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mods:
  schema location: http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-2.xsd
  title info:
    title: Thermal analysis of thermosyphon (HVAC)) systems using different refrigerants
  name:
    name part: Rajeanderan Revichandran
    role:
      role term: creator
    role:
      role term: author
  name:
    name part: International Islamic University Malaysia
    name part: Department of Mechanical Engineering
  genre: Theses, IIUM local
  origin info:
    place:
      place term: my
    date issued: 2019
  language:
    language term: eng
  physical description:
    extent: xviii, 120 leaves : colour illustrations ; 30cm.
  abstract: Most of the comparison studies that carried out on thermosyphon are focused on different parameters and factors that affect the thermosyphon performance thus to identify the most efficient system. Therefore, less attention was given towards comparison of the different structures of thermosyphon. Hence, this research sought to compare and identify the best performing thermosyphon structure among Straight shape, C-shape and Close looped system in terms of thermal performance when subjected to different factors namely fill ratio and inclination angle by using R410A as working fluid. Another primary focus of this research was to address the ability of the best performing thermosyphon structure in real life situation and its ability to reheat the air and prevent excessive dehumidification by using different refrigerants namely R410A, R32 and R134a. The thermal performances of R410A filled thermosyphon subjected to low heat flux from 1200W/m2 to 5000W/m2 and evaporator wall temperatures between 20 °C and 50 °C with fill ratios 1.00 and 0.75 and at different inclinations of 45°, 68° and 90° were investigated by using Straight shape, C-shape and Close looped thermosyphon. The performance of the thermosyphon which is determined from its heat transfer capability was found to be dependent on inclination angle and fill ratio. Experimental result shows that heat transfer coefficient increases as the heat input increases, while thermal resistance decreases exponentially with increasing input power for all three structures. Change in fill ratio and inclination angle at various heat input contributed to a better thermosyphon performance. From the investigated experimental set up, heat transfer was highest for fill ratio 1.00 and inclination angle of 68° compared to inclination angles of 45° and 90° for all three investigated structures. Straight shape thermosyphon observed to have better overall heat transfer and smaller thermal resistance compare to C-shape and Close loop thermosy…
  note: by Rajeanderan Revichandran
  note: Thesis (MSME)--International Islamic University Malaysia, 2018.
  note: Includes bibliographical references (leaves 111-115).
  subject:
    geographic code: a-my---
  identifier: https://lib.iium.edu.my/mom/services/mom/document/getFile/7wUjLv5XC9K2qTovhAHyqgUJ2ez1vkyQ20200207115219556
  record info:
    record content source: UIAM
    record creation date: 190515
    language of cataloging:
      language term: eng