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The Application of Open Capillary Modules for Sweeping Gas Membrane Distillation

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  • Marek Gryta

    (Faculty of Chemical Technology and Engineering, West Pomeranian University of Technology in Szczecin, ul. Pułaskiego 10, 70-322 Szczecin, Poland)

Abstract

The paper presents the sweeping gas membrane distillation realised by using the capillary module (length 1.1 m and area 0.1 m 2 ) without housing (module shell). During the tests, the feed was flowing inside the hydrophobic polypropylene membranes. The studies were performed for two variants of process: with pre-heating (313–330 K) and without heating of the feed (brines). Under low gas flow (0.005 m/s) the evaporation performance varied in the range of 0.15–0.25 L/m 2 h, depending on the relative humidity (42–63%) and the air temperature (293–300 K). The application of feed pre-heating to 330 K led to an increase in the evaporation performance to 2.4 L/m 2 h. The permeate flux increased by 60% when the air flow velocities between the capillaries increased to 1.8–2.5 m/s. Increasing the feed flow rate from 0.1 to 0.59 m/s led to increase the permeate flux about 20% for feed temperature 293–310 K, and over 55% for feed temperature higher than 323 K.

Suggested Citation

  • Marek Gryta, 2022. "The Application of Open Capillary Modules for Sweeping Gas Membrane Distillation," Energies, MDPI, vol. 15(4), pages 1-17, February.
    • Handle: RePEc:gam:jeners:v:15:y:2022:i:4:p:1454-:d:751115
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    References listed on IDEAS

    as
    1. Alessandra Criscuoli, 2021. "Thermal Performance of Integrated Direct Contact and Vacuum Membrane Distillation Units," Energies, MDPI, vol. 14(21), pages 1-11, November.
    2. Janajreh, Isam & Suwwan, Dana & Hashaikeh, Raed, 2017. "Assessment of direct contact membrane distillation under different configurations, velocities and membrane properties," Applied Energy, Elsevier, vol. 185(P2), pages 2058-2073.
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