气泡泵连续提升特性对单压吸收式制冷循环系统制冷性能至关重要。本文以Einstein制冷循环中的导流型气泡泵为研究对象，以水为工作介质，采用高速摄影仪和视觉光源对不同加热功率（400 W、600 W、800 W、1000 W、1200 W、1400 W）下三种管径（10 mm、12 mm、14 mm）对气泡泵连续提升性能的影响进行了可视化研究。实验结果表明，在低加热功率（400 W）时，气泡泵提升管内气泡量较少，随着提升管管径的增加，气泡泵液体提升总量逐渐减小，且在管径为14 mm时气泡泵不再有提升能力。加热功率为600~1000 W时,气泡泵提升管内气泡量增加，但气泡泵液体提升总量受提升管管径影响不明显。在高加热功率下（1200~1400 W），气泡泵提升管内气泡量剧烈增加，随着提升管管径的增加，气泡泵液体提升总量逐渐增加下。可视化实验作为研究气泡泵液体提升过程的新方法，对优化气泡泵结构及其液体提升性能有一定参考意义。

The continuous lift characteristics of the bubble pump are critical to the refrigeration performance of a single pressure absorption refrigeration cycle.This paper presents visualization research on the influence of three pipe diameters(10mm, 12mm, 14mm)on continuous improvement of bubble pump under different heating power(400W, 600W, 800W, 1000W, 1200W, 1400W) with high speed camera and visual light source by the dversion bubble pump in the Einstein refrigeration cycle as the research object, water as the working medium. The experiment shows that at low heating power (400 W), the amount of bubbles in the bubble pump riser tube is small. As the diameter of the riser tube increases, the total amount of liquid lift of the bubble pump gradually decreases. When the diameter is 14 mm, the bubble pump doesn"t have the lifting capacity anymore. When the heating power is 600~1000 W, the amount of bubbles in the bubble pump riser increases, but the total amount of bubble pump liquid lift is not significantly affected by the riser pipe diameter. Under high heating power (1200~1400 W), the amount of bubbles in the bubble pump riser increases sharply. As the diameter of the riser tube increases, the total amount of bubble pump liquid lift increases gradually. As a new method to study the liquid lifting process of bubble pump, visual experiment has certain reference significance to optimize the structure and liquid lifting performance of bubble pump.

国家自然科学基金青年项目；上海理工大学教师教学发展研究项目；国家煤加工与清洁化工程技术研究中心开放基金项目