Performance Comparison of Rankine-Carnot Batteries with Different Energy Storage Methods

WANG Jingkun; CAI Kun; XIA Rui; WANG Jun

doi:10.19805/j.cnki.jcspe.2025.250184

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Performance Comparison of Rankine-Carnot Batteries with Different Energy Storage Methods

更新时间：2025-10-22

- Performance Comparison of Rankine-Carnot Batteries with Different Energy Storage Methods
- Chinese Journal of Power Engineering Vol. 45, Issue 10, Pages: 1609-1614(2025)
- 作者机构：
  
  1. 中国电建集团华东勘测设计研究院有限公司,浙江,杭州,311122
  2. 东南大学机械工程学院,江苏,南京,210024
- 作者简介：
- 基金信息：
- DOI：10.19805/j.cnki.jcspe.2025.250184
  CLC：
- Published Online：21 April 2025，
  
  Published：2025
- 稿件说明：
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王靖坤,蔡锟,夏睿,王军. 不同储能方式的朗肯卡诺电池性能对比动力工程学报, 2025, 45(10): 1609-1614 https://doi.

org/10.19805/j.cnki.jcspe.2025.250184
王靖坤,蔡锟,夏睿,王军. 不同储能方式的朗肯卡诺电池性能对比动力工程学报, 2025, 45(10): 1609-1614 https://doi. DOI： 10.19805/j.cnki.jcspe.2025.250184.

org/10.19805/j.cnki.jcspe.2025.250184 DOI：

摘要

为对比不同储能方式朗肯卡诺电池的性能差异

分别建立了储热朗肯卡诺电池与储冷朗肯卡诺电池的热力学模型

对比分析了相同参数条件下2种系统的能量效率与效率。能量分析结果表明:不同储能方式朗肯卡诺电池的电能往返效率均由充电循环效率与放电循环效率共同决定

储热朗肯卡诺电池的电能往返效率随着储热温度升高10 K而降低17.99%

随着环境温度升高10 K而降低12.06%;储冷朗肯卡诺电池的电能往返效率随着储冷温度升高10 K而提高15.82%

随着环境温度升高10 K而降低22.69%。分析结果表明:储热朗肯卡诺电池的效率随着储热温度升高10 K而降低2.62%

随着环境温度升高10 K而降低4.90%;储冷朗肯卡诺电池的效率随着储冷温度升高10 K而提高1.91%

随着环境温度升高10 K而降低7.82%。参数敏感性分析结果表明:在相同循环温差条件下

储热朗肯卡诺电池的能量评价指标与评价指标均高于储冷朗肯卡诺电池

且与放电循环相比

充电循环的性能参数对参数条件变化的敏感性更高。

Abstract

To compare the performances of Rankine-Carnot batteries with different energy storage methods

thermodynamic models of the heat storage Rankine-Carnot battery and cold storage Rankine-Carnot battery were developed

respectively. The energy efficiency and exergy efficiency of the two systems under the same parameter conditions were compared and analyzed. The results of energy analysis show that: the round-trip electrical efficiency of Rankine-Carnot batteries with different energy storage methods is jointly determined by the charging cycle efficiency and discharging cycle efficiency. For the heat storage Rankine-Carnot battery

its round-trip electrical efficiency decreases by 17.99% as the heat storage temperature increases by 10 K

and decreases by 12.06% as the ambient temperature increases by 10 K. For the cold storage Rankine-Carnot battery

its round-trip electrical efficiency increases by 15.82% as the cold storage temperature increases by 10 K

and decreases by 22.69% as the ambient temperature increases by 10 K. The results of exergy analysis show that: the exergy efficiency of the heat storage Rankine-Carnot battery decreases by 2.62% as the heat storage temperature increases by 10 K

and decreases by 4.90% as the ambient temperature increases by 10 K. The exergy efficiency of the cold storage Rankine-Carnot battery increases by 1.91% as the cold storage temperature increases by 10 K

and decreases by 7.82% as the ambient temperature increases by 10 K. The results of parameter sensitivity analysis show that under the same cycle temperature difference

both the energy evaluation indicators and exergy evaluation indicators of the heat storage Rankine-Carnot battery are higher than those of the cold storage Rankine-Carnot battery. Moreover

compared with the discharging cycle

the performance parameters of the charging cycle are more sensitive to changes in parameter conditions.

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references

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