Numerical Simulation on the Influence of the Longitudinal Fins on the Enhancement of a Shell-and-Tube Ice Storage Device

Pei Cai, Youxue Jiang, He Wang, Liangyu Wu, Peng Cao, Yulong Zhang and Feng Yao
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Pei Cai: School of Environmental Science and Engineering, Suzhou University of Science and Technology, Suzhou 215009, China
Youxue Jiang: Jiangsu Vocational Institute of Commerce, Nanjing 211168, China
He Wang: School of Energy and Environment, Southeast University, Nanjing 210096, China
Liangyu Wu: College of Electrical, Energy and Power Engineering, Yangzhou University, Yangzhou 225127, China
Peng Cao: College of Electrical, Energy and Power Engineering, Yangzhou University, Yangzhou 225127, China
Yulong Zhang: Pen-Tung Sah Institute of Micro-Nano Science and Technology, Xiamen University, Xiamen 361005, China
Feng Yao: School of Environmental Science and Engineering, Suzhou University of Science and Technology, Suzhou 215009, China

Sustainability, 2020, vol. 12, issue 6, 1-14

Abstract: The theoretical model of the solidification process of a shell-and-tube ice storage (STIS) device with longitudinal fins is established. The liquid fraction, the energy-discharging rate and the ice storage ratio are investigated, with particular focus on the effects of the fin structure parameters on the solidification process. Furthermore, the temperature and the streamline distributions are discussed to reveal the mechanism of the solidification process in the STIS device and the negative effect of natural convection (NC). It is indicated that the solidification process of the STIS device is dominated by the heat transfer via the fins at the beginning, and then by the heat transfer at the water–ice interface. The ice storage is negatively affected by the NC, for the reason that the water with a higher temperature stays in the lower part of the STIS device and the temperature gradient at the water–ice interface is small. The ice storage performance can be enhanced by increasing the fin structure parameters, including height, thickness and number.

Keywords: ice storage; natural convection; heat transfer; solidification (search for similar items in EconPapers)
JEL-codes: O13 Q Q0 Q2 Q3 Q5 Q56 (search for similar items in EconPapers)
Date: 2020
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