Iranian Journal of Mechanical Engineering Transactions of ISME

Iranian Journal of Mechanical Engineering Transactions of ISME

Numerical study of the performance of energy recovery ventilation systems with a new membrane shape coupled with heat and mass transfer

Authors
Mohammad Jafaizaveh 1
Ali Khaleghi 2
Mashallah Rezakazemi 3
1 Shahrood University of Technology
2 Energy Conversion, Faculty of Mechanic & Mechatronic Engineeing, Shahrood University of Technology, Shahrood, IRAN
3 Assistant Professor, Faculty of Chemical and Materials Engineering, Shahrood University of Technology, Shahrood, Iran
Abstract
Air-conditioning is used in many commercial buildings and houses today and the energy required for the air conditioning system can be very high in extreme conditions. In this paper, for the purpose of intensifying heat and mass transfer and reducing the pressure drop, new structures for the membrane of these converters have been used; these structures include a curved membrane with a semicircular profile and a curved membrane with convex surfaces. This paper analyzes the numerical study of new membrane such as curvature and circular, using COMSOL Multiphysics. Modeling involves the transfer of heat and mass for turbulent flow. The pressure drop, the average Nsult number and Sherwood calculated and correlated with different reynolds. The results of this study show that the curved membrane with a semicircular profile increases the heat and mass transfer by about 7% and 6%, and the curved membrane improves the pressure drop by about 50% compared to the triangular heat exchanger.
Keywords
Heat exchanger
heat and mass transfer
membrane
turbulence
pressure loss
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Iranian Journal of Mechanical Engineering Transactions of ISME
Volume 21, Issue 2 - Serial Number 55
Fluid Mechanics and Heat Transfer
Spring 2019
Pages 200-224

  • Receive Date 29 January 2019
  • Revise Date 28 May 2019
  • Accept Date 05 November 2019