Performance analysis of a new desiccant pre-treatment electrodialysis regeneration system for liquid desiccant
Performance analysis of a new desiccant pre-treatment electrodialysis regeneration system for liquid desiccant
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DOI：
10.1016/j.enbuild.2013.07.034
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发表时间：
2013-11
影响因子：
6.7
通讯作者：
Qing Cheng;Xiao-song Zhang;Xiu-wei Li
中科院分区：
文献类型：
--
作者：
Qing Cheng;Xiao-song Zhang;Xiu-wei Li
液体干燥剂空调系统是一种具有良好节能潜力的新型空调系统。太阳能热能作为一种可再生能源，可用于LDAS干燥剂的再生。太阳能再生系统的一个问题是太阳能会根据天气情况而变化，这意味着太阳能再生系统不能一直满足除湿要求。为了提高LDAS太阳能干燥剂预处理电渗析（ED）再生系统的可靠性和性能，提出了一种新的干燥剂预处理电渗析（ED）再生系统。该系统充分利用太阳能，在可变工况下也能可靠工作。此外，新系统可用于工业空调需要的深度除湿领域。对新系统、太阳能TH再生系统和PV-ED再生系统进行了分析，结果表明，在理想运行条件下，新系统的节能效果优于其他系统。在所有因素中，影响最大的是ED再生器浓缩池入口干燥剂浓度，新系统应尽可能在理想的运行条件下运行。
Liquid desiccant air-conditioning system (LDAS) is a novel air-conditioner with good energy saving potential. As a renewable energy, solar thermal energy (TH) can be used to regenerate desiccant for LDAS. One problem of the solar regeneration system is that solar energy will depend on weather conditions, which means that the solar regeneration system cannot meet the dehumidification requirements all the time. In this paper, a new desiccant pre-treatment electrodialysis (ED) regeneration system is proposed in order to improve the reliability and the performance of solar desiccant regeneration system for LDAS. The new system makes comprehensively use of solar energy and can work reliably under the variable conditions. Moreover, the new system can be used in the deep dehumidification field, which is required in industrial air-conditioning. Analysis of the new system, the solar TH regeneration system and the PV-ED regeneration system is made and the results reveal that the new system will be more energy efficient than others under the ideal operational condition. Among all factors, the most influential one is the concentration of desiccant at the entrance of concentrate cells in the ED regenerator, and the new system should be running under the ideal operational condition as possible.