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      A New Approach to Delay or Prevent Frost Formation in Membranes

      1 , 1 , 1
      Journal of Heat Transfer
      ASME International

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          Abstract

          Saturation of the water vapor is essential to form frost inside a permeable membrane. The main goal of this paper is to develop a numerical model that can predict temperature and humidity inside a membrane in order to show the location and time of saturation. This numerical model for heat and mass transfer is developed to show that frost formation may be prevented or delayed by controlling the moisture transfer through the membrane, which is the new approach in this paper. The idea is to simultaneously dry and cool air to avoid saturation conditions and thereby eliminate condensation and frosting in the membrane. Results show that saturation usually occurs on side of the membrane with the highest temperature and humidity. The numerical model is verified with experimental data and used to show that moisture transfer through the membrane can delay or prevent frost formation.

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          Liquid-infused nanostructured surfaces with extreme anti-ice and anti-frost performance.

          Ice-repellent coatings can have significant impact on global energy savings and improving safety in many infrastructures, transportation, and cooling systems. Recent efforts for developing ice-phobic surfaces have been mostly devoted to utilizing lotus-leaf-inspired superhydrophobic surfaces, yet these surfaces fail in high-humidity conditions due to water condensation and frost formation and even lead to increased ice adhesion due to a large surface area. We report a radically different type of ice-repellent material based on slippery, liquid-infused porous surfaces (SLIPS), where a stable, ultrasmooth, low-hysteresis lubricant overlayer is maintained by infusing a water-immiscible liquid into a nanostructured surface chemically functionalized to have a high affinity to the infiltrated liquid and lock it in place. We develop a direct fabrication method of SLIPS on industrially relevant metals, particularly aluminum, one of the most widely used lightweight structural materials. We demonstrate that SLIPS-coated Al surfaces not only suppress ice/frost accretion by effectively removing condensed moisture but also exhibit at least an order of magnitude lower ice adhesion than state-of-the-art materials. On the basis of a theoretical analysis followed by extensive icing/deicing experiments, we discuss special advantages of SLIPS as ice-repellent surfaces: highly reduced sliding droplet sizes resulting from the extremely low contact angle hysteresis. We show that our surfaces remain essentially frost-free in which any conventional materials accumulate ice. These results indicate that SLIPS is a promising candidate for developing robust anti-icing materials for broad applications, such as refrigeration, aviation, roofs, wires, outdoor signs, railings, and wind turbines.
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            Anti-icing and de-icing techniques for wind turbines: Critical review

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              • Record: found
              • Abstract: not found
              • Article: not found

              Challenges and trends in membrane technology implementation for produced water treatment: A review

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                Author and article information

                Journal
                Journal of Heat Transfer
                ASME International
                0022-1481
                1528-8943
                January 01 2019
                January 01 2019
                November 16 2018
                : 141
                : 1
                Affiliations
                [1 ]Mechanical Engineering Department, University of Saskatchewan, 57 Campus Dr, Saskatoon, SK S7N 5A9, Canada e-mail:
                Article
                10.1115/1.4041557
                b1f27068-d234-4d9d-809f-1a617ae3bf6b
                © 2018
                History

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