| 摘要: |
| 为改善多管导流型气泡泵工作过程中气泡分配不均，提高Einstern制冷循环的性能，本文在大气压下以饱和水为工质，通过改变提升管数量，对比研究了普通多管导流型气泡泵及均流式多管导流型气泡泵的提升性能。结果表明：在气泡泵提升过程中，低功率下气泡泵的总提升量增加幅度在较大和平缓现象之间不停的交替出现，但在高功率下气泡泵的总提升量增加幅度较缓的过程所持续的时间越来越短。如管数量为3根，管径为10 mm，沉浸比为0.5，加热功率为450 W时，运行75.2 min时出水管开始有水流出，在75.2~100.1 min时，液体的总提升量增加幅度在较大和平缓现象之间不停的交替出现。在添加均流器工况下，随着管数量倍增，气泡分配不均问题得以改善，如管径为10 mm，沉浸比为0.4，管数量为1根时，普通多管导流型气泡泵最大提升速率为15.00 g/s；管数量为3根时，最大提升速率为26.50 g/s；有均流器下，管数量为3根时，最大提升速率为36.50 g/s。可知均流器的网孔孔径和安装位置对气泡泵的提升性能有一定影响。 |
| 关键词: Einstein制冷 气泡泵 均流器 实验研究 |
| DOI： |
| Received:June 27, 2017 |
| 基金项目:国家自然科学基金青年项目（51606125）和上海市教育委员会科研创新项目(13ZZ117)资助。 |
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| Experimental Research on Improving Performance of Guided Bubble Pump with Multiple Tubes with Current Equalizer |
|
Zhu Faming1, Liu Daoping2, Yang Liang2, Ma Han1
|
| (1.Enn Energy Services (Shanghai) Co. Ltd.;2.Institute of Refrigeration Technology, University of Shanghai for Science and Technology) |
| Abstract: |
| In order to improve uneven distribution of the bubbles in the guided bubble pump with multiple tubes in a working process, and enhance the performance of Einstein refrigeration, the performance of an ordinary guided bubble pump with multiple tubes and guided bubble pump with multiple tubes with current equalizer is compared. The experiment is conducted at atmospheric pressure with water as the working fluid, and the number of tubes in guided bubble pump is varied. Experimental results show that in the lifting process of the bubble pump the total lifting capacity increases in amplitude for two kinds of bubble pumps, and large improvement and little improvement appear alternately under low power. However, the elapsed time for little improvement of total lifting capacity is decreased for a bubble pump under high power. When tube number is 3, the diameter is 10 mm with an immersion ratio of 0.5, and a heating power of 450 W, water begins to exit from the outlet tube after 75.2 min. The lifting capacity between large and little improvement appear alternately from 75.2 min to 100.1 min. In addition, the problem of uneven distribution of the bubbles is improved by the tube number multiplication with a current equalizer, such as a diameter of 10 mm and immersion ratio of 0.4. When tube number is 1, the maximum liquid lifting capacity rate is 15.00 g/s in an ordinary guided bubble pump with multiple tubes; when the tube number is 3, maximum liquid lifting capacity rate is 26.50 g/s for the ordinary, but 36.50 g/s for that with current equalizer. Finally, mesh aperture and installation position of current equalizer are found to have a certain influence on the improvement of bubble pump performance. |
| Key words: Einstein refrigeration bubble pump current equalizer experiment research |
