ANALYSIS AND OPTIMIZATION OF HEAT STORAGE CHARACTERISTICS OF SPHERICAL UNIT HEAT STORAGE DEVICE

被引：0
|
作者：
Fang G. [1 ]
Wang F. [1 ]
Liu Y. [1 ]
Sun P. [1 ]
Tan X. [1 ]
机构：
[1] School of Mechanical Engineering, Inner Mongolia University of Science and Technology, Baotou
来源：
Taiyangneng Xuebao/Acta Energiae Solaris Sinica | 2023年 / 44卷 / 02期
关键词：
heat storage ball; heat storage time; phase change material; porosity; solar energy;
D O I：
10.19912/j.0254-0096.tynxb.2021-1040
中图分类号：
学科分类号：
摘要：
Phase change heat storage technology plays an important role in the field of solar heating. In order to improve solar energy utilization，a set of phase change heat storage device was designed，the influence factors of the spherical phase change heat storage unit were studied，keeping the total mass of the phase change material （PCM）in a small changing range. The heat storage performance of the device was explored through comparing the different diameters，porosity，and interlayer spacing. Experimental and simulation results show that: under the same conditions，the smaller the diameter of the phase change ball，the shorter time for charging heat. Considering the processing difficulty and manufacturing cost，the heat storage ball with a diameter of 46 mm or 50 mm is the best choice; the porosity，inlet temperature and inlet flow have a greater impact on the overall charging heat time; on the contrary，changing the distance between the heat storage balls has smaller effect on the charging heat time. © 2023 Science Press. All rights reserved.
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页码：9 / 14
页数：5
相关论文
共 10 条
  • [1] GUO F, ZHANG J Y，, TIAN Y，, Et al., Study on volume matching of hot water storage tank in solar heating system ［J］, Acta energiae solaris sinica, 41, 9, pp. 219-226, (2020)
  • [2] LI A G，, SHI B J，, ZHANG W Q，, Et al., Structure optimization of phase change hot water storage tank based on solar energy utilization［J］, Acta energiae solaris sinica, 41, 2, pp. 217-224, (2020)
  • [3] SUN Z F, ZHAO Y H, Et al., The application research of phase change cold storage technology in solar air-conditioning system in public buildings［J］, Acta energiae solaris sinica, 40, 11, pp. 3148-3155, (2019)
  • [4] ZHU Z Q, XIAO S L, SHI S H，, Et al., Constrained melting and heat transfer process of phase change material in spherical vessel with fins［J］, Chinese science bulletin, 60, 12, pp. 1125-1131, (2015)
  • [5] MAO Q J, ZHENG T., Simulation study on heat transfer characteristics of inner-fin solar spherical capsule［J］, Science technology and engineering, 18, 3, pp. 235-239, (2018)
  • [6] DAI X L, WANG D Y，, CHEN Z Q，, Et al., Numerical simulation of solidification and heat transfer process in spherical phase change capsule［J］, Journal of engineering thermophysics, 34, 4, pp. 715-719, (2013)
  • [7] WU F, WANG Z L，, ZHANG H，, Et al., Numerical analysis and experiment on the stratification characteristics of spherical phase change heat storage materials in water tanks［J］, Proceedings of the CSEE, 41, 22, pp. 7702-7711, (2021)
  • [8] KANG Y B, ZHANG Y P，, JIANG Y，, Et al., Heat transfer model and thermal performance analysis of phase-change thermal storage sphere packed bed［J］, Journal of Tsinghua University（natural science edition）, 40, 2, pp. 106-109, (2000)
  • [9] LIU M J, ZHU Z Q, Et al., Constrained melting and heat transfer process of composite phase change material in spherical vessel［J］, Journal of Zhejiang University（engineering edition）, 50, 2, (2016)
  • [10] YANG J J，, ZHU G H, Et al., Spherical high-temperature composite shape-stable phase change material properties and design and research of dry pressing process ［J］, Bulletin of the Chinese Ceramic Society, 39, 2, pp. 621-630, (2020)
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