A heat pump driven and hollow fiber membrane-based liquid desiccant air dehumidification system: A transient performance study

作者：Zhang, Ning; Zhang, Li-Zhi^*; Xu, Jian-Chang

来源：International Journal of Refrigeration, 2016, 67: 143-156.

DOI：10.1016/j.ijrefrig.2016.01.001

• Heat pump
• Hollow fiber membrane
• Liquid desiccant
• Air dehumidification system
• Transient performance

Heat pump driven and hollow fiber membrane based liquid desiccant systems have been adopted for air dehumidification because of their capabilities to prevent liquid desiccant droplets from crossing over into the process air and to achieve high energy efficiencies. Due to the transient operating conditions like load and weather conditions, a transient model for the novel system is proposed in this study. Based on experiments and model simulations, the transient behaviors of the system are analyzed both at the start-up and in the normal operation periods. It is found that the initial concentration of the liquid desiccant and the volume of solution stored in the container play key roles at the start-up period, while the initial temperature has less influences. Adjusting the compressor speed is a feasible way to track the load and weather fluctuations. The model developed in this work is necessary for the control and optimization of the air dehumidification technology.

• 出版日期2016-7
• 单位华南理工大学