Exergy analysis of two phase change materials storage system for solar thermal power with finite-time thermodynamics

被引：85
|
作者：
Li, Ya-Qi [1 ,2 ]
He, Ya-Ling [1 ]
Wang, Zhi-Feng [3 ]
Xu, Chao [3 ]
Wang, Weiwei [1 ]
机构：
[1] Xi An Jiao Tong Univ, Sch Energy & Power Engn, Key Lab Thermofluid Sci & Engn MOE, State Key Lab Multiphase Flow Power Engn, Xian 710049, Shaanxi, Peoples R China
[2] Xian Res Inst Hitech, Xian 710025, Shaanxi, Peoples R China
[3] Chinese Acad Sci, Inst Elect Engn, Beijing 100190, Peoples R China
来源：
RENEWABLE ENERGY | 2012年 / 39卷 / 01期
基金：
中国国家自然科学基金;
关键词：
Solar thermal power; Phase change materials (PCMs); Exergy analysis; Finite-time thermodynamics (FTT); ENERGY-STORAGE; PHASE-CHANGE; OPTIMIZATION;
D O I：
10.1016/j.renene.2011.08.026
中图分类号：
X [环境科学、安全科学];
学科分类号：
08 ; 0830 ;
摘要：
A mathematical model for the overall exergetic efficiency of two phase change materials named PCM1 and PCM2 storage system with a concentrating collector for solar thermal power based on finite-time thermodynamics is developed. The model takes into consideration the effects of melting temperatures and number of heat transfer unit of PCM1 and PCM2 on the overall exergetic efficiency. The analysis is based on a lumped model for the PCMs which assumes that a PCM is a thermal reservoir with a constant temperature of its melting point and a distributed model for the air which assumes that the temperature of the air varies in its flow path. The results show that the overall exergetic efficiency can be improved by 19.0-53.8% using two PCMs compared with a single PCM. It is found that melting temperatures of PCM1 and PCM2 have different influences on the overall exergetic efficiency, and the overall exergetic efficiency decreases with increasing the melting temperature of PCM1, increases with increasing the melting temperature of PCM2. It is also found that for PCM1, increasing its number of heat transfer unit can increase the overall exergetic efficiency, however, for PCM2, only when the melting temperature of PCM1 is less than 1150 K and the melting temperature of PCM2 is more than 750K, increasing the number of heat transfer unit of PCM2 can increase the overall exergetic efficiency. Considering actual application of solar thermal power, we suggest that the optimum melting temperature range of PCM1 is 1000-1150 K and that of PCM2 is 750-900 K. The present analysis provides theoretical guidance for applications of two PCMs storage system for solar thermal power. (C) 2011 Elsevier Ltd. All rights reserved.
引用
收藏
页码：447 / 454
页数：8
相关论文
共 50 条
  • [21] Recent Investigations of Phase Change Materials Use in Solar Thermal Energy Storage System
    Mao, Qianjun
    Liu, Ning
    Peng, Li
    ADVANCES IN MATERIALS SCIENCE AND ENGINEERING, 2018, 2018
  • [22] Solar energy latent thermal storage by phase change materials (PCMs) in a honeycomb system
    Andreozzi, Assunta
    Buonomo, Bernardo
    Ercole, Davide
    Manca, Oronzio
    THERMAL SCIENCE AND ENGINEERING PROGRESS, 2018, 6 : 410 - 420
  • [23] Progress in research and development of phase change materials for thermal energy storage in concentrated solar power
    Khan, Muhammad Imran
    Asfand, Faisal
    Al-Ghamdi, Sami G.
    APPLIED THERMAL ENGINEERING, 2023, 219
  • [24] Feasibility analysis on the phase change thermal storage heating system of solar energy
    Pan, Liang
    PROCEEDINGS OF 2014 IEEE WORKSHOP ON ADVANCED RESEARCH AND TECHNOLOGY IN INDUSTRY APPLICATIONS (WARTIA), 2014, : 36 - 38
  • [25] Two-Phase Anaerobic Digester Combined with Solar Thermal and Phase Change Thermal Storage System in Winter
    Wang, Chuqiao
    Lu, Yong
    Hong, Feng
    Li, Xianning
    Zeng, Xueliang
    Lu, Haowei
    ENERGY & FUELS, 2017, 31 (04) : 4003 - 4012
  • [26] Energy, exergy and universal exergy analysis of parabolic trough solar thermal power system
    Zhang X.
    Wu Y.
    Taiyangneng Xuebao/Acta Energiae Solaris Sinica, 2021, 42 (12): : 9 - 16
  • [27] Numerical analysis of a new thermal energy storage system using phase change materials for direct steam parabolic trough solar power plants
    Kargar, Mohammad Reza
    Baniasadi, Ehsan
    Mosharaf-Dehkordi, Mehdi
    SOLAR ENERGY, 2018, 170 : 594 - 605
  • [28] Exergy analysis of an adiabatic compressed air energy storage system using a cascade of phase change materials
    Tessier, Michael J.
    Floros, Michael C.
    Bouzidi, Laziz
    Narine, Suresh S.
    ENERGY, 2016, 106 : 528 - 534
  • [29] Numerical investigation of an amalgamation of two phase change materials thermal energy storage system
    Gharde, Pankaj R.
    Havaldar, Sanjay N.
    JOURNAL OF THERMAL ENGINEERING, 2024, 10 (02): : 263 - 272
  • [30] Exergy analysis and optimization of charging-discharging processes of latent heat thermal energy storage system with three phase change materials
    Xu, Yang
    He, Ya-Ling
    Li, Ya-Qi
    Song, Hong-Jie
    SOLAR ENERGY, 2016, 123 : 206 - 216
12345