|Table of Contents|

Structural Optimization of Energy Storage and Heating Solar Collectors(PDF)

南京师范大学学报（工程技术版）[ISSN:1006-6977/CN:61-1281/TN]

Issue:
2022年03期
Page:
1-8
Research Field:
动力工程及工程热物理
Publishing date:

Info

Title:
Structural Optimization of Energy Storage and Heating Solar Collectors
Author(s):
Li Wenzheng; Wu Wei; Xia Man; Lu Enhao; Zhao Yuqi; Li Suqian; Chen Yang
(School of Energy and Mechanical Engineering,Nanjing Normal University,Nanjing 210023,China)
Keywords:
energy storage and heating solar collector; arrangement; tilt angle; phase transition temperature; latent heat of phase transition; numerical simulation
PACS:
TK519
DOI:
10.3969/j.issn.1672-1292.2022.03.001
Abstract:
An energy storage and heating type solar collector is proposed,which integrates a solar vacuum heat collector tube,a gravity heat tube evaporation section,a heat pump evaporator and a phase change material. The collector can effectively overcome the fluctuation effect of solar radiation,and has a compact structure and high heat collection efficiency. The FLUENT software is used to simulate and study the heat storage and release characteristics of the phase change material in the energy storage and heating solar collector. The different structures in the collector,which are the temperature field and velocity field of the phase change material,are compared and analyzed when the evaporation section of the gravity heat pipe and the evaporator pipeline are arranged side by side or in a triangle. The results show that the side-by-side arrangement is better than the triangle arrangement,that the complete melting time of the phase change material can be shortened by 22.6%,and that the phase change material stores more heat during complete melting. The effect of the inclination angle of the collector on the heat storage/heat release process of the phase change material is studied. The results show that the complete melting time of the phase change material is shortened by about 28% when the heat storage process is inclined and placed vertically,and that the melting time is not affected by the tilt angle. Finally,the effects of the phase change temperature and the latent heat of phase change on the phase change process of the phase change material are studied. The results show that in the phase change temperature range that can meet the heat storage requirements of the phase change material,the phase change materials with large latent heat of change with lower phase change temperature and larger latent heat of change should be used.

References:

[1]胡鞍钢. 中国实现2030年前碳达峰目标及主要途径[J]. 北京工业大学学报(社会科学版),2021,21(3):1-15.
[2]葛俊鹏. 太阳能作为绿色能源在建筑中的应用研究[J]. 大众标准化,2021(7):58-60.
[3]BADIEI A,AKHLAGHI Y G,ZHAO X,et al. A chronological review of advances in solar assisted heat pump technology in 21st century[J]. Renewable and Sustainable Energy Reviews,2020,132:110132.
[4]LU J,TANG Y T,LI Z Y,et al. Solar heat pump configurations for water heating system in China[J]. Applied Thermal Engineering,2021,187:116570.
[5]PINEL P,CRUICKSHANK C A,BEAUSOLEIL-MORRISON I,et al. A review of available methods for seasonal storage of solar thermal energy in residential applications[J]. Renewable and Sustainable Energy Reviews,2011,15(7):3341-3359.
[6]KHAIRELDIN F,MAHMOUD K,JALAL F,et al. Phase change material thermal energy storage systems for cooling applications in buildings:A review[J]. Renewable and Sustainable Energy Reviews,2020,119:109579..
[7]WU W,DAI S Z,LIU Z,et al. Experimental study on the performance of a novel solar water heating system with and without PCM[J]. Solar Energy,2018,171:604-612.
[8]方桂花,刘殿贺,虞启辉,等. 相变材料应用于太阳能供暖系统的可行性分析[J]. 机械设计与制造,2021(10):4.
[9]YOUSSEF W,GE Y T,TASSOU S A. Effects of latent heat storage and controls on stability and performance of a solar assisted heat pump system for domestic hot water production[J]. Solar Energy,2017,150:394-407.
[10]吴薇,夏曼,尹正宇,等. 蓄能材料对内插热管式太阳能热泵系统冬季性能的影响[J]. 农业工程学报,2020,36(5):234-240.
[11]苏庆宗,段建国,许立鹏,等. 有机相变储能材料及强化传热研究进展[J]. 化工新型材料,2021,49(4):21-25.
[12]YADAV C,SAHOO R R. Experimental analysis for optimum thermal performance and thermophysical parameters of MWCNT based capric acid PCM by using T-history method[J]. Powder Technology,2020,364:392-403.
[13]刘剑桥,刘泽华,朱辉,等. 太阳能热水器研究近况与展望[J]. 建筑节能,2018,46(11):80-85.
[14]夏曼,王晓宇,吴薇,等. 内插热管式太阳能集热器内相变材料的蓄热/释热特性研究[J]. 南京师范大学学报(工程技术版),2020,20(3):1-8.
[15]孙晨,邱燕. 石蜡在椭圆套管单元内的蓄热特性研究[J]. 节能,2020,39(8):47-52.
[16]WU W,WANG X Y,XIA M,et al. A novel composite PCM for seasonal thermal energy storage of solar water heating system[J]. Renewable Energy,2020,161:457-469.
[17]SHAMSUNDAR N,SPARROW E M. Analysis of multidimensional conduction phase change via the enthalpy model[J]. Asme Transactions Journal of Heat Transfer,1975,97(3):333-340.

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Last Update: 2022-09-15