溴化锂浓度及纳米颗粒对气泡泵流型及提升量影响的实验研究

高洪涛; 刘昊然; 毛菲; 宋玉超

doi:10.16411/j.cnki.issn1006-7736.2018.03.016

大连海事大学学报 >

2018 , Vol. 44 >Issue 3: 108 - 114

DOI: https://doi.org/10.16411/j.cnki.issn1006-7736.2018.03.016

溴化锂浓度及纳米颗粒对气泡泵流型及提升量影响的实验研究

高洪涛 ,
刘昊然 ,
毛菲 ,
宋玉超

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(大连海事大学制冷与低温工程研究所，辽宁大连 116026)

高洪涛（1966—），男，博士，教授，博士生导师，研究方向：空调制冷、传热传质、可再生能源利用技术及仿生工程， E-mail：gaohongtao@dlum.cn.

收稿日期: 2018-02-02

修回日期: 2018-03-16

网络出版日期: 2024-06-27

基金资助

国家自然科学基金资助项目（50976015）；辽宁省科学技术计划项目（2010224002）；交通运输部海事局科技项目（2012_27）；中央高校基本科研业务费专项资金资助项目（3132016338）.

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Experimental investigation on effect of LiBr concentration and nano-particle on flow pattern and lifting capacity of bubble pump

GAO Hong-tao ,
LIU Hao-ran ,
MAO Fei ,
SONG Yu-chao

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（Institute of Refrigeration & Cryogenics Engineering, Dalian Maritime University, Dalian 116026，China）

Received date: 2018-02-02

Revised date: 2018-03-16

Online published: 2024-06-27

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摘要

为改善气泡泵特性，了解溴化锂溶液浓度和纳米颗粒添加量对气泡泵流型及溶液提升量影响、不同流型对溶液提升量影响十分必要.搭建两级气泡泵吸收式制冷实验台，利用高速摄像仪记录气泡在一级提升管内运动过程，探究不同条件下流型之间的差异以及对溶液提升量的影响.实验结果表明：管内先后出现泡状流、弹状流、段塞流、搅拌流和环状流五种流型；弹状流、段塞流和环状流对溶液提升量均随浓度的增大而增大，随纳米CuO添加量增大而增大，但纳米添加剂添加量大于0.25%后，溶液提升量不再提高.

关键词： 气泡泵流型; 纳米添加剂; 吸收式制冷; 实验研究

本文引用格式

高洪涛 , 刘昊然 , 毛菲 , 宋玉超 . 溴化锂浓度及纳米颗粒对气泡泵流型及提升量影响的实验研究[J]. 大连海事大学学报, 2018 , 44(3) : 108 -114 . DOI: 10.16411/j.cnki.issn1006-7736.2018.03.016

Abstract

In order to improve the characteristics of the bubble pump, it is necessary to understand the influence of the concentration of lithium bromide solution and the amount of nano-additive on the bubble pump flow pattern and solution lift, and the effect of different flow patterns on the solution lift. A two-stage bubble pump absorption refrigeration experiment bench was set up. Experiments were carried out by using the highspeed camera to record the movement of bubbles in a firststage riser to study the difference of flow patterns and their effect on the lift amount of solution under different conditions. The experimental results show that there are five flow patterns: bubbly flow, slug flow, plug flow, churn flow and annular flow in succession. The lift amount of solution in slug flow, plug flow and annular flow increases with increase of lithium bromide concentration in the solution and the amount of nano-CuO in the solution until the amount of nano-additives reaches 0.25%.

Key words： flow pattern in bubble pump; nano-additives; absorption refrigeration; experimental investigation

参考文献

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