Research and Application Progress of Phase Change Thermal Energy Storage Materials for Energy Saving and Carbon Reduction

doi:10.12096/j.2096-4528.pgt.22001

Abstract

Abstract:

Thermal energy storage by using phase change materials (PCMs) is a kind of technology with mature development, simple process and high thermal energy storage density. Its basic homothermal heat storage and release process can reduce the loss of energy quality and has broad application prospects. Focusing on the key materials involved in phase change thermal energy storage technology, this paper introduced the advantages and disadvantages of various phase change materials under different application conditions, and summarized the applications of phase change thermal energy storage materials in waste heat recovery and utilization, solar thermal conversion storage, battery thermal management, building energy conservation and so on. In addition, the research progress in preventing the leakage of PCMs during the phase change process, improving the thermal conductivity of PCMs, and reducing the supercooling and corrosion effects of PCMs were summarized. Considering that the application of thermal energy storage by using PCMs contributes to the goals of energy conservation and carbon reduction, it is necessary to continue the research and development of thermal energy storage materials and continuously improve the comprehensive properties of thermal energy storage materials.

Key words: energy storage, phase change thermal energy storage, energy saving and carbon reduction, phase change materials

CLC Number:

TK 11

Xuebo GUO, Liangchi FAN, Zhenjing XU, You LI, Jun LIN, Lin CHEN. Research and Application Progress of Phase Change Thermal Energy Storage Materials for Energy Saving and Carbon Reduction[J]. Power Generation Technology, 2023, 44(2): 201-212.

Figures/Tables 9

References 72

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金属合金相变材料	相变温度/℃	熔融焓/(kJ/kg)	密度/(kg/m³)	固态热导率/[W/(m·K)]
Mg-24.9Zn-5.1Al	340	157.0	2 820	59
Zn-11.3Al	382	118.0	6 752	133
Al-34Mg	450	310.0	2 300	80
Al-33.2Cu	548	351.0	3 424	130
Al-12Si	576	560.0	2 700	160
Cu-20Si	802	352.2	—	371

金属合金相变材料	相变温度/℃	熔融焓/(kJ/kg)	密度/(kg/m³)	固态热导率/[W/(m·K)]
Mg-24.9Zn-5.1Al	340	157.0	2 820	59
Zn-11.3Al	382	118.0	6 752	133
Al-34Mg	450	310.0	2 300	80
Al-33.2Cu	548	351.0	3 424	130
Al-12Si	576	560.0	2 700	160
Cu-20Si	802	352.2	—	371

熔盐	相变温度/℃	熔融焓/(kJ/kg)	密度/(kg/m³)	热导率/[W/(m·K)]
硝酸钠	310	174.0	2 260	0.50
氢氧化钾	380	149.7	2 044	0.50
溴化钠-55溴化镁	431	212.0	3 490	0.90
碳酸锂-53碳酸钾	488	342.0	2 200	1.99
氯化钠-67氯化钙	500	281.0	1 900	1.02
氟化钠-21氟化钾-62碳酸钾	520	274.0	2 380	1.50

熔盐	相变温度/℃	熔融焓/(kJ/kg)	密度/(kg/m³)	热导率/[W/(m·K)]
硝酸钠	310	174.0	2 260	0.50
氢氧化钾	380	149.7	2 044	0.50
溴化钠-55溴化镁	431	212.0	3 490	0.90
碳酸锂-53碳酸钾	488	342.0	2 200	1.99
氯化钠-67氯化钙	500	281.0	1 900	1.02
氟化钠-21氟化钾-62碳酸钾	520	274.0	2 380	1.50

水合盐	相变温度/℃	熔融焓/(kJ/kg)	密度/(kg/m³)	热导率/[W/(m·K)]
二水合氟化钾	18.5	231	1 447	—
六水合氯化钙	29.5	170	1 680	1.088
十水合碳酸钠	34.0	251	1 440	—
十二水合磷酸氢二钠	36.5	264	1 520	0.514
三水合醋酸钠	58.0	265	1 450	—
六水合硝酸镁	90.0	160	1 460	0.669
六水合氯化镁	116.7	169	1 570	0.704