid desiccant cooling system (HDCS); regeneration heat; cooling capacity; desiccant rotor; coefficient of performance (COP)
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MDPI and ACS Style

Kim, J.H.; Ahn, J. Performance Analysis of Hybrid Desiccant Cooling System with Enhanced Dehumidification Capability Using TRNSYS. Appl. Sci. 2021, 11, 3236. https://doi.org/10.3390/app11073236

AMA Style

Kim JH, Ahn J. Performance Analysis of Hybrid Desiccant Cooling System with Enhanced Dehumidification Capability Using TRNSYS. Applied Sciences. 2021; 11(7):3236. https://doi.org/10.3390/app11073236

Chicago/Turabian Style

Kim, Ji H., and Joon Ahn. 2021. "Performance Analysis of Hybrid Desiccant Cooling System with Enhanced Dehumidification Capability Using TRNSYS" Applied Sciences 11, no. 7: 3236. https://doi.org/10.3390/app11073236

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