哈尔滨工程大学学报2017，Vol.38Issue(4)：578-582,5.DOI:10.11990/jheu.201512059
压力对超临界二氧化碳布雷顿循环系统的影响
Influence of pressure on the thermal performance of the S-CO2 Brayton cycle
摘要
Abstract
To study the effects of the working temperatures and pressures,and heat exchanger (HX) characteristics on the thermal efficiency of the cycle,an S-CO2 recompression closed cycle model was established using numerical simulation.By adjusting the outlet pressure of the compressor,and the pressure ratio and pressure loss inside the HXs,the maximum thermal efficiency of the S-CO2 Brayton cycle was studied.Results show that both pressure and pressure ratio have an optimal value.When the pressure exceeds a certain value,the thermal efficiency of the cycle cannot be improved by further pressure enhancement.Pressure loss significantly affects the thermal efficiency of the cycle and,at the same time,affects the re-compression ratio of the cycle for maximum thermal efficiency.关键词
超临界二氧化碳/四代堆/布雷顿循环/再压缩/热效率/压力/压比/压降/换热器Key words
S-CO2/Gen IV/Brayton cycle/recompression/thermal efficiency/pressure/pressure ratio/pressure drop/heat exchanger分类
能源科技引用本文复制引用
梁墩煌,张尧立,赵英汝,房超,郭奇勋,洪钢..压力对超临界二氧化碳布雷顿循环系统的影响[J].哈尔滨工程大学学报,2017,38(4):578-582,5.基金项目
教育部重点实验室开发基金项目(ARES201402). （ARES201402）
