热端管长度对涡流管性能影响的实验研究  

Experimental Study on the Length of Vortex Hot Tube Effect on the Performance of Vortex Tube

作　　者：何曙[1] 吴玉庭[1] 马重芳[1] 郭建[1] 丁雨[1] 葛满初[2] 

机构地区：[1]北京工业大学环境与能源工程学院,"传热强化与过程节能"教育部重点实验室,"传热与能源利用"北京市重点实验室,北京100022 [2]中国科学院工程热物理研究所,北京100084

出　　处：《制冷空调与电力机械》2005年第4期4-7,共4页Refrigeration Air Conditioning & Electric Power Machinery

基　　金：国家重点基础研究发展计划(973)资助项目(TG2000026304)

摘　　要：研制了不同热端管长度的涡流管,并以空气作为工作介质,通过实验研究了热端管长度对涡流管能量分离性能的影响。实验结果表明:对于常温涡流管,在入口压力为0.5Mpa的情况下,相同冷流率时,随着热端管长度的增加,涡流管的制冷温度效应、单位制冷量和制冷系数增加,而其制热温度效应无显著的规律;对同一热端管长的涡流管,随着冷流率的增加,涡流管的制冷温度效应、单位制冷量和制冷系数增加,且在冷流率为40%-50%时出现峰值,而制热温度效应随冷流率的增加而增加,在冷流率范围内未出现峰值。Vortex tubes of different length were developed and the effect of the length on the performance of vortex tube was investigated by experiment with air as medium. The experiment results show that the temperature difference between inlet and cold air outlet, the unit refrigeration and the coefficient of performance increases with the increase of the length of vortex tube under the same cold fraction with ambient temperature and inlet pressure of 0.5MPa,while the temperature difference between the hot air outlet and inlet didn＇t have remarkable rule. As to single vortex tube, the temperature difference between inlet and cold air outlet, the unit refrigeration and the coefficient of performance increased with the increase of the cold fraction, then reaches top when the cold fraction was 40%-50%. And the temperature difference between the hot air outlet and inlet is increasing in the cold fraction span range under the same experimental condition.

关 键 词：涡流管 能量分离装置 热端管长度 工作介质 制冷温度效应 温差 

分 类 号：TB619.1[一般工业技术—制冷工程]