Performance analysis of organic Rankine cycle power generation system with sinter cooling gas waste heat

被引：0
作者：
Feng J. [1 ]
Pei G. [1 ]
Dong H. [2 ]
Zhang S. [2 ]
机构：
[1] School of Engineering and Science, University of Science and Technology of China, Hefei
[2] School of Metallurgy, Northeastern University, Shenyang
来源：
Zhongnan Daxue Xuebao (Ziran Kexue Ban)/Journal of Central South University (Science and Technology) | 2019年 / 50卷 / 02期
基金：
中国博士后科学基金; 中国国家自然科学基金;
关键词：
Organic Rankine cycle; Sintering; Thermodynamic performance; Waste heat power generation;
D O I：
10.11817/j.issn.1672-7207.2019.02.028
中图分类号：
学科分类号：
摘要：
The cooling flue gas discharged from the end outlet of sinter annular cooler was taken as research object, with the mass flow and average temperature of cooling flue gas being 7.6×105 m3/h and 170 ℃, respectively. Based on the organic Rankine cycle(ORC) system of low temperature waste heat, the R123,R245fa and R600 were selected as the circular organic working fluids, and the effects of evaporation temperature, superheat degree and condensing temperature on the system performance were studied and analyzed. The results show that with the increase of evaporation temperature, superheat degree and condensing temperature, the net output power and total irreversible loss of system decrease gradually. The system thermal efficiency increases with the increase of evaporation temperature, and decreases with the increase of condensing temperature. The increase of superheat degree has little effect on the system thermal efficiency. When the operating condition of system is certain, the net output power of R600 is the maximum. When the system heat efficiency of R123 is the highest, and the total irreversible loss is the least. In the actual operation process, in order to obtain the larger net output power of system, the R600 should be chosen as the circular organic working fluids, with the export working fluid of evaporator being in the state of saturated steam, and the lower condensing temperature of working fluid should be used. © 2019, Central South University Press. All right reserved.
引用
收藏
页码：466 / 473
页数：7
相关论文
共 23 条
  • [1] Cai J., Wang J., Chen C., Et al., Waste heat recovery and utilization in iron and steel industry, Iron and Steel, 42, 6, pp. 1-7, (2007)
  • [2] Dong H., Lin H., Zhang H., Et al., Thermal test and analysis of sintering cooling system, Iron and Steel, 46, 11, pp. 93-98, (2011)
  • [3] Dong H., Zhao Y., Cai J., Et al., On the air leakage problem in sintering cooling system, Iron and Steel, 47, 1, pp. 95-99, (2012)
  • [4] Wang Z., Zhou N., Luo L., Et al., Comparison of thermodynamic performance for waste heat power generation system with different low temperature working fluids, Journal of Central South University(Science and Technology), 41, 6, pp. 2424-2429, (2010)
  • [5] Han Z., Du Y., Wang Z., Medium selection of organic Rankine cycle (ORC) in low temperature waste heat, Chemical Industry and Engineering Progress, 33, 9, pp. 2279-2285, (2014)
  • [6] Li D.X., Zhang S.S., Wang G.H., Selection of organic Rankine cycle working fluids in the low-temperature waste heat utilization, Journal of Hydrodynamics, 27, 3, pp. 458-464, (2015)
  • [7] Wang E.H., Zhang H.G., Fan B.Y., Et al., Study of working fluid selection of organic Rankine cycle(ORC) for engine waste heat recovery, Energy, 36, 5, pp. 3406-3418, (2011)
  • [8] Chen H., Goswami D.Y., Stefanakos E.K., A review of thermodynamic cycles and working fluids for the conversion of low-grade heat, Renewable and Sustainable Energy Reviews, 14, 9, pp. 3059-3067, (2010)
  • [9] Long R., Bao Y.J., Huang X.M., Et al., Exergy analysis and working fluid selection of organic Rankine cycle for low grade waste heat recovery, Energy, 73, 7, pp. 475-483, (2014)
  • [10] Kaska O., Energy and exergy analysis of an organic Rankine for power generation from waste heat recovery in steel industry, Energy Conversion and Management, 77, 1, pp. 108-117, (2014)
123