变海拔下两级空压机气动性能严重下降,无法满足高功率密度燃料电池的动态需求,为拓宽两级空压机工作极限,采用数值模拟方法研究典型工况下的气动性能。结果表明：随着进气压力的降低,两级空压机压比降低32.73%,等熵效率降低34.60%;随着进气温度的升高,两级空压机压比升高23.27%,等熵效率降低12.76%;随着空压机转速的增大,两级空压机压比升高145%,等熵效率先升高后下降,在设计转速附近达到最大值,为66.83%。
Abstract
The aerodynamic performance of a two-stage air compressor under variable altitude is severely degraded and cannot meet the dynamic demands of high-power-density fuel cells. In order to broaden the working limit of the two-stage air compressor, numerical simulation was used to study the aerodynamic performance under typical working conditions. The results show that： with the decrease of inlet pressure, the pressure ratio of the two-stage air compressor decreases by 32.73%, and the isentropic efficiency decreases by 34.60%; with the increase of inlet temperature, the pressure ratio of the two-stage air compressor increases by 23.27%, and the isentropic efficiency decreases by 12.76%; with the increase of rotational speed, the pressure ratio of the two-stage compressor increases by 145%, and the isentropic efficiency increases first and then decreases, reaching a maximum value of 66.83% near the design speed.
关键词
离心空压机 /
燃料电池 /
叶轮 /
数值模拟 /
气动性能 /
变海拔
Key words
centrifugal compressors /
fuel cells /
impellers /
numerical simulation /
aerodynamic performance /
variable altitude
{{custom_sec.title}}
{{custom_sec.title}}
{{custom_sec.content}}
参考文献
[1] 马涛, 孙佰清, 郭海凤, 等. 我国中长期经济发展中氢能消费量及CO2减排效果估算[J]. 太阳能学报, 2010, 31(11): 1521-1526.
MA T, SUN B Q, GUO H F, et al.Evaluation on hydrogen consumption and its reduction of CO2 emission of Chinese medium and long-term economic development[J]. Acta energiae solaris sinica, 2010, 31(11): 1521-1526.
[2] 陶丽蓉, 刘煜, 孔红兵, 等. 质子交换膜燃料电池整车辅助散热系统设计建模及分析[J]. 太阳能学报, 2023, 44(4): 299-305.
TAO L R, LIU Y, KONG H B, et al.Design, modeling and analysis of auxiliary heat dissipation system for proton exchange membrane fuel cell vehicle[J]. Acta energiae solaris sinica, 2023, 44(4): 299-305.
[3] 刘志祥, 李伦, 丁一, 等. 包含离心式空压机的大功率PEMFC空气系统喘振研究[J]. 太阳能学报, 2018, 39(1): 233-239.
LIU Z X, LI L, DING Y, et al.The surge research of heavy duty PEMFC air system with a centrifugal compressor[J]. Acta energiae solaris sinica, 2018, 39(1): 233-239.
[4] ZHANG H T, LI X G, LIU X Z, et al.Enhancing fuel cell durability for fuel cell plug-in hybrid electric vehicles through strategic power management[J]. Applied energy, 2019, 241: 483-490.
[5] 张众杰, 刘瑞林, 杨春浩, 等. 变海拔两级离心压气机特性试验研究[J]. 车用发动机, 2020(2): 42-48.
ZHANG Z J, LIU R L, YANG C H, et al.Experimental investigation on characteristics of two-stage centrifugal compressor at variable altitudes[J]. Vehicle engine, 2020(2): 42-48.
[6] LEWIS J, CLEMENTONI E, COX T, et al.Effect of compressor inlet temperature on cycle performance for a supercritical carbon dioxide brayton cycle[C]//The 6th International Supercritical CO2 Power Cycles Symposium, Pittsburgh, Pennsylvania, 2018.
[7] CLEMENTONI E M, COX T L.Effect of compressor inlet pressure on cycle performance for a supercritical carbon dioxide brayton cycle[C]//ASME Turbo Expo 2018: Turbomachinery Technical Conference and Exposition, 2018, Oslo, Norway, 2018.
[8] 吴刚, 张虹, 魏名山. 离心压气机高原特性数值计算与分析[J]. 车辆与动力技术, 2014(4): 1-5.
WU G, ZHANG H, WEI M S.Numerical calculation and analysis of the plateau characteristics of centrifugal compressor[J]. Vehicle & power technology, 2014(4): 1-5.
[9] 李书奇, 刘畅, 胡力峰, 等. 高原环境增压器离心压气机特性试验研究[J]. 机械工程学报, 2016, 52(20): 151-158.
LI S Q, LIU C, HU L F, et al.Experimental investigation on centrifugal compressor performance characteristics of plateau environment for vehicle turbocharger[J]. Journal of mechanical engineering, 2016, 52(20): 151-158.
[10] 朱大鑫. 涡轮增压与涡轮增压器[M]. 北京: 机械工业出版社, 1992.
ZHU D X.Turbocharging and turbochargers[M]. Beijing: China Machine Press, 1992.
[11] 祁大同. 离心式压缩机原理[M]. 北京: 机械工业出版社, 2018: 48-49.
QI D T.Principle of centrifugal compressors[M]. Beijing: China Machine Press, 2018: 48-49.
[12] 张虹, 吴刚, 魏名山, 等. 高原环境下离心式压气机通用特性研究[J]. 兵工学报, 2015, 36(11): 2032-2037.
ZHANG H, WU G, WEI M S, et al.Research on non-dimensional characteristics of centrifugal compressor under altitude environment[J]. Acta armamentarii, 2015, 36(11): 2032-2037.
[13] 吴云飞. 车载燃料电池离心式空压机高效区范围扩展优化研究[D]. 长沙: 湖南大学, 2021.
WU Y F.Study on expansion optimization of high efficiency zone of vehicle-borne fuel cell centrifugal air compressor[D]. Changsha: Hunan University, 2021.
[14] TONG Z T, YANG X M, SHANG P X, et al.Effect of inlet condition on the performance curve of a 10 MW supercritical carbon dioxide centrifugal compressor[J]. Machines, 2022, 10(5): 359.
基金
国家自然科学基金（52305257）; 天津市科技计划（22JCQNJC00110）; 河北省自然科学基金（E2023202168）
PDF(1666 KB)
