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Pumping criterion and dynamic measurements of an inverted U-shape heat driven pump using microchannels and miniature check valves
Xu, JL; Shi, X
2005-06-01
发表期刊EXPERIMENTAL THERMAL AND FLUID SCIENCE
卷号29期号:5页码:579-590
摘要We demonstrated an inverted U-shape heat driven pump consisting of a microchannel heat sink, two vertical branches and two miniature check valves. A new criterion, which is governed by the fluid physical properties, the geometry effect and the heat transfer rates at various oscillating stages, was developed. The theory can explain the operating range of the applied heating power. The dynamic measurements with a high speed data acquisition system shows that periodically a full cycle can be subdivided into a short liquid suction stage, a bulk boiling and a fluid discharge stage, followed by a pressure decrease stage with both of the valves closed. The average mass flow rate is small and can be computed by the energy conservation equation. The cycle period is shortened with increasing the applied heating power. The wall temperatures of the microchannel heat sink are oscillating with small amplitudes but they are slightly higher than the saturated temperature of the working fluid by several degrees. Deionized water was selected as the working fluid. Finally a closed loop heat driven pump design incorporating the microchannel heat sink and the condenser fin heat sink is proposed. (c) 2004 Elsevier Inc. All rights reserved.
文章类型Article
关键词Heat Driven Pump Fluid Discharge/suction Criterion Oscillating Thermal Performance
WOS标题词Science & Technology ; Physical Sciences ; Technology
DOI10.1016/j.expthermflusci.2004.08.004
研究领域[WOS]Thermodynamics ; Engineering ; Physics
收录类别SCI
语种英语
WOS类目Thermodynamics ; Engineering, Mechanical ; Physics, Fluids & Plasmas
WOS记录号WOS:000228536600004
引用统计
文献类型期刊论文
条目标识符http://ir.giec.ac.cn/handle/344007/10217
专题中国科学院广州能源研究所
作者单位Chinese Acad Sci, Guangzhou Inst Energy Convers, Guangzhou 510640, Peoples R China
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Xu, JL,Shi, X. Pumping criterion and dynamic measurements of an inverted U-shape heat driven pump using microchannels and miniature check valves[J]. EXPERIMENTAL THERMAL AND FLUID SCIENCE,2005,29(5):579-590.
APA Xu, JL,&Shi, X.(2005).Pumping criterion and dynamic measurements of an inverted U-shape heat driven pump using microchannels and miniature check valves.EXPERIMENTAL THERMAL AND FLUID SCIENCE,29(5),579-590.
MLA Xu, JL,et al."Pumping criterion and dynamic measurements of an inverted U-shape heat driven pump using microchannels and miniature check valves".EXPERIMENTAL THERMAL AND FLUID SCIENCE 29.5(2005):579-590.
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