Design and Research of Heat Storage Enhancement by Innovative Wave Fin in a Hot Water–Oil-Displacement System

Tao Ning, Xinyu Huang, Junwei Su () and Xiaohu Yang ()
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Tao Ning: School of Human Settlements and Civil Engineering, Xi’an Jiaotong University, Xi’an 710049, China
Xinyu Huang: School of Human Settlements and Civil Engineering, Xi’an Jiaotong University, Xi’an 710049, China
Junwei Su: School of Human Settlements and Civil Engineering, Xi’an Jiaotong University, Xi’an 710049, China
Xiaohu Yang: School of Human Settlements and Civil Engineering, Xi’an Jiaotong University, Xi’an 710049, China

Sustainability, 2023, vol. 15, issue 22, 1-17

Abstract: Energy storage technology provides a new direction for the utilization of renewable and sustainability energy. The objective of this study is to introduce a novel, wavy, longitudinal fin design, which aims to improve heat transfer in the melting process of a Latent Heat Thermal Energy Storage (LHTES) unit. The main goal is to mitigate the negative effects caused by the refractory zone at the end of the melting phase. A two-dimensional numerical model of LHTES unit is established by using the enthalpy porosity method and verified by experimental data. Through the quantitative comparison between the traditional rectangular fin and the innovative wave fin, the influence of wave fin on the heat transfer mechanism in the heat storage process is revealed. The results show that the average heat storage rate of five and six wave fins is 3.70% and 12.98% higher than that of conventional rectangular fins, respectively, and the average temperature response of six wave fins is 17.78% higher than that of conventional rectangular fins. The addition of the wave fin weakens the negative effect of the refractory zone, but prolongs the heating time of the initial melting point.

Keywords: LHTES; melting properties; wavy fin; enhanced heat transfer (search for similar items in EconPapers)
JEL-codes: O13 Q Q0 Q2 Q3 Q5 Q56 (search for similar items in EconPapers)
Date: 2023
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (1)

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