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Experiment investigation on visualization and operating characteristics of closed loop plate oscillating heat pipe with parallel channels
Shi WX(史维秀); Pan LS(潘利生); Shi, WX (reprint author), Beijing Univ Civil Engn & Architecture, Dept Energy & Power Engn, Beijing 100044, Peoples R China.; Shi, WX (reprint author), Beijing Key Lab Heating Gas Supply Ventilating &, Beijing 100044, Peoples R China.
Source PublicationJOURNAL OF CENTRAL SOUTH UNIVERSITY
2016
Volume23Issue:9Pages:2410-2418
ISSN2095-2899
AbstractUsing ethanol or acetone as the working fluid, visualization of oscillations in steady state was observed visually by high-speed cameras, and temperature oscillating and heat transfer characteristics of closed-loop plate oscillating heat pipe with parallel channels (POHP-PC) were experimentally investigated by varying liquid filled ratios (50%, 70%, 85%), section scales (1 mmx1 mm and 1 mmx1.5 mm), inclination angles, working fluids and heating inputs. It was found that during operating there was mixed flow consisting of plug flow and annular flow in channels of oscillating heat pipe at steady-state. There was an equilibrium position for working fluid of condenser during oscillating, and periodic oscillations occurred up and down in the vicinity of equilibrium position. With heat input increasing, equilibrium position rose slowly as a result of vapor pressure of evaporation. Evaporation temperature oscillating amplitude possessed a trend of small-large-small and frequency trend was of small-large during steady-state. It may be generally concluded that temperature, whether evaporator or condenser, fluctuated sharply or rose continuously when oscillating heat pipe coming to dry burning state. Simultaneously, it was found that temperature difference of cooling water possibly dropped with heat input rising during dry burning state. Thermal resistance of No. 2 with acetone was lower than that of No. 1 during experiments, but No. 2 achieving heat transfer limit was earlier than No. 1. However, with ethanol, thermal resistance of No. 1 and No. 2 were similar with the heating input less than 110-120 W and filling ratios of 50% and 70%. And with filling ratio of 85%, heating transfer performance of No. 2 was better compared to No. 1 during all the experiments.
KeywordClosed Loop With Parallel Channels Plate Oscillating Heat Pipe Visualization Temperature Oscillating Heat Transfer Performance Filling Ratio Section Scale
DOI10.1007/s11771-016-3300-0
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Indexed BySCI ; EI
Language英语
WOS IDWOS:000388370900031
WOS Keywordclosed loop with parallel channels ; plate oscillating heat pipe ; visualization ; temperature oscillating ; heat transfer performance ; filling ratio ; section scale
WOS Research AreaMetallurgy & Metallurgical Engineering
WOS SubjectMetallurgy & Metallurgical Engineering
Funding OrganizationNational Natural Science Foundation of China [51306198] ; Beijing Key Lab of Heating, Gas Supply, Ventilating and Air Conditioning Engineering, China [NR2013K07] ; Beijing University of Civil Engineering and Architecture, China [331614013] ; Organization Department of Beijing, China [00921915023]
DepartmentLHD高效洁净燃烧(CPCR)
ClassificationQ3
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Document Type期刊论文
Identifierhttp://dspace.imech.ac.cn/handle/311007/59949
Collection高温气体动力学国家重点实验室
Corresponding AuthorShi, WX (reprint author), Beijing Univ Civil Engn & Architecture, Dept Energy & Power Engn, Beijing 100044, Peoples R China.; Shi, WX (reprint author), Beijing Key Lab Heating Gas Supply Ventilating &, Beijing 100044, Peoples R China.
Recommended Citation
GB/T 7714
Shi WX,Pan LS,Shi, WX ,et al. Experiment investigation on visualization and operating characteristics of closed loop plate oscillating heat pipe with parallel channels[J]. JOURNAL OF CENTRAL SOUTH UNIVERSITY,2016,23(9):2410-2418.
APA 史维秀,潘利生,Shi, WX ,&Shi, WX .(2016).Experiment investigation on visualization and operating characteristics of closed loop plate oscillating heat pipe with parallel channels.JOURNAL OF CENTRAL SOUTH UNIVERSITY,23(9),2410-2418.
MLA 史维秀,et al."Experiment investigation on visualization and operating characteristics of closed loop plate oscillating heat pipe with parallel channels".JOURNAL OF CENTRAL SOUTH UNIVERSITY 23.9(2016):2410-2418.
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