Title page for etd-0715118-082448


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URN etd-0715118-082448
Author Jhen Lin
Author's Email Address No Public.
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Department Mechanical and Electro-Mechanical Engineering
Year 2017
Semester 2
Degree Master
Type of Document
Language English
Title Analysis of Flow Field and Heat Transfer Characteristics of Spray Cooling through A Twin-fluid Nozzle
Date of Defense 2018-07-10
Page Count 106
Keyword
  • Critical heat flux
  • Spray cooling
  • Twin-fluid nozzle
  • μPIV
  • IPI
  • Abstract This experiment mainly discusses the twin-fluid nozzle with the diameter of 1.6 mm by changing different experimental parameters, such as the spray height (H=40 mm, 50 mm, 60 mm), the mass ratio of air to liquid (R = 0.145, 0.194, 0.242, 0.259 , 0.323) and the surface temperature (Tw = 25 oC, 75 oC, 125 oC) to observe the flow field and temperature field.
    In the experiment, the heater system consisted of the copper block and heating rods, DI water is used as the working fluid. The velocity distribution is observed by μPIV and the dimension of the particle is observed by IPI; the temperature field measurements, using the thermocouple (K-Type) for the cooling experiment, calculate and analysis to obtain the optimal critical heat flux (CHF).
    The experimental results show the optimal critical heat flux and the smallest particle size occurs when the spray height of 50 mm and the gas-liquid ratio of 0.242.
    Advisory Committee
  • C.J. Ho - chair
  • Chao-Kuang Chen - co-chair
  • Ru Yang - advisor
  • Shou-Shing Hsieh - advisor
  • Files
  • etd-0715118-082448.pdf
  • Indicate in-campus at 3 year and off-campus access at 3 year.
    Date of Submission 2018-08-15

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