A heat pump driven and hollow fiber membrane-based liquid desiccant air dehumidification system: Modeling and experimental validation
A heat pump driven and hollow fiber membrane-based liquid desiccant air dehumidification system: Modeling and experimental validation
复制标题
热泵驱动的基于中空纤维膜的液体干燥剂空气除湿系统：建模和实验验证
DOI：
10.1016/j.energy.2013.10.014
复制
发表时间：
2014-02-01
期刊：
影响因子：
9
通讯作者：
Zhang, Ning
中科院分区：
文献类型：
--
作者：
Zhang, Li-Zhi;Zhang, Ning
介绍了一种压缩热泵驱动膜基液体干燥剂空气除湿系统。除湿器和蓄热器由两个中空纤维膜束包裹在两个壳体中构成。水蒸气可以有效地渗透这些膜，而液体干燥剂液滴被阻止交叉。采用热泵系统实现盐溶液的同步加热和冷却，提高了能源效率。在本研究中，建立了该系统，并对系统进行了完整的建模。对膜组件中的传热传质过程以及蒸发器、冷凝器和其他关键部件进行了详细的建模。通过实验对整个模型进行了验证。对系统的除湿功率（SDP）、除湿效率、热泵能效比（EER）、性能系数（COP）等性能进行了数值和实验研究。结果表明，该模型能较准确地预测系统。系统除湿能力强，节能效果好。此外，即使在中国南方炎热潮湿的恶劣天气条件下，它也表现良好。(C) 2013 Elsevier Ltd.版权所有。
A compression heat pump driven and membrane-based liquid desiccant air dehumidification system is presented. The dehumidifier and the regenerator are made of two hollow fiber membrane bundles packed in two shells. Water vapor can permeate through these membranes effectively, while the liquid desiccant droplets are prevented from cross-over. Simultaneous heating and cooling of the salt solution are realized with a heat pump system to improve energy efficiency. In this research, the system is built up and a complete modeling is performed for the system. Heat and mass transfer processes in the membrane modules, as well as in the evaporator, the condenser, and other key components are modeled in detail. The whole model is validated by experiment. The performances of SDP (specific dehumidification power), dehumidification efficiency, EER (energy efficiency ratio) of heat pump, and the COP (coefficient of performance) of the system are investigated numerically and experimentally. The results show that the model can predict the system accurately. The dehumidification capabilities and the energy efficiencies of the system are high. Further, it performs well even under the harsh hot and humid South China weather conditions. (C) 2013 Elsevier Ltd. All rights reserved.