Research progress on thermodynamic properties of supercritical carbon dioxide mixture

QIAO Jiafei; LI Zhuo; LIAO Haiyan; WANG Bingbing; LIU Hangtao; DUAN Yuanyuan

doi:10.19666/j.rlfd.202205084

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Research progress on thermodynamic properties of supercritical carbon dioxide mixture

更新时间：2025-09-28

- Research progress on thermodynamic properties of supercritical carbon dioxide mixture
- Thermal Power Generation Vol. 51, Issue 9, Pages: 1-10(2022)
- 作者机构：
  
  1. 国家能源集团新能源技术研究院有限公司
  2. 清华大学热科学与动力工程教育部重点实验室
- 作者简介：
- 基金信息：
- DOI：10.19666/j.rlfd.202205084
  CLC： TK121
- Published：2022
- 稿件说明：
移动端阅览
QIAO Jiafei, LI Zhuo, LIAO Haiyan, et al. Research progress on thermodynamic properties of supercritical carbon dioxide mixture[J]. Thermal power generation, 2022, 51(9): 1-10.
DOI：

QIAO Jiafei, LI Zhuo, LIAO Haiyan, et al. Research progress on thermodynamic properties of supercritical carbon dioxide mixture[J]. Thermal power generation, 2022, 51(9): 1-10. DOI： 10.19666/j.rlfd.202205084.

摘要

超临界二氧化碳(S-CO_2)循环因清洁、高效、低碳的特性受到广泛关注

其中半闭式循环使用的工质为CO_2混合体系

因此对CO_2混合体系热力学性质的认识和描述提出了新的要求。本文综述了含CO_2混合体系热力学性质的研究进展

并结合S-CO_2循环系统设计需求对研究现状进行分析。结果表明:相对于CO_2纯工质

CO_2混合体系的单相区密度(即pvTx性质)、比热容、声速等基础数据均非常缺乏;已有的半理论状态方程精度需要进一步提升

多参数状态方程需扩大有效应用范围。建议面向S-CO_2循环需求

开展有针对性的热物性实验与理论研究工作。

Abstract

Supercritical carbon dioxide(S-CO_2) cycle has attracted extensive attention due to its clean

high-efficiency and low-carbon characteristics. The working fluid used in semi-closed S-CO_2 cycle is CO_2 mixtures

so a deeper understanding and description of thermodynamic properties of the CO_2 mixutres is required during the research. Based on a critical review

the present knowledge gaps in the experimental data and calculation models of the mixtures containing CO_2 are identified. The analysis shows that

basic experimental data of single-phase density(i.e. PVTx property)

specific heat capacity and sound velocity of CO_2 mixure system are very scarce. The accuracy of the existing semi-theoretical equation of state needs further improvement. The multi-parameter equation of state needs to improve the effective application range. It is recommended to carry out well-targeted experimental and theoretical research to meet the requirements of the S-CO_2 cycle.

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Related Author

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LIU Hangtao

YANG Zhen

DUAN Yuanyuan

HE Xinxin

XUE Zhiheng

CHEN Huiyong

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Related Institution

Beijing Key Laboratory of Carbon Dioxide Resource Utilization and Emission Reduction Technology, Tsinghua University

Xi'an Thermal Power Research Institute Co., Ltd

North China Electric Power Research Institute Co., Ltd

Jijian Investment Shouyang Thermal Power Co., Ltd

Department of Energy and Power Engineering, Tsinghua University

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