Topic
Heat transfer
About: Heat transfer is a research topic. Over the lifetime, 181795 publications have been published within this topic receiving 2923586 citations. The topic is also known as: heat exchange.
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TL;DR: In this article, a solution method is described and applied for treating non-similar thermal boundary layers, where the solutions are locally autonomous and are found by solving quasi-ordinary differential equations of the similarity type.
Abstract: A solution method is described and applied for treating non-similar thermal boundary layers. The solutions are locally autonomous (that is, independent of information from other streamwise locations) and are found by solving quasi-ordinary differential equations of the similarity type. All non-similar terms appearing in the conservation equations are retained without approximation, and only in derived subsidiary equations are terms selectively neglected. The accuracy of the results can be appraised from comparisons internal to the method itself. Thermal boundary-layer non-similarity arising both from velocity-field, non-similarity and from streamwise variations of surface temperature are analyzed. Numerical results for the surface heat transfer and for the boundary-layer temperature distribution are presented for various physical situations.
308 citations
TL;DR: In this article, a new cooling method for cylindrical batteries which is based on mini-channel liquid cooled cylinder is proposed, and the effects of channel quantity, mass flow rate, flow direction and entrance size on the heat dissipation performance were investigated numerically.
307 citations
TL;DR: In this paper, the effect of radiation on the natural convection flow of an optically dense incompressible fluid along a uniformly heated vertical plate with a uniform suction was analyzed using a series solution for small values of ξ (a scaled streamwise coordinate); an asymptotic solution for large ξ ; and a full numerical solution.
307 citations
TL;DR: In this article, the effect of cooling conditions and battery configuration on battery temperature was investigated and it was found that a cooling strategy based on distributed forced convection is an efficient, cost-effective method which can provide uniform temperature and voltage distributions within the battery pack at various discharge rates.
Abstract: SUMMARY
Thermal issues associated with electric vehicle battery packs can significantly affect performance and life cycle. Fundamental heat transfer principles and performance characteristics of commercial lithium-ion battery are used to predict the temperature distributions in a typical battery pack under a range of discharge conditions. Various cooling strategies are implemented to examine the relationship between battery thermal behavior and design parameters. By studying the effect of cooling conditions and pack configuration on battery temperature, information is obtained as to how to maintain operating temperature by designing proper battery configuration and choosing proper cooling systems. It was found that a cooling strategy based on distributed forced convection is an efficient, cost-effective method which can provide uniform temperature and voltage distributions within the battery pack at various discharge rates. Copyright © 2012 John Wiley & Sons, Ltd.
307 citations
TL;DR: In this article, the authors compared empirical and theoretical relations to evaluate the thermal borehole resistances as well as methods to evaluate them experimentally and compared the impact of different approaches on the design of heat exchanger.
306 citations