Simulation study on supercritical carbon dioxide thermal power system

CHEN Yunan; ZHANG Yifan; LIU Wenjuan; LI Hongzhi

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Simulation study on supercritical carbon dioxide thermal power system

更新时间：2025-09-28

- Simulation study on supercritical carbon dioxide thermal power system
- Thermal Power Generation Vol. 46, Issue 2, Pages: 22-27(2017)
- 作者机构：
  
  西安热工研究院有限公司
- 作者简介：
- 基金信息：
- DOI：
  CLC： TM621;TM743
- Published：2017
- 稿件说明：
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CHEN Yunan, ZHANG Yifan, LIU Wenjuan, et al. Simulation study on supercritical carbon dioxide thermal power system[J]. Thermal power generation, 2017, 46(2): 22-27.
DOI：

CHEN Yunan, ZHANG Yifan, LIU Wenjuan, et al. Simulation study on supercritical carbon dioxide thermal power system[J]. Thermal power generation, 2017, 46(2): 22-27. DOI：

摘要

采用Aspen plus软件建立了超临界二氧化碳布雷顿循环600 MW火力发电系统数学模型

计算分析了压缩分流系数、汽轮机分流系数、压缩机压比、汽轮机和主压缩机入口温度对循环效率的影响。结果表明:压缩分流系数、压缩机压比、汽轮机和主压缩机入口温度对系统循环效率的影响显著

而汽轮机分流系数对系统循环效率几乎无影响;压缩机压比与压缩分流系数之间存在最优耦合值

使得该系统的循环效率最高;系统循环效率随着汽轮机入口温度的增加而增加

随着主压缩机入口温度的增加而降低。

Abstract

The Aspen plus software was applied to establish the mathematical model for supercritical carbon dioxide brayton cycle and the thermal power system of a 600 MW unit was calculated.The effects of several factors such as compression split coefficient

turbine split coefficient

pressure ratio of the compressor

inlet temperature of the turbine and main compressor on the system cycle efficiency were analyzed.The results show that

the compression split coefficient

the pressure ratio of the compressor

the inlet temperature of the turbine and main compressor have remarkable effects on the system cycle efficiency

while the turbine split coefficient has little effect.There exists an optimal coupling value between the pressure ratio of the compressor and the compression split coefficient

which results in the highest circulation efficiency.The system circulation efficiency increases with the inlet temperature of the turbine but decreases with the rising inlet temperature of the main compressor.

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