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Light transfer through semi-transparent glass panes supporting pendant droplets

Simsek, Eylul; Zhu, Keyong; Kashanchi, Glareh N.; Williams, Megan J.; Galy, Tiphaine; Marszewski, Michal; Tolbert, Sarah H.; Pilon, Laurent


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  <identifier identifierType="URL">https://aperta.ulakbim.gov.tr/record/238236</identifier>
  <creators>
    <creator>
      <creatorName>Simsek, Eylul</creatorName>
      <givenName>Eylul</givenName>
      <familyName>Simsek</familyName>
      <affiliation>Univ Calif Los Angeles, Mech &amp; Aerosp Engn Dept, Los Angeles, CA 90095 USA</affiliation>
    </creator>
    <creator>
      <creatorName>Zhu, Keyong</creatorName>
      <givenName>Keyong</givenName>
      <familyName>Zhu</familyName>
      <affiliation>Beihang Univ, Sch Aeronaut Sci &amp; Engn, Beijing 100191, Peoples R China</affiliation>
    </creator>
    <creator>
      <creatorName>Kashanchi, Glareh N.</creatorName>
      <givenName>Glareh N.</givenName>
      <familyName>Kashanchi</familyName>
      <affiliation>Univ Calif Los Angeles, Dept Chem, Los Angeles, CA 90095 USA</affiliation>
    </creator>
    <creator>
      <creatorName>Williams, Megan J.</creatorName>
      <givenName>Megan J.</givenName>
      <familyName>Williams</familyName>
      <affiliation>Univ Calif Los Angeles, Mech &amp; Aerosp Engn Dept, Los Angeles, CA 90095 USA</affiliation>
    </creator>
    <creator>
      <creatorName>Galy, Tiphaine</creatorName>
      <givenName>Tiphaine</givenName>
      <familyName>Galy</familyName>
      <affiliation>Univ Calif Los Angeles, Mech &amp; Aerosp Engn Dept, Los Angeles, CA 90095 USA</affiliation>
    </creator>
    <creator>
      <creatorName>Marszewski, Michal</creatorName>
      <givenName>Michal</givenName>
      <familyName>Marszewski</familyName>
      <affiliation>Univ Calif Los Angeles, Mech &amp; Aerosp Engn Dept, Los Angeles, CA 90095 USA</affiliation>
    </creator>
    <creator>
      <creatorName>Tolbert, Sarah H.</creatorName>
      <givenName>Sarah H.</givenName>
      <familyName>Tolbert</familyName>
    </creator>
    <creator>
      <creatorName>Pilon, Laurent</creatorName>
      <givenName>Laurent</givenName>
      <familyName>Pilon</familyName>
    </creator>
  </creators>
  <titles>
    <title>Light Transfer Through Semi-Transparent Glass Panes Supporting Pendant Droplets</title>
  </titles>
  <publisher>Aperta</publisher>
  <publicationYear>2021</publicationYear>
  <dates>
    <date dateType="Issued">2021-01-01</date>
  </dates>
  <resourceType resourceTypeGeneral="Text">Journal article</resourceType>
  <alternateIdentifiers>
    <alternateIdentifier alternateIdentifierType="url">https://aperta.ulakbim.gov.tr/record/238236</alternateIdentifier>
  </alternateIdentifiers>
  <relatedIdentifiers>
    <relatedIdentifier relatedIdentifierType="DOI" relationType="IsIdenticalTo">10.1016/j.jqsrt.2020.107493</relatedIdentifier>
  </relatedIdentifiers>
  <rightsList>
    <rights rightsURI="http://www.opendefinition.org/licenses/cc-by">Creative Commons Attribution</rights>
    <rights rightsURI="info:eu-repo/semantics/openAccess">Open Access</rights>
  </rightsList>
  <descriptions>
    <description descriptionType="Abstract">This paper quantifies experimentally the effect of pendant droplets condensed on the back of semitransparent glass panes on their normal-hemispherical transmittance and reflectance in the visible and near-infrared. To enable sample characterization and ensure repeatability, acrylic droplets were deposited on the back side of 3 mm-thick soda-lime silicate glass slabs with or without hydrophobic surface treatment including perfluorinated silane, perfluorinated silane-coated silica nanoparticle monolayer, or Teflon coatings. The droplet contact angle.c was varied between 26 degrees and 76 degrees and the projected surface area coverage reached up to 60%. For contact angle theta(c) smaller than the critical angle.cr for total internal reflection at the droplet/air interface, the presence of droplets did not significantly affect the normalhemispherical transmittance and reflectance. However, for droplet contact angle theta(cr) = theta(c) &amp;lt; 90 degrees, the normal-hemispherical transmittance decreased significantly with increasing droplet contact angle and/or surface area coverage while the normal-hemispherical reflectance increased. The measurements of the normal-hemispherical transmittance were in excellent agreement with numerical predictions obtained from Monte Carlo Ray Tracing method. These results further validate our previous numerical simulations and the different optical regimes identified. The results of this study can provide guidelines for the design and operation of energy efficient flat-plate solar collectors, outdoor photobioreactors, greenhouses, solar desalination systems, and other solar energy conversion systems. (c) 2020 Elsevier Ltd. All rights reserved.</description>
  </descriptions>
</resource>
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