Performance Analysis of Low Temperature Waste Heat Power Generation Cycle with Single Working Fluid

doi:10.11930/j.issn.1004-9649.202007105

Abstract

Abstract: In order to improve the efficiency and economy of energy utilization, promote the application of the organic Rankine cycle system in the field of low-temperature waste heat power generation. In this paper, by establishing a thermodynamic model and programming with MATLAB software, calling the NIST Refprop database, selecting hexafluoropropane as the circulating working fluid, and simulating and analyzing various aspects of the organic Rankine cycle system performance. Based on the use of thermodynamic indicators such as cycle output power, exergy efficiency and thermal efficiency to study the thermal performance of the system, the heat exchange area and the annual CO₂ emission reduction were used as indicators to evaluate the economic performance and environmental performance of the system. The research results show that: when the condensing pressure is 150 kPa, the system performance can be ensured to achieve the best performance when the single variable is used. In the case of multiple variables, the increase of the heat source temperature will greatly reduce the economic performance, and effectively improve the thermal performance and environmental performance of the system. Comprehensively consider the temperature of the heat source to be 155 ℃~185 ℃; when the performance of the system is guaranteed to be the best, The evaporation pressure changes in different forms with the temperature of the heat source, but it never exceeds 3350 kPa.

Key words: low-grade thermal energy, waste heat power generation, organic Rankine cycle, simulation calculation, performance analysis

GENG Zhi, LIU Enshuai, XU Xipu, GU Yujiong, WEN Zhenhua, LI Renfeng. Performance Analysis of Low Temperature Waste Heat Power Generation Cycle with Single Working Fluid[J]. Electric Power, 2021, 54(9): 198-207.

Add to citation manager EndNote|Ris|BibTeX

URL: https://www.electricpower.com.cn/EN/10.11930/j.issn.1004-9649.202007105

https://www.electricpower.com.cn/EN/Y2021/V54/I9/198

References

[1] 王华, 王辉涛. 低温余热发电有机朗肯循环技术[M]. 北京: 科学出版社, 2010.
[2] 张金良, 周秀秀. 基于系统动力学的发电行业市场型碳减排政策影响分析[J]. 中国电力, 2020, 53(6): 114-123
ZHANG Jinliang, ZHOU Xiuxiu. Impact analysis of market-driented carbon emission reduction policies in power generation industry based on system dynamics[J]. Electric Power, 2020, 53(6): 114-123
[3] WANG L B, BU X B, LI H S. Multi-objective optimization and off-design evaluation of organic Rankine cycle (ORC) for low-grade waste heat recovery[J]. Energy, 2020, 203: 117809.
[4] RAY S K, MOSS G. Fluorochemicals as working fluids for small Rankine cycle power units[J]. Advanced Energy Conversion, 1966, 6(2): 89-102.
[5] 姜亮. 低品位余热ORC发电系统的性能评价及系统优化[D]. 上海: 上海交通大学, 2015.
JIANG Liang. Performance evaluation and optimization of ORC power generation system recovering low-grade waste heat[D]. Shanghai: Shanghai Jiaotong University, 2015.
[6] 能源科学学科发展战略研究组. 2011～2020年我国能源科学学科发展战略报告[M]. 2010.
[7] MONDEJAR M E, AHLGREN F, THERN M, et al. Quasi-steady state simulation of an organic Rankine cycle for waste heat recovery in a passenger vessel[J]. Applied Energy, 2017, 185: 1324-1335.
[8] YANG M H, YEH R H. Analyzing the optimization of an organic Rankine cycle system for recovering waste heat from a large marine engine containing a cooling water system[J]. Energy Conversion and Management, 2014, 88: 999-1010.
[9] DESAI N B, BANDYOPADHYAY S. Thermo-economic analysis and selection of working fluid for solar organic Rankine cycle[J]. Applied Thermal Engineering, 2016, 95: 471-481.
[10] YANG S C, HUNG T C, FENG Y Q, et al. Experimental investigation on a 3 kW organic Rankine cycle for low-grade waste heat under different operation parameters[J]. Applied Thermal Engineering, 2017, 113: 756-764.
[11] 罗向龙, 徐乐, 谭立锋, 等. R245fa有机朗肯循环余热发电系统火用分析[J]. 节能技术, 2012, 30(2): 131-135, 141
LUO Xianglong, XU Le, TAN Lifeng, et al. Exergy analysis of an organic Rankine cycle for waste heat power generation with R245fa[J]. Energy Conservation Technology, 2012, 30(2): 131-135, 141
[12] 王怀信, 王大彪, 张圣君. 低温有机朗肯循环系统参数的理论与实验优化[J]. 天津大学学报(自然科学与工程技术版), 2014, 47(5): 408-413
WANG Huaixin, WANG Dabiao, ZHANG Shengjun. Theoretical and experimental optimization of low-temperature organic Rankine cycle system parameters[J]. Journal of Tianjin University (Science and Technology), 2014, 47(5): 408-413
[13] FERRARA F, GIMELLI A, LUONGO A. Small-scale concentrated solar power (CSP) plant: ORCs comparison for different organic fluids[J]. Energy Procedia, 2014, 45: 217-226.
[14] 贺超, 刘朝, 高虹, 等. 工业余热有机朗肯循环参数优化和分析[J]. 工程热物理学报, 2012, 33(12): 2042-2046
HE Chao, LIU Chao, GAO Hong, et al. Parameters optimization and performance analysis of organic Rankine cycle for industrial waste heat recovery[J]. Journal of Engineering Thermophysics, 2012, 33(12): 2042-2046
[15] 韩中合, 叶依林, 刘赟. 不同工质对太阳能有机朗肯循环系统性能的影响[J]. 动力工程学报, 2012, 32(3): 229-234
HAN Zhonghe, YE Yilin, LIU Yun. Effect of working fluids on performance of solar organic Rankine cycles[J]. Journal of Chinese Society of Power Engineering, 2012, 32(3): 229-234
[16] 常海青, 张燕. 锅炉烟气余热深度利用及减排技术的研究与应用[J]. 中国电力, 2016, 49(10): 43-48
CHANG Haiqing, ZHANG Yan. Research and application of in-depth boiler flue gas waste heat utilization and emission reduction technology[J]. Electric Power, 2016, 49(10): 43-48
[17] 顾煜炯, 陈礼敏, 耿直. 不同太阳能热源下混合工质ORC系统性能分析[J]. 发电技术, 2018, 39(2): 177-187
GU Yujiong, CHEN Limin, GENG Zhi. Performance analysis of ORC system for non-zeotropic mixtures under different solar energy sources[J]. Power Generation Technology, 2018, 39(2): 177-187
[18] 黄晓艳, 王华, 王辉涛. R245fa传热特性的实验研究[J]. 武汉理工大学学报, 2011, 33(3): 67-71
HUANG Xiaoyan, WANG Hua, WANG Huitao. Experimental study on evaporating heat transfer characteristics of HFC-245fa[J]. Journal of Wuhan University of Technology, 2011, 33(3): 67-71
[19] CAMPOS RODRÍGUEZ C E, ESCOBAR PALACIO J C, VENTURINI O J, et al. Exergetic and economic comparison of ORC and Kalina cycle for low temperature enhanced geothermal system in Brazil[J]. Applied Thermal Engineering, 2013, 52(1): 109-119.
[20] ZHANG S J, WANG H X, GUO T. Performance comparison and parametric optimization of subcritical organic Rankine cycle (ORC) and transcritical power cycle system for low-temperature geothermal power generation[J]. Applied Energy, 2011, 88(8): 2740-2754.