50 MW槽式熔盐光热电站蒸汽发生系统的热力性能优化
杨南奇¹，牛浩男²，徐灿君¹，曾勇¹，吴旺松¹，黄静¹，周响球¹，杨仲卿²
（1. 中国电建集团中南勘测设计研究院有限公司，湖南 长沙 410014；2. 重庆大学能源与动力工程学院，重庆 400044）
摘要： 蒸汽发生系统作为槽式熔盐光热电站的核心部件，其传热过程会由于较大的传热温差而产生很大的火用损失。
基于此，建立了蒸汽发生系统的热力学分析模型，采用火用分析理论对比研究了蒸汽发生系统优化前后的火用效率变化。研
究结果表明，分段加热系统模型可降低换热过程的火用损失，火用效率比优化前分别提升了35％ （蒸发器）、49.5% （预热
器）、5％ （过热器）、26％ （再热器）。
关键词： 蒸汽发生系统；分段加热系统；火用分析；熔盐
中图分类号： TK51     文献标识码： A     文章编号： 2095-0802-(2021)10-0014-03
Thermal Performance Optimization of Steam Generation System in 50 MW Trough Molten Salt
Photothermal Power Plant
YANG Nanqi¹, NIU Haonan², XU Canjun¹, ZENG Yong¹, WU Wangsong¹, HUANG Jing¹, ZHOU Xiangqiu¹,
YANG Zhongqing2
(1. Power China Zhongnan Engineering Co., Ltd., Changsha 410014, Hunan, China; 2. School of Energy and Power
Engineering, Chongqing University, Chongqing 400044, China)
Abstract: Steam generation system is the core component of trough molten salt photoelectric power plant, and its heat transfer
process will cause great exergy loss due to large heat transfer temperature difference. Based on this, a thermodynamic analysis
model of steam generation system was established, and the change of exergy efficiency of the steam generation system before and
after optimization was studied by using exergy analysis theory. The research results showed that exergy loss was reduced via the
optimized sectional heating system model during heat exchange process, the exergy efficiency was increased by 35%(evaporator),
49.5% (preheater), 5% (superheater) and 26% (reheater) respectively compared with that before optimization.

Key words: steam generation system; sectional heating system; exergy analysis; molten salt