Incorporation of manufacturing constraints into an algorithm for the determination of maximum heat transport capacity of extruded axially grooved heat pipes

Ömür, Cem; Uygur, A. Bilge; Horuz, I.; Isik, H. Gurguc; Ayan, Sadık; Konar, Murat

doi:10.1016/j.ijthermalsci.2017.09.016

Cited by 30 publications

(9 citation statements)

References 13 publications

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“…18Then the parameter Fv can be calculated by Eqs. (19) to (22) according to different situations. a. If…”

Section: Re R Qmentioning

confidence: 99%

“…It is also found that the wick structure with liquid tanks can improve the performance of loop heat pipes [18]. Studies show that the maximum heat transfer capacity can be achieved through rectangular or triangular grooves [19]. Moreover, the converging micro-channel heat pipe has been developed to obtain better capillary performance than the straight microchannel heat pipe [20].…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Plough-extrusion Forming for Making Micro-groove Heat Pipes on Hydrostatic Thrust Bearings of Heavy Machinery

Zhe

Li³

et al. 2020

SV-JME

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The present paper focuses on the manufacturing of micro-groove heat pipes on hydrostatic thrust bearings of heavy machinery. Special multitooth tools were designed for plough-extrusion forming heat pipes on flat copper. Experimental results were conducted to determine whether the plough-extrusion forming could achieve better performance than traditional wire electrical discharge. Furthermore, the processing using multi-tooth tool with 10 mm length, 55 tooth number, 0.25 mm tooth depth and 0.22 tooth top width was found to achieve the best performance among the six optional tools. The 50 mm/min forming speed was determined to acquire the best surface quality of the microgroove structure. Through heat transfer testing, the theoretical model for a micro-groove heat pipe made by plough-extrusion forming was also verified.

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“…18Then the parameter Fv can be calculated by Eqs. (19) to (22) according to different situations. a. If…”

Section: Re R Qmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Plough-extrusion Forming for Making Micro-groove Heat Pipes on Hydrostatic Thrust Bearings of Heavy Machinery

Zhe

Li³

et al. 2020

SV-JME

View full text Add to dashboard Cite

show abstract

Section: Introductionmentioning

confidence: 99%

“…They mainly contain a metal shell, wick structures, phase-change chamber, and working fluid. In general, the wick structure of a heat pipe can be divided into three types: groove type [3][4][5][6], copper powder sintering type [7][8][9], and compound type with groove, copper powder or other foam and mesh materials [10,11], as shown in Figure 1. The grooves are directly machined in the inner wall of the heat pipe, and they are open and have uniform cross sections, leading to the problem of insufficient capillary pressure.…”

Section: Introductionmentioning

confidence: 99%

Thermal Performances Investigation of Anti-Gravity Heat Pipe with Tapering Phase-Change Chamber

et al. 2020

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The objective of this study was to fabricate anti-gravity heat pipes with a tapering column phase-change chamber and changeable cross-sectional wick structure. The thermal performances of the anti-gravity heat pipes were experimentally investigated. Results show that the thermal resistances of the different heat pipes are less than 0.03 °C/W, except for the sharp conical chamber heat pipe under anti-gravity heating conditions (0.121 °C/W). Start-up times of different types of heat pipes are similar and the temperatures are steady within 3 to 5 min. The heat transfer ability of a conical chamber is always better than that of a cylindrical one. The performance of the sharp conical chamber heat pipe is the best under gravity assistance heating conditions. Contrarily, the blunt conical chamber heat pipe has the best heat transfer ability under anti-gravity heating conditions. Moreover, the heat transfer capability of the blunt conical chamber heat pipe is unaffected by the relative position of the heat and cold sources, which is suitable for constant temperature cooling applications with frequent switching of the heat and cold sources.

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“…Previous studies on grooved cylindrical heat pipes have reported thermal performances in either steady state or transient regime [1][2][3][4][5][6][7][8][9][10][11][12][13]. Tests on transient state regime have been paid a special attention since it is important to identify the thermal behavior of the heat pipes in these conditions as the electronic components are working in the most of time in transient conditions [9, 10].…”

Section: Introductionmentioning

confidence: 99%

Experimental Investigation on the Thermal Performance of a Heat Pipe-based Cooling System

Driss¹,

Maalej²,

Chouat³

et al. 2019

MMEP

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An experimental study is carried out in order to determine the thermal performances of a water-cooled heat pipe cooling system. An experiment rig is designed, fabricated and fully instrumented to test the cooling system prototype. The results show that the maximum heat transport capacity of the heat pipe increase with the water-cooling temperature; however, its overall thermal resistance decreases. Correlations for heat transfer in the evaporator and condenser sections are proposed. A model is also developed in order to determine the capillary limit as well as the heat transfer in the heat pipe. The model can predict the experimental results within-1.7 % and +7.9 % when estimating the capillary limit and underestimates the heat pipe overall thermal resistance within-17.8 % and-9.7 %; however, it overestimates the evaporator temperature within 4.4 % and 9.5 %.

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Incorporation of manufacturing constraints into an algorithm for the determination of maximum heat transport capacity of extruded axially grooved heat pipes

Cited by 30 publications

References 13 publications

Plough-extrusion Forming for Making Micro-groove Heat Pipes on Hydrostatic Thrust Bearings of Heavy Machinery

Plough-extrusion Forming for Making Micro-groove Heat Pipes on Hydrostatic Thrust Bearings of Heavy Machinery

Thermal Performances Investigation of Anti-Gravity Heat Pipe with Tapering Phase-Change Chamber

Experimental Investigation on the Thermal Performance of a Heat Pipe-based Cooling System

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