Comparative analysis of jet impingement and microchannel cooling for high heat flux applications

• Published in: International journal of heat and mass transfer Vol. 42; no. 9; pp. 1555 - 1568
• Main Authors: Lee, D.-Y., Vafai, K.
• Format: Journal Article
• Language: English
• Published: Oxford Elsevier Ltd 01.05.1999; Elsevier
• Subjects: Applied sciences; Channel flow; Cooling; Cost effectiveness; Energy; Energy. Thermal use of fuels; Exact sciences and technology; Fluid dynamics; Fundamental areas of phenomenology (including applications); Heat flux; Heat transfer; Jets; Physics; Theoretical studies. Data and constants. Metering; Thermal effects; Turbulent flows, convection, and heat transfer; Wall; Cooling; Interaction; Geometrical configuration; Heat flow; Microchannel plates; Multiple jet; Microstructure; Performance; Comparative study; Optimization; Heat transfer
• ISSN: 0017-9310; 1879-2189
• DOI: 10.1016/S0017-9310(98)00265-8

In this work, a comparative investigation of jet impingement and microchannel cooling is presented. The thermal performance of each technology evaluated at the respective optimal condition is compared to each other with the target dimension as a main parameter. It is revealed that the microchannel cooling is preferable for a target dimension smaller than 0.07 by 0.07 m, while the jet impingement is comparable or better than the microchannel cooling for a larger target plate if a proper treatment is applied for the spent flow after the impingement. Various pertinent aspects of each technology as well as a detailed comparative analysis of the two technologies are presented. In selecting a technology from the two, the economic aspects, such as manufacturing and maintenance cost, also have to be taken into account, since the better performing one may not be necessarily the more suitable one.