Effect of Dimensionless Number (KN and RE) on Performance Index of Concentric Circular Micro Channel
Pankaj Negi1, Jasmeet Kalra2, Maharshi Subhash3
1Pankaj Negi, Assistant Professor, Department of Mechanical Engineering, Graphic Era Hill University, Dehradun, Uttarakhand, India.
2Jasmeet Kalra, Assistant Professor, Department of Mechanical Engineering, Graphic Era Hill University, Dehradun, Uttarakhand, India.
3Maharshi Subhash, Associate Professor, Department of Mechanical Engineering, Graphic Era (Deemed to be) University, Dehradun, Uttarakhand, India.
Manuscript received on 13 October 2019 | Revised Manuscript received on 20 October 2019 | Manuscript Published on 29 June 2020 | PP: 41-54 | Volume-8 Issue-10S2 August 2019 | Retrieval Number: J101208810S219/2019©BEIESP | DOI: 10.35940/ijitee.J1012.08810S219
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© The Authors. Blue Eyes Intelligence Engineering and Sciences Publication (BEIESP). This is an open-access article under the CC-BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/)
Abstract: Overall performance of any type of heat channel is largely depends upon Knudsen number and Reynolds number [1]. In present work the outcome of dimensionless number on heat transfer properties of micro channel heat exchanger [2]are investigated. CFD analysis of counter flowmicro channel was performed for both slip and no slip flow using Fluent as CFD code. Based on results obtain, pressure drop increases with increment in Reynolds number and Knudsen number. The effectiveness reduces with increment in Reynolds number. The comparison of thermal and hydrodynamics performance between slip and no slip flow for heat exchanger is investigated. The effectiveness increases with decreasing values of Reynolds number for counter flow. For higher effectiveness of the micro channel heat exchanger, Reynolds number should be less.
Keywords: Reynolds number, Micro channel heat exchanger, Slip flow, Knudsen number, counter flow, Nusselt number
Scope of the Article: