Analysis of heat flow diagram of small-scale power generation system:Innovative approaches for improving techno-economic and ecological indices  

作　　者：SHAGDAR Enkhbayar SHUAI Yong GUENE LOUGOU Bachirou GANBOLD Enkhjin CHINONSO Ogugua Paul TAN HePing 

机构地区：[1]Key Laboratory of Aerospace Thermophysics of Ministry of Industry and Information Technology,Harbin Institute of Technology,Harbin 150001,China [2]School of Energy Science and Engineering,Harbin Institute of Technology,Harbin 150001,China [3]School of Energy Science and Power Engineering,Mongolian University of Science and Technology,Ulaanbaatar 14191,Mongolia [4]School of Mechanical and Power Engineering,Harbin University of Science and Technology,Harbin 150001,China

出　　处：《Science China(Technological Sciences)》2020年第11期2256-2274,共19页中国科学（技术科学英文版）

基　　金：This work was supported by the China National Key Research and Development Plan Project(Grant No.2018YFA0702300);the National Natural Science Foundation of China(Grant No.51522601);and the China Postdoctoral Science Foundation Fund(Grant No.2019M651284).

摘　　要：In this paper,the heat flow diagram of steam turbine model K-6-35 has been analyzed for innovative approaches towards improving the techno-economic and ecological indices of the small-scale power generation system.The numerical analysis is performed using IPSEpro process simulation software based on heat balance method under four different cases.It was found that the study of Solar Assisted Power Generation(SAPG)system has important practical significance in power generation with minimum pollutants and maximum efficiency.Both fuel-saving(FS)and power-boosting(PB)operation modes of the SAPG system are considered.Various types of stand-alone solar thermal power plants exhibited very low overall efficiency with many ecological advantages compared to the conventional thermal power plant based on fossil fuels.Besides,SAPG system with FS mode presented higher techno-economic indices and operation performance.An important reduction in fuel consumption and pollutant emissions could be obtained with SAPG system.Considering the hourly,daily,monthly,and yearly amount of saved fuel and reduced pollutants in the whole power plant,the SAPG system with FS mode can largely contribute to high ecological indices power generation.A thermal efficiency increased by 1.31%with specific equivalent fuel consumption decreased by 22.54 g/kWh was obtained with SAPG system.The coal consumption was reduced by 4.75%when SAPG system operates in FS mode.

关 键 词：heat flow diagram solar assisted power generation parabolic trough collector solar thermal power plant techno-economic indices genetic algorithm 

分 类 号：TM615[电气工程—电力系统及自动化]