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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.


Papers
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Journal ArticleDOI
TL;DR: In this article, the main effects of the freezing process in soils are noted and its analogy with the drying process is emphasized, and the influence of the degree of saturation is described.

259 citations

Journal ArticleDOI
TL;DR: In this paper, a combined turbulator was proposed to achieve good thermal performance, in which the height of turbulator (b) has been selected and its variation as well as Reynolds number was demonstrated in outputs.

259 citations

Journal ArticleDOI
TL;DR: In this article, the hydrodynamic and thermal fields of a water-γAl2O3 nanofluid in a radial laminar flow cooling system were considered, and it was shown that considerable heat transfer enhancement is possible, even achieving a twofold increase in the case of a 10% nanoparticle volume fraction.

259 citations

Journal ArticleDOI
TL;DR: In this article, the phase change heat transfer in porous phase change materials (ss-PCMs) is discussed and a review of the recent experimental and numerical investigations is presented, which shows that the pore-scale simulation can provide extra flow and heat transfer characteristics in pores, exhibiting great potential for the simulation of mesoporous, microporous and hierarchical porous materials.
Abstract: Latent heat thermal energy storage (LHTES) uses phase change materials (PCMs) to store and release heat, and can effectively address the mismatch between energy supply and demand. However, it suffers from low thermal conductivity and the leakage problem. One of the solutions is integrating porous supports and PCMs to fabricate shape-stabilized phase change materials (ss-PCMs). The phase change heat transfer in porous ss-PCMs is of fundamental importance for determining thermal-fluidic behaviours and evaluating LHTES system performance. This paper reviews the recent experimental and numerical investigations on phase change heat transfer in porous ss-PCMs. Materials, methods, apparatuses and significant outcomes are included in the section of experimental studies and it is found that paraffin and metal foam are the most used PCM and porous support respectively in the current researches. Numerical advances are reviewed from the aspect of different simulation methods. Compared to representative elementary volume (REV)-scale simulation, the pore-scale simulation can provide extra flow and heat transfer characteristics in pores, exhibiting great potential for the simulation of mesoporous, microporous and hierarchical porous materials. Moreover, there exists a research gap between phase change heat transfer and material preparation. Finally, this review outlooks the future research topics of phase change heat transfer in porous ss-PCMs.

259 citations

Journal ArticleDOI
TL;DR: In this paper, an Eulerian two-fluid model is considered to simulate the nanofluid flow inside the microchannel and the governing mass, momentum and energy equations for both phases are solved using the finite volume method.

259 citations


Network Information
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Performance
Metrics
No. of papers in the topic in previous years
YearPapers
20235,737
202210,641
20217,860
20208,182
20198,826
20188,737