A fast dynamic model for a large scale heat pipe embedded latent heat thermal energy storage system for optimal sizing and control

被引:10
作者
Pan, Chunjian [1 ]
Vermaak, Natasha [1 ]
Wang, Xingchao [2 ,3 ]
Romero, Carlos [1 ]
Neti, Sudhakar [1 ]
Chen, Chien-Hua [4 ]
Bonner, Richard [4 ]
机构
[1] Lehigh Univ, Energy Res Ctr, Bethlehem, PA 18015 USA
[2] Colorado Sch Mines, Dept Mech Engn, 1500 Illinois St, Golden, CO 80401 USA
[3] Natl Renewable Energy Lab NREL, 15033 West Denver Pkwy, Golden, CO 80401 USA
[4] Adv Cooling Technol Inc, 1046 New Holland Ave Bldg 2, Lancaster, PA 17601 USA
关键词
Fast dynamic model; PCM; Latent heat thermal energy storage; Optimal design; Predictive control; PHASE-CHANGE MATERIALS; CHARGE ESTIMATION; PERFORMANCE; DESIGN; OPTIMIZATION; FINS; UNIT; PCM; SOLIDIFICATION; ALGORITHM;
D O I
10.1016/j.est.2022.104489
中图分类号
TE [石油、天然气工业]; TK [能源与动力工程];
学科分类号
0807 ; 0820 ;
摘要
One of the challenges to design and control phase change material (PCM) based latent heat thermal energy storage (LHTES) systems is to develop fast models to accurately represent their transient and nonlinear behaviors. In this paper, a fast explicit modeling approach for a multi-dimensional finned PCM system, called alternating front propagating, is proposed based on the concept of the alternating-direction implicit algorithm for multi-dimensional parabolic and elliptic differential equations. The proposed modeling method is employed to develop a fast explicit dynamic model for a large scale LHTES system, whose heat transfer is enhanced by imbedded circular finned heat pipes. The developed fast model has negligible computational cost and is of sufficient accuracy compared to high-fidelity numerical solutions. The fast explicit model of the LHTES system was employed in a model predictive control framework to determine the HTF flowrate so that its outlet temperature meets a target value. The controlled HTF flowrate can increase the usage efficiency of the stored heat in a LHTES system.
引用
收藏
页数:10
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