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

Research output: Contribution to journalArticlepeer-review

10 Citations (Scopus)

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 languageEnglish
Article number114580
JournalDesalination
Volume491
DOIs
Publication statusPublished - 2020 Oct 1

Bibliographical note

Funding Information:
This research was supported by a grant (code 18CTAP-C116746-02 ) from Korea Agency for Infrastructure Technology Advancement funded by Ministry of Land, Infrastructure and Transport of Korean Government and partially by the Technology development Program of MSS ( S2717300 ).

Publisher Copyright:
© 2020 Elsevier B.V.

Keywords

  • Decentralized water supply
  • Desalination
  • Enhanced light absorption
  • Membrane distillation
  • Solar absorber

ASJC Scopus subject areas

  • General Chemistry
  • General Chemical Engineering
  • General Materials Science
  • Water Science and Technology
  • Mechanical Engineering

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