SIMULATION ANALYSIS AND EXPERIMENTAL STUDY ON EXOTHERMIC PROCESS OF SOLID ACCUMULATOR

Hu Zifeng; Duan Zhenyun; Xu Yaozu; Shang Xiangdong; Xu Jingjiu

doi:10.19912/j.0254-0096.tynxb.2022-0083

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Acta Energiae Solaris Sinica ›› 2023, Vol. 44 ›› Issue (6) : 71-77. DOI: 10.19912/j.0254-0096.tynxb.2022-0083

SIMULATION ANALYSIS AND EXPERIMENTAL STUDY ON EXOTHERMIC PROCESS OF SOLID ACCUMULATOR

Hu Zifeng¹, Duan Zhenyun¹, Xu Yaozu², Shang Xiangdong¹, Xu Jingjiu²

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Abstract

In order to obtain the flow field distribution and flow characteristics of the heat release process of solid accumulator in practical engineering application, the heat release process of solid accumulator commonly used in engineering is taken as the research object, a method of heat fluid-structure coupling analysis with non-constant physical parameters is designed, and its feasibility is verified by numerical simulation and experiment. Using numerical simulation method based on the exothermic process of regenerative heat exchanger with the solid heat transfer characteristics are studied. The results show that in the first stage of the exothermic process, under the effect of low wind speed loop, the heating power is small, as the regenerator temperature Nu number is gradually reduced, and gradually tend to Nu value of the surface heat flow density,showing convective heat transfer characteristics of entrances. In the second stage of the exothermic process, the exothermic power is significantly increased due to the increase of wind speed. With the progress of the second stage, Nu number gradually increases and the convective heat transfer characteristics is high.

Key words

heat storage / thermal analysis / numerical simulation / fluid structure interaction / solid thermal accumulator

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Hu Zifeng, Duan Zhenyun, Xu Yaozu, Shang Xiangdong, Xu Jingjiu. SIMULATION ANALYSIS AND EXPERIMENTAL STUDY ON EXOTHERMIC PROCESS OF SOLID ACCUMULATOR[J]. Acta Energiae Solaris Sinica. 2023, 44(6): 71-77 https://doi.org/10.19912/j.0254-0096.tynxb.2022-0083

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