Numerical Simulation for Flow Characteristics in Thermosyphon Elevation Tube with Lunate Channel

张联英 1; 吴裕远 2; 姜华 2

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Numerical Simulation for Flow Characteristics in Thermosyphon Elevation Tube with Lunate Channel

更新时间：2025-12-08

- Numerical Simulation for Flow Characteristics in Thermosyphon Elevation Tube with Lunate Channel
- Vol. 42, Issue 1, Pages: 17-22(2008)
- 作者机构：
  
  西安交通大学人居环境与建筑工程学院,西安,710049
- 作者简介：
- 基金信息：
- DOI：
  CLC： TK124
- Online First：10 January 2008，
  
  Published：2008
- 稿件说明：
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张联英 1, 吴裕远 2, 姜华 2. Numerical Simulation for Flow Characteristics in Thermosyphon Elevation Tube with Lunate Channel[J]. 2008, 42(1): 17-22.
DOI：

张联英 1, 吴裕远 2, 姜华 2. Numerical Simulation for Flow Characteristics in Thermosyphon Elevation Tube with Lunate Channel[J]. 2008, 42(1): 17-22. DOI：

摘要

应用两相流和溶液热力学的基本理论对热虹吸提升管的流动特性进行了分析研究

采用两相流分相模型对其进行了数值计算

得出了对应不同截面、不同浸没高度下加热负荷与浓溶液的提升量、蒸汽发生量、浓溶液最大提升高度及稀溶液最小浸没高度的关系曲线.分析结果表明:在小加热负荷下(7.0 kW左右)

直径比为19/32的组合套管的提升高度优于其他套管

最大提升高度高于直径比为16/32的组合套管.计算结果与实验结果符合良好

为该类型热虹吸泵的设计和运行提供了依据.

Abstract

The flow characteristics of thermosyphon elevation tube are investigated following the fundamental theory of two-phase flow and solution thermal dynamics. The separated phase flow model for two phases is applied to numerical simulation. The relationships of heat load with amount of elevated solution

amount of vapor

the maximum height of elevated solution

the minimum submersed depth of solution at different cross section and different submersed depth

are plotted to indicate that the elevation effect of the pipes with diameter ratio 19/32 outperforms the others

and the maximum height of elevated solution is higher than 16/32 pipes.The numerical predictions coincide well with the experimental data.

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references

MONDE M. Measurement of liquid film thickness during passage of bubbles in a vertical rectangular channel [J]. ASME Trans J Heat Transfer, 1990, 112(2): 255-258.

阕雄才. 热虹吸管内沸点位置的确定:无泵太阳能吸收式制冷机机理研究之三[J]. 上海交大科技,1989(4): 31-36.

王古进. 小型直燃式溴化锂吸收式制冷机发生器研究[D]. 西安:西安交通大学能源与动力工程学院,1991.

鲁钟琪. 两相流与沸腾传热[M]. 北京:清华大学出版社,2002:62.

张联英. 低品位热能驱动吸收式空调及海水淡化系统关键技术研究[D]. 西安:西安交通大学能源与动力工程学院,2005.

陈之航,曹柏林,赵在三.气液双相流动和传热[M].北京:机械工业出版社,1983.

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