Experimental Study on Heat-Storage Performance of Packed Bed Using Cascaded PCM Capsules

被引：0
|
作者：
Zhang Z. [1 ]
Zhang T. [1 ]
Meng Y. [1 ]
机构：
[1] School of Energy and Power Engineering, Northeast Electric Power University, Jilin
来源：
| 1600年 / Chinese Society for Electrical Engineering卷 / 40期
关键词：
Cascaded; Charge and discharge; Packed bed; PCM capsules; Thermal performance;
D O I：
10.13334/j.0258-8013.pcsee.200048
中图分类号：
学科分类号：
摘要：
The design of multi-stage heat storage capsules is an effective method to improve the performance of latent heat energy storage system. In order to solve the problem of optimal combination of cascaded PCM capsules, a packed bed latent heat energy storage system using cascaded phase changes materials (PCMs) capsules has been established in this paper. Four kinds of paraffin with different thermo-physical properties have been selected as the PCMs for experiment. The capsules are packed in the bed at different sections based on the PCM melting temperature. The effects of number of stages and melting point of PCMs on the thermal performance of the latent heat energy storage system were investigated during charging and discharging operations. The complete charge and discharge time, charge and discharge temperature, heat storage-release capacity, energy efficiency, exergy, exergy efficiency and entransy dissipation were computed for different cases to analyze and evaluate the system thermal performance during phase change process. The results show that the multi-stage PCMs with different melting point has the same important effect on the system performance as the number of stages. Moreover, the multi-stage PCMs system with high melting point exhibited the advantage of large heat storage quantity and exergy, high energy efficiency and low entranspy dissipation during a charging discharging cycle. However, its disadvantages are the slow temperature rising and long time of charging discharging. © 2020 Chin. Soc. for Elec. Eng.
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页码：5963 / 5971
页数：8
相关论文
共 27 条
  • [1] Ge Zhihua, Zhang Feiyu, Zhang Youjun, Simulation on performance improvement of single thermocline energy storage tank, Proceedings of the CSEE, 39, 3, pp. 773-781, (2019)
  • [2] Guo Huan, Xu Yujie, Zhang Xinjing, Et al., Off-design performance of compressed air energy storage system with thermal storage [J], Proceedings of the CSEE, 39, 5, pp. 1366-1376, (2019)
  • [3] Seeniraj R V, Narasimhan N L., Performance enhancement of a solar dynamic LHTS module having both fins and multiple PCMs[J], Solar Energy, 82, 6, pp. 535-542, (2008)
  • [4] Alva G, Liu L, Huang X, Et al., Thermal energy storage materials and systems for solar energy applications[J], Renewable and Sustainable Energy Reviews, 68, pp. 693-706, (2017)
  • [5] Farid M M, Kanzawa A., Thermal performance of a heat storage module using PCMs with different melting temperatures:mathematical modeling[J], Journal of Solar Energy Engineering, 111, 3, pp. 152-157, (1989)
  • [6] Watanabe T, Kanzawa A., Second law optimization of a latent heat storage system with PCMs having different melting points[J], Heat Recovery Systems and CHP, 15, 7, pp. 641-653, (1995)
  • [7] Domanski R, Fellah G., Exergy analysis for the evaluation of a thermal storage system employing PCMS with different melting temperatures, Applied Thermal Engineering, 16, 11, pp. 907-919, (1996)
  • [8] Gong Z X, Mujumdar A S., Thermodynamic optimization of the thermal process in energy storage using multiple phase change materials, Thermal Engineering, 17, 11, pp. 1067-1083, (1997)
  • [9] Yang Y, Zhang X, Xu G., Thermal performance of a solar storage packed bed using spherical capsules filled with PCM having different melting points[J], Energy Build, 68, pp. 639-646, (2014)
  • [10] Aldoss T K, Rahman M M., Comparison between the single-PCM and multi-PCM thermal energy storage design[J], Energy Convers. Manage, 83, pp. 79-87, (2014)
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