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首页> 外文期刊>Applied Energy >Performance study of a heat pump driven and hollow fiber membrane-based two-stage liquid desiccant air dehumidification system
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Performance study of a heat pump driven and hollow fiber membrane-based two-stage liquid desiccant air dehumidification system

机译：基于热泵驱动的中空纤维膜两级液体干燥剂空气除湿系统的性能研究

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摘要

A novel compression heat pump driven and hollow fiber membrane-based two-stage liquid desiccant air dehumidification system is presented. The liquid desiccant droplets are prevented from crossing over into the process air by the semi-permeable membranes. The isoenthalpic processes are changed to quasi isothermal processes by the two-stage dehumidification processes. The system is set up and a model is proposed for simulation. Heat and mass capacities in the system, including the membrane modules, the condenser, the evaporator and the heat exchangers are modeled in detail. The model is also validated experimentally. Compared with a single-stage dehumidification system, the two-stage system has a lower solution concentration exiting from the dehumidifier and a lower condensing temperature. Thus, a better thermodynamic system performance is realized and the COP can be increased by about 20% under the typical hot and humid conditions in Southern China. The allocations of heat and mass transfer areas in the system are also investigated. It is found that the optimal regeneration to dehumidification area ratio is 1.33. The optimal first to second stage dehumidification area ratio is 1.4; and the optimal first to second stage regeneration area ratio is 1.286. (C) 2016 Elsevier Ltd. All rights reserved.
机译：提出了一种新型的压缩热泵驱动的基于中空纤维膜的两级液体干燥剂空气除湿系统。半透膜防止了液体干燥剂液滴进入工艺空气。通过两级除湿过程，等焓过程变为准等温过程。建立了系统并提出了仿真模型。详细模拟了系统中的热量和质量容量，包括膜模块，冷凝器，蒸发器和热交换器。该模型还通过实验验证。与单级除湿系统相比，两级系统从除湿机出来的溶液浓度较低，冷凝温度较低。因此，在中国南方典型的湿热条件下，可以实现更好的热力学系统性能，并且COP可以提高约20％。还研究了系统中传热和传质区域的分配。发现最佳再生与除湿面积比为1.33。第一至第二阶段的最佳除湿面积比为1.4；第一和第二阶段的最佳再生面积比为1.286。 （C）2016 Elsevier Ltd.保留所有权利。

著录项

  • 来源
    《Applied Energy》 |2016年第1期|727-737|共11页
  • 作者

    Zhang Ning; Yin Shao-You; Zhang Li-Zhi;

  • 作者单位

    South China Univ Technol, Sch Chem & Chem Engn, Educ Minist, Key Lab Enhanced Heat Transfer & Energy Conservat, Guangzhou 510640, Guangdong, Peoples R China;

    Shunde Polytech, Heat Pump Engn & Technol Dev Ctr Guangdong Univ, Foshan 528333, Peoples R China;

    South China Univ Technol, Sch Chem & Chem Engn, Educ Minist, Key Lab Enhanced Heat Transfer & Energy Conservat, Guangzhou 510640, Guangdong, Peoples R China|South China Univ Technol, State Key Lab Subtrop Bldg Sci, Guangzhou 510640, Guangdong, Peoples R China;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    Heat pump; Hollow fiber membrane; Liquid desiccant; Two-stage; System performance;

    机译：热泵;中空纤维膜;液体干燥剂;两级;系统性能;

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