Comprehensive performance analysis and structural improvement of latent heat thermal energy storage (LHTES) unit using a novel parallel enthalpy-based lattice Boltzmann model

被引:11
作者
Chen, Dongyu [1 ]
Riaz, Amir [1 ]
Aute, Vikrant C. [1 ]
Radermacher, Reinhard [1 ]
机构
[1] Univ Maryland, Ctr Environm Energy Engn CEEE, Dept Mech Engn, 4164 Glenn Martin Hall Bldg, College Pk, MD 20742 USA
关键词
Thermal energy storage; Phase change material; Lattice Boltzmann method; Convective heat transfer; Porous media; PHASE-CHANGE MATERIALS; NATURAL-CONVECTION; PCM; SYSTEM; EVOLUTION;
D O I
10.1016/j.est.2023.108902
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
Latent heat thermal energy storage (LHTES) utilizing phase change material (PCM) is one of the critical enablers in developing sustainable and low-carbon energy systems. To fill the knowledge gap, this paper presents an enthalpy-based solid-liquid model through the lattice Boltzmann method (LBM) with a multi-relaxation-time (MRT) approach, aiming to simulate convective phase change in LHTES units with and without porous media in Cartesian or axisymmetric domains. To improve accuracy and efficiency, the model integrates a differential scanning calorimetry (DSC) correlated equation for enthalpy modeling, couples with a 1D heat-transfer-fluid (HTF) model for boundary treatment of HTF side, and employs a parallel LBM scheme for efficient parametric studies. The validation demonstrates the model's success in predicting PCM phase change, with errors below 10%. A comprehensive numerical analysis is then conducted to quantitatively evaluate the effect of convection on PCM melting. Novel metrics, such as acceleration rates (ac) of PCM melting and threshold Rayleigh numbers (Radc) at various aspect ratios, are introduced. Furthermore, PCM melting in the porous cylindrical unit is explored. Findings reveal up to 86% acceleration in melting compared to pure PCM at 80% energy storage, and the porous media with porosity above 0.9 is recommended for thermal enhancement. Moreover, this paper analyzes the negative effect of uneven temperature distributions caused by convection on LHTES unit efficiency. A modified LHTES unit geometry is proposed to offset this negative effect, and the study demonstrates successful mitigation of uneven temperature distributions, achieving up to 57 % acceleration in PCM melting.
引用
收藏
页数:16
相关论文
共 54 条
[1]   Review of the phase change material (PCM) usage for solar domestic water heating systems (SDWHS) [J].
Abokersh, Mohamed Hany ;
Osman, Mohamed ;
El-Baz, Omnia ;
El-Morsi, Mohamed ;
Sharaf, Osama .
INTERNATIONAL JOURNAL OF ENERGY RESEARCH, 2018, 42 (02) :329-357
[2]   A review of materials, heat transfer and phase change problem formulation for latent heat thermal energy storage systems (LHTESS) [J].
Agyenim, Francis ;
Hewitt, Neil ;
Eames, Philip ;
Smyth, Mervyn .
RENEWABLE & SUSTAINABLE ENERGY REVIEWS, 2010, 14 (02) :615-628
[3]   Cold energy storage in a packed bed of novel graphite/PCM composite spheres [J].
Al-Shannaq, Refat ;
Young, Brent ;
Farid, Mohammed .
ENERGY, 2019, 171 :296-305
[4]   Effects of various types of nanomaterials on PCM melting process in a thermal energy storage system for solar cooling application using CFD and MCMC methods [J].
Alazwari, Mashhour A. ;
Algarni, Mohammed ;
Safaei, Mohammad Reza .
INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER, 2022, 195
[5]   Metal foam-phase change material composites for thermal energy storage: A review of performance parameters [J].
Aramesh, M. ;
Shabani, B. .
RENEWABLE & SUSTAINABLE ENERGY REVIEWS, 2022, 155
[6]   NATURAL-CONVECTION SOLID LIQUID-PHASE CHANGE IN POROUS-MEDIA [J].
BECKERMANN, C ;
VISKANTA, R .
INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER, 1988, 31 (01) :35-46
[7]   Flow and heat transfer evolution of PCM due to natural convection melting in a square cavity with a local heater [J].
Bondareva, Nadezhda S. ;
Sheremet, Mikhail A. .
INTERNATIONAL JOURNAL OF MECHANICAL SCIENCES, 2017, 134 :610-619
[8]  
Buschle J., 2006, MODELICA 2006, P235
[9]   A Multiple-Relaxation-Time Lattice Boltzmann Model for General Nonlinear Anisotropic Convection-Diffusion Equations [J].
Chai, Zhenhua ;
Shi, Baochang ;
Guo, Zhaoli .
JOURNAL OF SCIENTIFIC COMPUTING, 2016, 69 (01) :355-390
[10]  
Chapman S., 1990, The mathematical theory of non-uniform gases