TY - GEN
T1 - HEAT TRANSFER IN MICROCHANNEL HEAT EXCHANGER WITH ENHANCED SURFACE STRUCTURE
AU - Alnaimat, Fadi
AU - Mathew, Bobby
AU - Al Nuaimi, Saeed
N1 - Funding Information:
The authors would like to express their appreciation to the United Arab Emirates University (UAEU) to facilitate the research. This research was funded by the United Arab Emirates University-National Water and Energy Center through Grants (31R153 and 12R127).
Publisher Copyright:
Copyright © 2022 by ASME.
PY - 2022
Y1 - 2022
N2 - A simulation-based study is carried out on a counter-flow minichannel heat exchangers with smooth and staggered pin-fins. The heat exchangers consist of two layers of hot and cold fluids. Each layer contained 10 minichannels with width of 2 mm and length of 100 mm; the height of the minichannel is 2 mm and the spacing between each minichannel is 0.5 mm. The heat exchanger is studied with water-water fluids. The investigation is carried out for different Reynolds numbers between 150 and 2000. The effectiveness is determined using the inlet and outlet temperatures of the fluids. Based on the investigation, it is observed that increasing Reynolds number decreases the effectiveness, and increases the overall heat transfer coefficient. It is also observed increasing Reynolds number decreases the friction factor. It was clearly observed that the heat transfer rate is higher for pin-fin minichannel compared to smooth channel. It is also noted that overall friction factor in pin-fin minichannel is higher than that in smooth channel.
AB - A simulation-based study is carried out on a counter-flow minichannel heat exchangers with smooth and staggered pin-fins. The heat exchangers consist of two layers of hot and cold fluids. Each layer contained 10 minichannels with width of 2 mm and length of 100 mm; the height of the minichannel is 2 mm and the spacing between each minichannel is 0.5 mm. The heat exchanger is studied with water-water fluids. The investigation is carried out for different Reynolds numbers between 150 and 2000. The effectiveness is determined using the inlet and outlet temperatures of the fluids. Based on the investigation, it is observed that increasing Reynolds number decreases the effectiveness, and increases the overall heat transfer coefficient. It is also observed increasing Reynolds number decreases the friction factor. It was clearly observed that the heat transfer rate is higher for pin-fin minichannel compared to smooth channel. It is also noted that overall friction factor in pin-fin minichannel is higher than that in smooth channel.
KW - heat exchanger
KW - heat transfer coefficient
KW - microchannel
KW - pressure drop
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U2 - 10.1115/IMECE2022-96942
DO - 10.1115/IMECE2022-96942
M3 - Conference contribution
AN - SCOPUS:85148487774
T3 - ASME International Mechanical Engineering Congress and Exposition, Proceedings (IMECE)
BT - Fluids Engineering; Heat Transfer and Thermal Engineering
PB - American Society of Mechanical Engineers (ASME)
T2 - ASME 2022 International Mechanical Engineering Congress and Exposition, IMECE 2022
Y2 - 30 October 2022 through 3 November 2022
ER -