Thermodynamic performances of solar hybrid coal-fired power system

PENG Shuo; ZHOU Xian; WANG Baomin; WANG Jianzhao

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Thermodynamic performances of solar hybrid coal-fired power system

Thermal Power Generation Vol. 46, Issue 5, Pages: 31-35(2017)

更新时间：2025-09-28

- Thermodynamic performances of solar hybrid coal-fired power system
- 作者机构：
  
  1. 中国华能集团清洁能源技术研究院有限公司
  2. 煤基清洁能源国家重点实验室
- 作者简介：
- 基金信息：
- DOI：
  CLC： TM61
- Published：2017
- 稿件说明：
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PENG Shuo, ZHOU Xian, WANG Baomin, et al. Thermodynamic performances of solar hybrid coal-fired power system[J]. Thermal Power Generation, 2017, 46(5): 31-35.
DOI：

PENG Shuo, ZHOU Xian, WANG Baomin, et al. Thermodynamic performances of solar hybrid coal-fired power system[J]. Thermal Power Generation, 2017, 46(5): 31-35. DOI：

摘要

建立了纯燃煤发电系统和光煤互补发电系统的物理模型

从系统的能量平衡和平衡方程出发

推导了光煤互补发电系统太阳能净发电效率的解析式

并对该系统的热力学性能进行了分析

研究了集热温度、聚光比、太阳辐照强度对互补系统太阳能净发电效率的影响。结果表明:太阳能聚光集热替代的抽汽级越高

互补发电系统的太阳能净发电效率越高;当太阳能聚光集热替代同一级抽汽时

集热温度越高

互补系统的太阳能净发电效率越低;对于给定的聚光集热温度和太阳辐照强度

互补系统的太阳能净发电效率随着聚光比的增大而升高;对于给定的集热温度和聚光比

互补系统的太阳能净发电效率随着太阳辐照强度的增加而升高。本文的研究结果可为光煤互补发电系统的优化设计提供理论参考。

Abstract

The physical model of the coal-fired power system and the solar hybrid coal-fired power system is established. Starting from the energy balance equation and exergy balance equation

this paper derived the formula of the solar-to-electricity efficiency of the solar hybrid coal-fired power system. Besides

the thermodynamic properties of the solar hybrid coal-fired power system are analyzed. The influence of the receiver temperature

concentration ratio and solar irradiation intensity on the solar-to-electricity efficiency is studied. As a result

higher solar-to-electricity efficiency could be got when higher state extracted steam is replaced by solar heat. When the same stage extracted steam is replaced by solar heat

the higher solar-to-electricity efficiency is achieved for lower receiver temperature. For a given receiver temperature and a given solar irradiation intensity

the solar-to-electricity efficiency increases with the concentration ratio. For a given receiver temperature and a given concentration ratio

the solar-to-electricity efficiency increases with the solar irradiation intensity. The research in this paper will provide a theoretical reference for design and optimization of the solar hybrid coal-fired power systems.

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