首页|Comparison of solidification performance enhancement strategies for a triplex-tube thermal energy storage system
Comparison of solidification performance enhancement strategies for a triplex-tube thermal energy storage system
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NSTL
Elsevier
To enhance the solidification performance of phase change material in a triplex-tube thermal energy storage system, a two-dimensional model is established in this paper. The solidification performance of the system is studied by numerical simulation, and the method of adding multistage inner tubes and longitudinal fins is proposed to strengthen the solidification. Firstly, the size of eight fins in the initial model is studied to select the most suitable model, and the most difficult solidification area of the system is found through the study of dynamic temperature response at the position points. Then, multiple inner tubes and T-shaped fins are added to the area and a response surface method is used to optimize the design. The solidification performance of the system can be improved by 50.19% when the diameter of the multistage tube is 4 mm in the best position. The results show that enhancement of solidification property of phase change material by multistage inner tube is better than that by fin. The effects of physical parameters such as multistage inner tubes diameter, cold fluid temperature, and fin structure on solidification performance are also discussed. Finally, the effect of natural convection on the solidification process of phase change material is analyzed.
NSTL
Elsevier
