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Thermal Performance of a Fin Operating Under Dehumidifying Operating Conditions

[+] Author Affiliations
Sulaman Pashah

King Fahd University of Petroleum and Minerals, Dhahran, Saudi Arabia

Paper No. IMECE2016-67260, pp. V008T10A076; 8 pages
doi:10.1115/IMECE2016-67260
From:
  • ASME 2016 International Mechanical Engineering Congress and Exposition
  • Volume 8: Heat Transfer and Thermal Engineering
  • Phoenix, Arizona, USA, November 11–17, 2016
  • Conference Sponsors: ASME
  • ISBN: 978-0-7918-5062-6
  • Copyright © 2016 by ASME

abstract

The use of extended surfaces or fins is very common for enhancing the heat transfer between a prime surfaces and surrounding environment. The applications cover both scenarios where the prime surface is either at a higher or at a lower temperature than the surrounding environment. In the first case, only sensible heat transfer occurs whereas the latter is typical for refrigeration and air conditioning applications where both sensible and latent heat transfer occur.

The performance of a fin is well described through a dimensionless parameter called fin efficiency. The efficiency is represented graphically in form of charts as a function of another dimensionless parameter called the fin parameter. The objective of the dimensionless presentation is that it provides the solution to a class of problems. However, this is true only for the dry fins because such charts for wet fins are for a set of particular operating conditions (i.e. temperature and psychrometric data). Thus, a separate chart is required if operating conditions are changed. The objective of present study is to investigate the possibility of developing the fin efficiency charts in the form which are independent of the operating conditions, thus a single chart covering all possible operating conditions. The finite element formulation is used to account for the actual nonlinear psychrometric relationships.

Copyright © 2016 by ASME

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