Experimental Performance Evaluation of an Integrated, LCPV/T Membrane Distillation System for Electricity and Seawater Desalination

Shengwei Huang, Zhenghao Liu, Yong Zhang, Dan Su, Dongqi Sun and Chao Cheng ()
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Shengwei Huang: Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of Sciences, Beijing 100101, China
Zhenghao Liu: Energy Research Institute of National Development and Reform Commission, Beijing 100038, China
Yong Zhang: School of Energy, Power and Mechanical Engineering, North China Electric Power University, Beijing 102206, China
Dan Su: Beijing Science and Technology Innovation Research Center, Beijing 101117, China
Dongqi Sun: Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of Sciences, Beijing 100101, China
Chao Cheng: School of Energy, Power and Mechanical Engineering, North China Electric Power University, Beijing 102206, China

Energies, 2022, vol. 15, issue 24, 1-18

Abstract: In this paper, an integrated system based on low-concentrated photovoltaic/thermal (LCPV/T) technology and efficient vacuum membrane distillation (VMD) seawater desalination utilizing the energy of solar is established. Through a theoretical analysis and a series of experiments, this paper explores the temperature change of a single VMD process, and the variation trend of single-day membrane flux with solar irradiation and temperature parameters. In addition, the changes in solar irradiation, temperatures of the integrated system, membrane flux, and thermoelectric properties in different seasons are also analyzed. A mathematical model was established to calculate the relationship between membrane flux and temperature difference. The experimental results show that the membrane flux of VMD is 2.73 L/(m 2 ·h); the simulated seawater can achieve a desalination rate of 99.9%. After economic analysis, the operating incomes of the system under sunny weather conditions in different seasons were all positive.

Keywords: desalination; membrane flux; vacuum membrane distillation; PV/T; cogeneration system; heat utilization (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2022
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