摘要
为了辅助某换热器的性能实验并深入研究低温制冷机的性能,自行设计并搭建了一个两级复叠式低温预冷实验台。该实验台在低温级循环中加了一个回热器和冷凝器,当高温级循环辅助启动后,低温级循环可通过自身回热而实现独立运行并达到-60℃的制冷温度。采用分析方法对系统进行了分析,计算了各部件及整个系统的损失和效率,结果表明:高温级各部件的损失大于低温级各部件的损失;高温级气体冷却器及低温级回热器的效率较低。
This paper is to design and establish a pre-cooling test apparatus which is used to assist the research on a cryogenic heat exchanger and to investigate the refrigerator at lower temperature.An internal heat exchanger and condenser were employed in the low-temperature cycle,which made it possible the independent operation of the low-temperature stage at-60 ℃.The energy method is applied to analyze the thermodynamic character of components and the whole refrigeration cycle.The results show that energy loss of high-temperature stage is larger than that of low-temperature stage.Energy efficiencies of gas cooler and internal heat exchanger are lower.
出处
《河南科技大学学报（自然科学版）》
CAS
北大核心
2010年第6期29-32,共4页
Journal of Henan University of Science And Technology:Natural Science
基金
河南省重点科技攻关项目(102102210200)
河南省教育厅自然科学基金项目(2008B460009
2010B470007)
关键词
预冷
复叠
单级运行
分析
Pre-cooling
Cascade
Single stage operation
Exergy analysis
