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Thermodynamic and economic analysis for a liquid air energy storage system coupling cold energy of liquefied ethylene
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Yihong LI1, 2, Jiyun LIU3, Baokun LI3, Zhaozhao GAO1, 2, Liubiao CHEN1, 2, Junjie WANG1, 2
Thermal Power Generation | 2024, 53(9) : 78 - 84
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Thermal Power Generation | 2024, 53(9): 78-84
• Liquid air energy storage technology •
Thermodynamic and economic analysis for a liquid air energy storage system coupling cold energy of liquefied ethylene
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Yihong LI1, 2, Jiyun LIU3, Baokun LI3, Zhaozhao GAO1, 2, Liubiao CHEN1, 2, Junjie WANG1, 2
Affiliations
  • 1.Key Laboratory of Cryogenic Science and Technology, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing 100190, China
  • 2.University of Chinese Academy of Sciences, Beijing 100049, China
  • 3.China Green Development Investment Group Co., Ltd., Beijing 100020, China
Published: 2024-09-25 doi: 10.19666/j.rlfd.202406125
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Liquid air energy storage (LAES) technology stands out as a large-scale energy storage technology due to its superior energy storage density and adaptability to external energy sources. An LAES system that recovers waste cold of liquid ethylene and introduces an external low-temperature heat source is proposed. Moreover, thermodynamical and economic analysis on key parameters, including isentropic efficiency of the compressor and expander, and temperature of the heat source, are conducted. The results reveal that, when the ethylene flow rate is 34 t/h, the energy storage capacity can reach up to 5 MW/40 (MW·h). At isentropic efficiency of the compressor and expander of 90%, the round-trip efficiency can achieve 77.45% by solely relying on an ambient heat source of 25 ℃ for air heating. When the heat source temperature is increased to 125 °C, the system’s optimal round-trip efficiency, net present value, and dynamic payback period reaches 106.99%, 144.73 million yuan, and 3.56 years, respectively. These findings provide reference for research on the coupling of LAES systems with external cold energy.

liquid air energy storage  /  liquefied ethylene  /  cold energy recovery
Yihong LI, Jiyun LIU, Baokun LI, Zhaozhao GAO, Liubiao CHEN, Junjie WANG. Thermodynamic and economic analysis for a liquid air energy storage system coupling cold energy of liquefied ethylene[J]. Thermal Power Generation, 2024 , 53 (9) : 78 -84 . DOI: 10.19666/j.rlfd.202406125
Funding
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  • Postdoctoral Fellowship Program of CPSF(GZC20241778)
  • Technological Innovation Projects of China Green Development Investment Group Co., Ltd.(202309CHDD020)
Appendix
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Year 2024 volume 53 Issue 9
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Article Info
doi: 10.19666/j.rlfd.202406125
  • Receive Date：2024-06-15
  • Online Date：2026-03-06
  • Published：2024-09-25
Article Data
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History
  • Received：2024-06-15
Funding
Postdoctoral Fellowship Program of CPSF(GZC20241778)
Technological Innovation Projects of China Green Development Investment Group Co., Ltd.(202309CHDD020)
Affiliations
    1.Key Laboratory of Cryogenic Science and Technology, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing 100190, China
    2.University of Chinese Academy of Sciences, Beijing 100049, China
    3.China Green Development Investment Group Co., Ltd., Beijing 100020, China
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表12种不同金属材料的力学参数
科
Family		 属数
Number of
genus		 种数
Number of
species		 占总种数比例
Percentage of
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鹅膏菌科Amanitaceae 2 11 5.26 鹅膏菌属 Amanita 10 4.78
小菇科 Mycenaceae 2 12 5.74 丝盖伞属 Inocybe 5 2.39
多孔菌科 Polyporaceae 8 14 6.70 蜡蘑属 Laccaria 5 2.39
红菇科 Russulaceae 3 23 11.00 小皮伞属 Marasmius 6 2.87
小菇属 Mycena 11 5.26
光柄菇属 Pluteus 5 2.39
红菇属 Russula 17 8.13
栓菌属 Trametes 5 2.39
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