Investigation of heat and mass transfer characteristics during energy discharge in an energy storage unit using hollow fiber membranes. (February 2018)

• Record Type: Journal Article
• Authors: Wang, Dechang; Liu, Zhen; Zhang, Shaohong; Tian, Xiaoliang; Li, Yanhui
• Is Part Of: International journal of heat and mass transfer. Volume 117(2018)
• Page Start: 559
• Page End: 570
• Publication Date: 2018-02
• Subjects: Membrane energy accumulator -- Heat and mass transfer -- Hollow fiber membrane -- Crystallization; Heat -- Transmission -- Periodicals; Mass transfer -- Periodicals; Chaleur -- Transmission -- Périodiques; Transfert de masse -- Périodiques; Electronic journals; 621.4022
• DOI: 10.1016/j.ijheatmasstransfer.2017.09.125
• Languages: English
• ISSNs: 0017-9310

Abstract

Graphical abstract: Schematic diagram of MEA. Highlights: A novel hollow fibrous MEA was designed and investigated. A mathematical model of the heat and mass transfer was build and validated. The heat and mass transfer characteristics in the MEA were analyzed. The energy storage capacity would increase by at least 25%. The higher A s and A f could enhance mass and heat transfer. Abstract: A novel concentration difference energy accumulator was evaluated. This accumulator was framed by hollow fiber membranes as the water vapor transfer channels. This was the membrane energy accumulator (MEA). A mathematical model was created to simulate the heat and mass transfer in the crystal dissolving process of the energy discharging stage. In addition, the model was experimentally validated. Based on the simulation results, the heat and mass transfer characteristics of the MEA in the crystal dissolving process were analyzed. The results of the simulation and experiments proved the feasibility of the MEA. The energy storage capacity of the MEA was a minimum of 25% greater than that of a traditional concentration difference energy accumulator. The effectiveness of the MEA was confirmed.