Thermodynamic performance assessment of vacuum membrane-based dehumidification and air carrying energy radiant air-conditioning system (VMD-ACERS)

doi:10.1016/j.cjche.2020.11.022

中国化学工程学报 ›› 2021, Vol. 34 ›› Issue (6): 217-227.DOI: 10.1016/j.cjche.2020.11.022

• Energy Science and Technology • 上一篇下一篇

Thermodynamic performance assessment of vacuum membrane-based dehumidification and air carrying energy radiant air-conditioning system (VMD-ACERS)

Liang Chun, Guangcai Gong, Xi Fang, Pei Peng

Key Laboratory of Building Safety and Energy Efficiency Ministry of Education College of Civil Engineering, Hunan University, Changsha 410082, China

收稿日期:2020-08-03 修回日期:2020-10-10 出版日期:2021-06-28 发布日期:2021-08-30
通讯作者: Guangcai Gong
基金资助:
The National Key Technology Support Program (2015BAJ03B01) and the Hunan Provincial Innovation Foundation for Postgraduate Studies (CX20190287) provided financial assistance for this study.

Thermodynamic performance assessment of vacuum membrane-based dehumidification and air carrying energy radiant air-conditioning system (VMD-ACERS)

Liang Chun, Guangcai Gong, Xi Fang, Pei Peng

Key Laboratory of Building Safety and Energy Efficiency Ministry of Education College of Civil Engineering, Hunan University, Changsha 410082, China

Received:2020-08-03 Revised:2020-10-10 Online:2021-06-28 Published:2021-08-30
Contact: Guangcai Gong
Supported by:
The National Key Technology Support Program (2015BAJ03B01) and the Hunan Provincial Innovation Foundation for Postgraduate Studies (CX20190287) provided financial assistance for this study.

摘要/Abstract

摘要： Temperature and humidity independent control (THIC) air-conditioning system is a promising technology. In this work, a novel temperature and humidity independent control (THIC) system is proposed, namely VMD-ACERS, which integrates vacuum membrane-based dehumidification and air carrying energy radiant air-conditioning system. This work establishes a novel coefficient of performance (COP) model of VMD-ACERS. The main parameters affecting the COP of conventional fan coil unit cooling system (FCUCS) and VMD-ACERS are investigated. The performance of FCUCS and VMD-ACERS are compared, and the energy-saving potential of VMD-ACERS is proved. Results indicate that, for FCUCS, the importance ranking of parameters is basically stable. However, for VMD-ACERS, the importance ranking will be affected by FCU and refrigerant. The most important parameters of VMD-ACERS are condensation temperature and permeate side pressure. On the contrary, superheating, subcooling are relatively less important parameters. For VMD-ACERS, it is not necessary to pursue the membrane with very high selectivity, because the selectivity of membrane would also be a less important parameter when it reaches 500. The COP of VMD-ACERS is higher than that of FCUCS when the permeate side pressure is higher than 8 kPa. The VMD-ACERS solves two technical problems about power-saving and thermal comfort of conventional THIC, and can extend the application of THIC air-conditioning system.

关键词: Fan coil unit cooling system, Temperature and humidity independent, control, ACERS, Vacuum membrane-based dehumidification, COP

Abstract: Temperature and humidity independent control (THIC) air-conditioning system is a promising technology. In this work, a novel temperature and humidity independent control (THIC) system is proposed, namely VMD-ACERS, which integrates vacuum membrane-based dehumidification and air carrying energy radiant air-conditioning system. This work establishes a novel coefficient of performance (COP) model of VMD-ACERS. The main parameters affecting the COP of conventional fan coil unit cooling system (FCUCS) and VMD-ACERS are investigated. The performance of FCUCS and VMD-ACERS are compared, and the energy-saving potential of VMD-ACERS is proved. Results indicate that, for FCUCS, the importance ranking of parameters is basically stable. However, for VMD-ACERS, the importance ranking will be affected by FCU and refrigerant. The most important parameters of VMD-ACERS are condensation temperature and permeate side pressure. On the contrary, superheating, subcooling are relatively less important parameters. For VMD-ACERS, it is not necessary to pursue the membrane with very high selectivity, because the selectivity of membrane would also be a less important parameter when it reaches 500. The COP of VMD-ACERS is higher than that of FCUCS when the permeate side pressure is higher than 8 kPa. The VMD-ACERS solves two technical problems about power-saving and thermal comfort of conventional THIC, and can extend the application of THIC air-conditioning system.

Key words: Fan coil unit cooling system, Temperature and humidity independent, control, ACERS, Vacuum membrane-based dehumidification, COP

Liang Chun, Guangcai Gong, Xi Fang, Pei Peng. Thermodynamic performance assessment of vacuum membrane-based dehumidification and air carrying energy radiant air-conditioning system (VMD-ACERS)[J]. 中国化学工程学报, 2021, 34(6): 217-227.

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Thermodynamic performance assessment of vacuum membrane-based dehumidification and air carrying energy radiant air-conditioning system (VMD-ACERS)

Thermodynamic performance assessment of vacuum membrane-based dehumidification and air carrying energy radiant air-conditioning system (VMD-ACERS)

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