Structural Optimization of Axially Grooved Flat Miniature Heat Pipes

Gao, Min; Cao, Yiding; Beam, J. E.; Donovan, Brian F.

doi:10.1615/jenhheattransf.v7.i6.10

Cited by 6 publications

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“…The system may work passively without the requirement for any mechanical power input. However, the maximum heat flux that may be handled by a heat pipe or capillary pumped loop is typically about 20 W/cm 2 . Even if in some cases a higher heat flux may be handled with a special wick structure design, the temperature drop across the heat pipe could be on the order of 5–10 °C, which may not satisfy the temperature uniformity requirement.…”

Section: Introductionmentioning

confidence: 99%

Experimental study of a bellows-type reciprocating-mechanism driven heat loop

Cao

Gao³

2012

Int. J. Energy Res.

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SUMMARY The reciprocating‐mechanism driven heat loop (RMDHL) is a novel two‐phase heat transfer device that could find many important applications in energy systems and electronic cooling. However, the previous RMDHL is based on a solenoid driver that may have difficulty in handling a large amount of heat transfer rate over a long distance due to the driver's inability to provide a large displacement volume. To overcome this difficulty, a bellows‐type RMDHL demonstration model has been designed, fabricated, and tested. The results show that the bellows‐type RMDHL has successfully overcome the weakness of the solenoid driver and may be employed for applications involving large heat transfer rates and over a large surface area. Another advantage of the bellows‐type RMDHL is its potential to maintain an exceedingly uniform temperature over a relatively large surface. Additionally, the power consumption of the bellows driver was less than 5 W when the power input to the cold plate was up to 600 W, resulting in the ratio of driver's power input to the heat input to the cold plate being less than 1%, which represents a tenfold improvement over the solenoid‐based RMDHL. All these technical improvements over the previous RMDHL have demonstrated significant progresses towards a refined RMDHL system for energy and electronics cooling applications. Copyright © 2012 John Wiley & Sons, Ltd.

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Section: Introductionmentioning

confidence: 99%

Experimental study of a bellows-type reciprocating-mechanism driven heat loop

Cao

Gao³

2012

Int. J. Energy Res.

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“…Gao et al [6] showed that the effective thermal conductance of their flat miniature heat pipe (FMHP) could be 60-110 times that of a copper bar of the same size. With the groove structure on one side, Fan et al [7] concluded that the gravity effect on the performance of the FMHP was obvious in the axial direction.…”

Section: Introductionmentioning

confidence: 99%

The length and bending angle effects on the cooling performance of flat plate heat pipes

Chen

Chou

2015

International Journal of Heat and Mass Transfer

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“…Using the same experimental set up and procedure as in Cao et al (1997), Gao et al (1999) found that the optimized heat pipe had a maximum capillary limit of 50 and 70 Watts, in the horizontal and vertical orientations, respectively. Comparing the optimized heat pipe to the two earlier heat pipes showed about a 66% increase in performance.…”

Section: Literature Reviewmentioning

confidence: 96%

“…The work of Cao et al (1997) was extended in Gao et al (1999), where the data from the two heat pipes was augmented by experimental data for a third heat pipe. In Gao et al (1999), the researchers applied numerical optimization techniques to design the third heat pipe.…”

Section: Literature Reviewmentioning

confidence: 99%

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Embedded Heat Pipes in Cofired Ceramic Substrates for Enhanced Thermal Management of Electronics

Zampino¹

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All rights reserved.iv DEDICATION I dedicate this thesis to my late uncle, Giuseppe (Joseph) Agoglia, anItalian immigrant who came to America at the age of two in 1915. He tinkered with all things technical, an inventor out of necessity, and eventually an engineer by trade, but most of all, a dreamer of the future and the technical wonders it would hold and the achievements man would make with his new technologies. In all ways, he was a true engineer, with logical thought, mechanical aptitude, mathematical calculation, and wisdom gained through mentoring and experience. He did not have the opportunity to obtain an engineering degree, denied him by the culture, economics and politics of his time. Nonetheless, I still consider him more of an engineer than most graduates with an engineering degree.I remember him for teaching me to understand how and why things worked, but more importantly I remember his excitement when we talked about the latest scientific achievements. It was that excitement that led me to my profession in engineering. I knew that my uncle was proud when I received my undergraduate engineering degree. Now, I regret that he was not still alive to see me accomplish my doctoral degree. I reflect on this not out of desire for admiration, but rather because I understand now he would also be getting his doctoral degree, not in reality, but through me, someone he profoundly touched.

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Structural Optimization of Axially Grooved Flat Miniature Heat Pipes

Cited by 6 publications

References 0 publications

Experimental study of a bellows-type reciprocating-mechanism driven heat loop

Experimental study of a bellows-type reciprocating-mechanism driven heat loop

The length and bending angle effects on the cooling performance of flat plate heat pipes

Embedded Heat Pipes in Cofired Ceramic Substrates for Enhanced Thermal Management of Electronics

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