大连理工大学学报2024，Vol.64Issue(4)：361-367,7.DOI:10.7511/dllgxb202404005
混合制冷工质波转子结构性能优化
Structural performance optimization of mixed refrigerant wave rotor
摘要
Abstract
Embedding the wave rotor into the auto-cascade refrigeration cycle,using motion excitation wave and expansion wave can realize the direct exchange of volume work within the equipment channel,which shortens the energy transfer path of high and low pressure flow units and is beneficial to improving the energy efficiency of the refrigeration system.The wave diagram of R134a/R23 mixed refrigerant wave rotor with 1.8 of expansion ratio and 1.25 of pressure ratio is completed by means of numerical calculation.Considering performance effects of the circumferential component of the inlet and outlet fluid velocities of the wave rotor equipment,the optimization of the tilted angle of the inlet and outlet is completed.It is found that the structure with medium pressure outlet tilted at 6°,high pressure inlet tilted at 3° and low pressure inlet tilted at 2° in the rotation direction can increase the theoretical entrainment ratio of the wave rotor from 33.20％to 37.29％,which achieves the optimal induced performance of the wave rotor with small expansion ratio.According to the wave diagram,axial dissipation of the contact surface of high and low pressure flow units is small and no sharp decrease in the entrainment ratio is found when the axial dimension is shortened by 50％on the basis of the original dimension.The conclusion is of great significance to shortening the axial dimension of the wave rotor.关键词
气波制冷增压/真实气体/结构优化/自复叠制冷Key words
gas wave refrigeration supercharging/real gas/structural optimization/auto-cascade refrigeration分类
化学化工引用本文复制引用
张璐伟,代玉强,张德聪,俞宁..混合制冷工质波转子结构性能优化[J].大连理工大学学报,2024,64(4):361-367,7.基金项目
国家重点研发计划项目(2018YFA0704602). （2018YFA0704602）
