Enhanced performance of a direct contact membrane distillation (DCMD) system with a Ti/MgF2 solar absorber under actual weather environments

Jaewon Shin; Hye Jin Lee; Byung Min An; Junki Kim; Jinsoo Cho; Dasom Wang; Kyung Guen Song; Won Jun Choi; Jeong Min Baik; Seungkwan Hong

doi:10.1016/j.desal.2020.114580

Enhanced performance of a direct contact membrane distillation (DCMD) system with a Ti/MgF₂ solar absorber under actual weather environments

Jaewon Shin, Hye Jin Lee, Byung Min An, Junki Kim, Jinsoo Cho, Dasom Wang, Kyung Guen Song, Won Jun Choi, Jeong Min Baik, Seungkwan Hong

School of Civil, Environmental and Architectural Engineering

Research output: Contribution to journal › Article

Abstract

In this study, we report on a solar membrane distillation (MD) system with a 5-stack Ti/MgF₂ solar absorber adapted as a heat source under actual weather conditions. The 5-stack Ti/MgF₂ solar absorber showed light absorption of 85% over the wavelength range from 0.3 to 2.5 μm. This consequently induced greater heat and a two-fold greater water heating capability up to 80 °C for water in a closed water tank without insulation under a 1-sun illumination. The enhanced solar absorption of the Ti/MgF₂ solar absorber showed a 12% improvement in permeate flux of the integrated MD system compared with a system without a solar absorber. Under actual weather conditions, the solar DCMD system with the Ti/MgF₂ solar absorber successfully produced distillate water in the range of 0.51–4.78 L/m²·day depending on weather conditions. Despite unfavorable solar irradiance conditions in autumn, the integrated DCMD system with the Ti/MgF₂ solar absorber proved superior to a conventional commercial evacuated-tube solar collector in terms of daily production of distillate water and solar energy requirements for certain amounts of distillate.

Original language	English
Article number	114580
Journal	Desalination
Volume	491
DOIs	https://doi.org/10.1016/j.desal.2020.114580
Publication status	Published - 2020 Oct 1

Keywords

Decentralized water supply
Desalination
Enhanced light absorption
Membrane distillation
Solar absorber

ASJC Scopus subject areas

Chemistry(all)
Chemical Engineering(all)
Materials Science(all)
Water Science and Technology
Mechanical Engineering

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Shin, J., Lee, H. J., An, B. M., Kim, J., Cho, J., Wang, D., Song, K. G., Choi, W. J., Baik, J. M., & Hong, S. (2020). Enhanced performance of a direct contact membrane distillation (DCMD) system with a Ti/MgF₂ solar absorber under actual weather environments. Desalination, 491, [114580]. https://doi.org/10.1016/j.desal.2020.114580

Enhanced performance of a direct contact membrane distillation (DCMD) system with a Ti/MgF₂ solar absorber under actual weather environments. / Shin, Jaewon; Lee, Hye Jin; An, Byung Min; Kim, Junki; Cho, Jinsoo; Wang, Dasom; Song, Kyung Guen; Choi, Won Jun; Baik, Jeong Min; Hong, Seungkwan.

In: Desalination, Vol. 491, 114580, 01.10.2020.

Research output: Contribution to journal › Article

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