低温烟气有机郎肯循环ORC系统热力性能与经济性的对比分析

doi:10.16085/j.issn.1000-6613.2016-2287

化工进展 ›› 2017, Vol. 36 ›› Issue (11): 4010-4016.DOI: 10.16085/j.issn.1000-6613.2016-2287

低温烟气有机郎肯循环ORC系统热力性能与经济性的对比分析

韩中合, 许鸿胜, 范伟, 赵若丞, 王智

华北电力大学电站设备状态监测与控制教育部重点实验室, 河北保定 071003

收稿日期:2016-12-07 修回日期:2017-05-26 出版日期:2017-11-05 发布日期:2017-11-05
通讯作者: 韩中合(1964-),男,教授,博士,研究方向为热力设备状态监测与故障诊断及两相流计算测量。
作者简介:韩中合(1964-),男,教授,博士,研究方向为热力设备状态监测与故障诊断及两相流计算测量。E-mail:han_zhonghe@126.com。
基金资助:
国家自然科学基金资助项目（51306059）及中央高校基本科研业务专项基金（2014MS151）项目。

Comparison of thermodynamic performance and economic efficiency of ORC system for low temperature flue gas

HAN Zhonghe, XU Hongsheng, FAN Wei, ZHAO Ruocheng, WANG Zhi

Key Laboratory of Condition Monitoring and Control for Power Plant Equipment, North China Electric Power University, Baoding 071003, Hebei, China

Received:2016-12-07 Revised:2017-05-26 Online:2017-11-05 Published:2017-11-05

摘要/Abstract

摘要： 以工业低温烟气余热有机朗肯循环（ORC）循环发电系统为研究对象，选取了两组共4四种工质，基于热源参数分别对系统热力性能及经济性指标进行计算，分析不同工质系统的热经济性与经济性指标的变化，对4四种工质的热力性能指标、经济性指标以及最佳工况进行对比分析。结果表明，同组工质的净功量和热耗率变化相似且数值接近，但电力生产成本和投资回收期差别较大。同一工质的最佳热经济性工况和最佳经济性工况存在差异，在本文条件下，工质最佳经济性工况下的蒸发温度高于最佳热经济性工况下的蒸发温度约8~10℃左右。R600a为所选4四种工质中兼顾经济性与热经济性的最佳工质，采用R236ea的系统热力性能好于R600，而采用R600的系统电力生产成本始终低于R236ea，R600相比于R236ea具有明显的经济性优势。

关键词: 烟气余热, 有机朗肯循环, 热源参数, 热经济性, 经济性

Abstract: This paper established the organic Rankine cycle(ORC) systems which utilized low-temperature flue gas as heat source to generate electricity. 2 Ggroups of single working fluids were researched. By changing heat source parameters to alter the heat absorption of the systems,the thermal equilibrium method was used to calculate thermal performance. Both thermodynamics and economics were taken into consideration to analyze the performance of systems with different working fluids. The result revealed that the two working fluids with the same group retained the similar parameters of network and heat consumption rate with the similar regularity of changes,while the LEC(levelized electricity cost)and DPP (discounted payback period)were not similar. Under the condition studied,the evaporation temperature optimized by economics was about 8-10℃ higher than that by thermodynamics. The comprehensive comparison showed that R600a was the best choice. The thermal performance of system using R236ea was better than R600,but the LEC of system using R600 was lower than R236ea. Compared to R236ea,R600 had obvious advantage at the aspect of economics.

Key words: flue gas waste heat, organic Rankine cycle, heat source parameter, thermodynamic performance, economic performance

中图分类号:

TK12

韩中合, 许鸿胜, 范伟, 赵若丞, 王智. 低温烟气有机郎肯循环ORC系统热力性能与经济性的对比分析[J]. 化工进展, 2017, 36(11): 4010-4016.

HAN Zhonghe, XU Hongsheng, FAN Wei, ZHAO Ruocheng, WANG Zhi. Comparison of thermodynamic performance and economic efficiency of ORC system for low temperature flue gas[J]. Chemical Industry and Engineering Progress, 2017, 36(11): 4010-4016.

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低温烟气有机郎肯循环ORC系统热力性能与经济性的对比分析

Comparison of thermodynamic performance and economic efficiency of ORC system for low temperature flue gas

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