rdf-syntax-grammar
mods:
  schema location: http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-2.xsd
  title info:
    title: Experimental Investigation on the Characteristics of the Annular Type Composite Wick Heat Pipe
  name:
    name part: Kim, Daegeun
    role:
      role term: creator
    role:
      role term: author.
  name:
    name part: Hassan, Yassin
    role:
      role term: thesis advisor.
  name:
    name part: Texas A&M University
    role:
      role term: degree granting institution.
  type of resource: text
  genre: bibliography
  origin info:
    place:
      place term: txu
    date issued: 2023
    issuance: monographic
  language:
    language term: eng
  physical description:
    form: remote
    extent: 1 online resource.
  abstract: An experimental investigation was conducted on the hydraulic characteristics of annular type wick structures for heat pipes. An experimental facility that can measure porosity, permeability and effective pore radius of the wick structures in a vacuum condition is established. Nine different multi-layered (6 layers in total) composite screen meshes are characterized. Based on the measurement results, a wick structure composed of one layer of 100©₇100 mesh, three layers of 400©₇400 mesh, and two layers of 60©₇60 mesh is determined to have the highest permeability to effective pore radius ratio and was selected as a targeted sample. The wick-to-wall gap effect on the hydraulic characteristics of annular type wick structure is also investigated by measuring the permeability and effective pore radius of the sample wick structure with varying gap widths. The result shows that the permeability increases as the gap increases from 0 mm to 1.2 mm. After a peak at 1.2 mm, the permeability decreases as the gap increases and converges to the value of the case measured without a wall structure. The effective pore radius becomes smaller as the gap increases, making a peak at a gap size of 1.2 mm. This result implies that there is an optimal point in gap size which is determined to be 1.2 mm for the selected composite mesh structure. To describe and model the advantage of this gap, the rising of a wetting liquid in the gap between a vertical solid plate and a mesh (with a small angle between them) was experimentally measured and analyzed. An additional experiment was performed to investigate the effect of curvature on the capillary rise using tubes and meshes of varying radii. Resultantly, we confirmed that the linear combination of the contact angles of the solid plate and mesh could be applied to calculate the rising height from the Laplace⁰́₃Young equation. Furthermore, the effect of curvature on the rising height of the liquid was negligible. We observed that a gap distance of …
  note: by Daegeun Kim.
  note: "Major Subject: Nuclear Engineering"
  note: Includes vita.
  note: Master of Science Texas A&M University 2022 https://hdl.handle.net/1969.1/197851
  note: Includes bibliographical references.
  note: Text (Thesis)
  subject:
    topic: Major Nuclear Engineering
  subject:
    topic: Heat pipe
  subject:
    topic: Annular wick
  subject:
    topic: Porosity
  subject:
    topic: Permeability
  subject:
    topic: Effective pore radius
  subject:
    topic: Capillary rise
  subject:
    topic: Porous media
  subject:
    topic: Contact angle
  identifier: https://hdl.handle.net/1969.1/197851
  record info:
    record content source: TXA
    record creation date: 240823
    record change date: 20240829173507.8
    record identifier: in00005468450
    language of cataloging:
      language term: eng