Thermal and exergetic analysis of Metal Foam-enhanced Cascaded Thermal Energy Storage (MF-CTES)
Thermal and exergetic analysis of Metal Foam-enhanced Cascaded Thermal Energy Storage (MF-CTES)
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DOI：
10.1016/j.ijheatmasstransfer.2012.11.034
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发表时间：
2013-03
影响因子：
5.2
通讯作者：
Yuan Tian;Changying Zhao
中科院分区：
文献类型：
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作者：
Yuan Tian;Changying Zhao
金属泡沫增强级联热能储存（MF-CTES）是为了解决换热过程中由于温差不可避免地减小而导致的传热不良问题而提出的。本文从理论上研究了单级储能、级联储能和MF-CTES的整体热性能，并考虑了热交换率和（火用）效率。主要调查结果如下：CTES提高了STES的热交换率（最高可达30%），MF-CTES进一步提高了STES的热交换率（2-7倍）; CTES不能显著提高STES的火用效率（-15%~+30%），MF-CTES也不能显著提高STES的火用效率; CTES提高了STES的火用传递率（最高可达23%），MF-CTES进一步提高了STES的火用传递率（2-7倍）。
Metal Foam-enhanced Cascaded Thermal Energy Storage (MF-CTES) has been proposed to solve the problem of poor heat transfer during heat exchange process, which is caused by unavoidable decrease of temperature differences. This paper conducts a theoretical study examining the overall thermal performance of Single-stage Thermal Energy Storage (STES), Cascaded Thermal Energy Storage (CTES) and MF-CTES, with both heat exchange rate and exergy efficiency being considered. The main findings are: heat exchange rate of STES is improved by CTES (up to 30%), and is further improved by MF-CTES (by 2–7 times); exergy efficiency of STES cannot be significantly improved by CTES (−15% to +30%), nor by MF-CTES; exergy transfer rate of STES is increased by CTES (up to 23%), and is further increased by MF-CTES (by 2–7 times).