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Journal of Enhanced Heat Transfer

Publication de 8  numéros par an

ISSN Imprimer: 1065-5131

ISSN En ligne: 1563-5074

The Impact Factor measures the average number of citations received in a particular year by papers published in the journal during the two preceding years. 2017 Journal Citation Reports (Clarivate Analytics, 2018) IF: 2.3 To calculate the five year Impact Factor, citations are counted in 2017 to the previous five years and divided by the source items published in the previous five years. 2017 Journal Citation Reports (Clarivate Analytics, 2018) 5-Year IF: 1.8 The Immediacy Index is the average number of times an article is cited in the year it is published. The journal Immediacy Index indicates how quickly articles in a journal are cited. Immediacy Index: 0.2 The Eigenfactor score, developed by Jevin West and Carl Bergstrom at the University of Washington, is a rating of the total importance of a scientific journal. Journals are rated according to the number of incoming citations, with citations from highly ranked journals weighted to make a larger contribution to the eigenfactor than those from poorly ranked journals. Eigenfactor: 0.00037 The Journal Citation Indicator (JCI) is a single measurement of the field-normalized citation impact of journals in the Web of Science Core Collection across disciplines. The key words here are that the metric is normalized and cross-disciplinary. JCI: 0.6 SJR: 0.433 SNIP: 0.593 CiteScore™:: 4.3 H-Index: 35

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EXPERIMENTAL INVESTIGATIONS ON THE COOLING PERFORMANCE OF MICROCHANNELS USING ALUMINA NANOFLUIDS WITH DIFFERENT BASE FLUIDS

Volume 25, Numéro 3, 2018, pp. 283-291
DOI: 10.1615/JEnhHeatTransf.2018026139
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RÉSUMÉ

The cooling performance of a microchannel heat sink is experimentally examined with nanofluids as coolants. The heat sink, with 21 parallel microchannels, was fabricated on an aluminum substrate with a hydraulic diameter of 444 μm and aspect ratio of 8. The microchannels were fabricated using an electric discharge machine, and further fluid flow was through the inlet and outlet manifolds of the test section. The present work used alumina nanofluids, which were prepared using a two step method by dispersing the alumina nanoparticles into the base fluids at different nanoparticle concentrations of 0.1–1 vol.%. Different base fluids such as water (W) and water/ethylene glycol (W/EG) mixtures in the ratios of 90:10, 80:20, 70:30, 60:40, and 50:50 were used in this work to make a clear comparison of the effect of the base fluids in the microchannels. To study the heat transfer and fluid flow characteristics different flow rates for the nanofluids were used, ranging from 0.2 to 2 ml/min. An increase in the flow rate as well as the nanoparticle concentration caused an in the heat transfer coefficient, which in turn improved the heat transfer performance. The heat transfer coefficient increased from 6.2% to 36.5% with the base fluid variation from W to W/EG (50:50). The experimental results showed higher improvements in the thermal performance by using nanofluids with W/EG (50:50) base fluids. Moreover, the pumping power required for the flow of the nanofluids was also very low due to the minimal effect of viscosity and density, which confirmed the negligible effect on the thermal systems since heat transfer performance was comparatively very high.

CITÉ PAR
  1. Saha Sujoy Kumar, Ranjan Hrishiraj, Emani Madhu Sruthi, Bharti Anand Kumar, Additives for Gases and Liquids, in Electric Fields, Additives and Simultaneous Heat and Mass Transfer in Heat Transfer Enhancement, 2020. Crossref

  2. Zhang Xinrui, Meng Guangfan, Wang Zhaoliang, Experimental study on flow and heat transfer characteristics of SiC-water nanofluids in micro-cylinder-groups, International Journal of Heat and Mass Transfer, 147, 2020. Crossref

  3. Saha Sujoy Kumar, Ranjan Hrishiraj, Emani Madhu Sruthi, Bharti Anand Kumar, Active and Passive Techniques: Their Applications, in Introduction to Enhanced Heat Transfer, 2020. Crossref

  4. Shafee Ahmad, Jafaryar M., Abohamzeh Elham, Nam Nguyen Dang, Tlili Iskander, Simulation of thermal behavior of hybrid nanomaterial in a tube improved with turbulator, Journal of Thermal Analysis and Calorimetry, 143, 1, 2021. Crossref

  5. Dey Debashis, Sahu Dibyansu S., Nanofluid in the multiphase flow field and heat transfer: A review, Heat Transfer, 50, 4, 2021. Crossref

  6. Zainith Prabhakar, Mishra Niraj Kumar, Evaluation of Thermal Performance of Conically Shaped Micro Helical Tubes Using Non-Newtonian Nanofluids–A Numerical Study, Journal of Thermal Science and Engineering Applications, 14, 8, 2022. Crossref

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