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 paper, both single-phase forced convection and sub-cooled and saturated nucleate boiling experiments have been performed in small rectangular channels using FC-84 as test fluid.
327 citations
TL;DR: In this paper, an analytical study of the forced convection heat transfer characteristics in high porosity open-cell metal-foam filled pipes is presented. And the results show that the pore size and porosity of metal foams play important roles on overall heat transfer performance.
327 citations
TL;DR: In this article, a comparative review of phase change material (PCM) based LHS performance enhancement methods is presented, which can be classified into three categories: using high thermal conductivity additives and porous media to enhance PCM thermal conductivities, using finned tubes and encapsulated PCMs to extend heat transfer surface, using multistage or cascaded LHS technique and thermodynamic optimization to improve the heat transfer uniformity.
Abstract: Latent heat storage (LHS) is considered as the most promising technique for thermal energy storage, due to its high energy storage density and nearly constant working temperature. However, the lower thermal conductivity of the phase change material (PCM) used in LHS system seriously weakens thermal energy charging and discharging rates. In order to improve the thermal performance of LHS system, a lot of research on performance enhancement have been carried out. This review paper will concern on the development of PCMs and performance enhancement methods for LHS system in the last decade. The available enhancement methods can be classified into three categories: using high thermal conductivity additives and porous media to enhance PCM thermal conductivity, using finned tubes and encapsulated PCMs to extend heat transfer surface, using multistage or cascaded LHS technique and thermodynamic optimization to improving the heat transfer uniformity. The comparative reviews on PCMs, corresponding performance enhancement methods and their characteristics are presented in present paper. That will help in selecting reliable PCMs and matching suitable performance enhancement method to achieve the best thermal performance for PCM based LHS system. In addition, the research gaps in performance enhancement techniques for LHS systems are also discussed and some recommendations for future research are proposed.
327 citations
325 citations