基于热力学第二定律的ORC蒸气发生器性能优化(<sup>1</sup> 昆明理工大学冶金与能源工程学院，云南 昆明 650093; <sup>2</sup> 云南大学建筑与规划学院，云南 昆明 650091)

Wei YU; Huitao WANG; Jianjun WANG; Daofei ZHU; Shuai TAO; Zhong GE; Jinglun HUANG; Lingling ZHAO

doi:10.11949/0438-1157.20190272

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基于热力学第二定律的ORC蒸气发生器性能优化(¹ 昆明理工大学冶金与能源工程学院，云南昆明 650093; ² 云南大学建筑与规划学院，云南昆明 650091)

流体力学与传递现象 | 更新时间：2020-06-24

- 基于热力学第二定律的ORC蒸气发生器性能优化(¹ 昆明理工大学冶金与能源工程学院，云南昆明 650093; ² 云南大学建筑与规划学院，云南昆明 650091)
- Performance optimization of ORC steam generator based on the second law of thermodynamics
- 化工学报 2019年70卷第11期页码：4238-4246
- 作者机构：
  
  1.Faculty of Metallurgical and Energy Engineering, Kunming University of Science and Technology, Kunming 650093,Yunnan, China
  2.School of Architecture and Planning, Yunnan University, Kunming 650091,Yunnan, China
- 作者简介：
- 基金信息：
  
  国家自然科学基金项目(51366005)
- DOI：10.11949/0438-1157.20190272
  中图分类号： TK 124
- 收稿：2019-03-21，
  
  修回：2019-06-27，
  
  纸质出版：2019-11-05
- 稿件说明：
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余伟, 王辉涛, 王建军, 朱道飞, 陶帅, 葛众, 黄靖伦, 赵玲玲. 基于热力学第二定律的ORC蒸气发生器性能优化[J]. 化工学报, 2019, 70(11): 4238-4246

YU Wei, WANG Huitao, WANG Jianjun, ZHU Daofei, TAO Shuai, GE Zhong, HUANG Jinglun, ZHAO Lingling. Performance optimization of ORC steam generator based on the second law of thermodynamics[J]. CIESC Journal, 2019, 70(11): 4238-4246
余伟, 王辉涛, 王建军, 朱道飞, 陶帅, 葛众, 黄靖伦, 赵玲玲. 基于热力学第二定律的ORC蒸气发生器性能优化[J]. 化工学报, 2019, 70(11): 4238-4246 DOI： 10.11949/0438-1157.20190272.

YU Wei, WANG Huitao, WANG Jianjun, ZHU Daofei, TAO Shuai, GE Zhong, HUANG Jinglun, ZHAO Lingling. Performance optimization of ORC steam generator based on the second law of thermodynamics[J]. CIESC Journal, 2019, 70(11): 4238-4246 DOI： 10.11949/0438-1157.20190272.

摘要

为了更深入地研究低温余热驱动ORC系统的设计与优化，建立了有机朗肯循环蒸气发生器主要热力性能计算模型，基于热力学第二定律，以蒸气发生器单位换热面积工质㶲升作为性能优化目标函数，选取了R245fa作为循环工质，在给定烟气进口温度以及保证循环工质在蒸气发生器出口为饱和蒸气条件下，对不同工况下的工质质量流速进行优化，并分析了在一系列换热管管径下，烟气入口温度、工质入口压力、管外对流传热系数、单根换热管烟气质量流量对目标函数及工质最优质量流速的影响。结果表明：工质入口压力与管外对流传热系数对最优工质质量流速影响显著，随着工质入口压力与管外对流传热系数的增大，最优工质质量流速增大，对应的换热管径减小；而烟气入口温度、单根换热管烟气质量流量对最优工质质量流速影响甚微。

Abstract

To study the design and optimization of the low temperature waste heat driven ORC system

the main thermal performance calculation model of the organic Rankine cycle steam generator was established. Based on the second law of thermodynamics

the exergy increase of unit heat transfer area in steam generator was proposed as optimization objective function. R245fa was selected as the working fluid. Under the condition of a given flue gas inlet temperature and ensuring the working fluid gets saturated at the steam generator exit

the optimal mass flow rate under different conditions are calculated

and the effects of inlet temperature of flue gas

inlet pressure of working fluid

convective heat transfer coefficient of outside pipe and the per tube mass flow of flue gas on objective function and optimal mass flow rate of working fluid are analyzed. The results show that the inlet pressure of the working fluid and the convective heat transfer coefficient outside the tube have a significant influence on the optimal mass flow rate

while the inlet temperature of the flue gas and the per tube mass flow of flue gas have little effect on the optimal mass flow rate. With the increase of the inlet pressure of the working fluid and the convective heat transfer coefficient outside the tube

the optimal mass flow rate increases.

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references

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基于热力学第二定律的ORC蒸气发生器性能优化(1 昆明理工大学冶金与能源工程学院，云南 昆明 650093; 2 云南大学建筑与规划学院，云南 昆明 650091)

Performance optimization of ORC steam generator based on the second law of thermodynamics

DOI：10.11949/0438-1157.20190272

摘要

Abstract

关键词

Keywords

references

基于热力学第二定律的ORC蒸气发生器性能优化(¹ 昆明理工大学冶金与能源工程学院，云南昆明 650093; ² 云南大学建筑与规划学院，云南昆明 650091)