Parametric Study of Counter Flow MEMS Heat Exchanger

Salman Hemayetuddin, Ahmed Abusultan, Ahmad Abdelrahman, Malick Omar, Issah Mohammad Ahmad Al Hamad, Fadi Alnaimat, Bobby Mathew

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

The influence of different geometric and operating parameters on the effectiveness of counter flow MEMS heat exchangers are studied in this article. The counter flow MEMS heat exchanger is modelled using ANSYS Workbench; only a repeating unit of the MEMS heat exchanger is studied for all cases. The mathematical model consists of the continuity equations, Navier-Stokes equations, and energy equations. The fluid considered for this study is water. The influence of hydraulic diameter, channel spacing, substrate thickness, structural material, and Reynolds number on the effectiveness of MEMS heat exchanger is studied. Studies are done for hot fluid Reynolds number varying between 50 and 500 while maintaining the heat capacity ratio at unity. The hydraulic diameters and channel spacing considered include 100 μm, 200 μm, and 300 μm while the substrate thickness of 250 μm, 500 μm, and 1000 μm are considered in this study The structural material considered for this study include silicon, stainless steel, and glass. The effectiveness is determined using the inlet and outlet temperatures of the fluids. It is found that the effectiveness of the MEMS heat exchanger reduces with increase in Reynolds number. Moreover, increase in hydraulic diameter, spacing and thickness of the MEMS heat exchanger reduces its effectiveness for a specific hot fluid Reynolds number.

Original languageEnglish
Title of host publication2021 6th International Conference on Renewable Energy
Subtitle of host publicationGeneration and Applications, ICREGA 2021
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages137-141
Number of pages5
ISBN (Electronic)9781728183015
DOIs
Publication statusPublished - Feb 2 2021
Event6th International Conference on Renewable Energy: Generation and Applications, ICREGA 2021 - Al Ain, United Arab Emirates
Duration: Feb 2 2021Feb 4 2021

Publication series

Name2021 6th International Conference on Renewable Energy: Generation and Applications, ICREGA 2021

Conference

Conference6th International Conference on Renewable Energy: Generation and Applications, ICREGA 2021
Country/TerritoryUnited Arab Emirates
CityAl Ain
Period2/2/212/4/21

Keywords

  • MEMS heat exchangers
  • counter flow
  • effectiveness
  • parametric study

ASJC Scopus subject areas

  • Energy Engineering and Power Technology
  • Renewable Energy, Sustainability and the Environment
  • Waste Management and Disposal

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