Thermal Analysis of a Micro Heat Pipe

Khrustalev, Dmitry; Faghri, Amir

doi:10.1115/1.2910855

Cited by 189 publications

(67 citation statements)

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“…For predicting thermal characteristics of heat pipes with various cross-sectional and groove shapes, many researchers have suggested simplified one-dimensional theoretical models based on the differential form of the Laplace-Young equation [3][4][5][6][7][8]. In order to facilitate the analysis, these models employ many simplifying assumptions.…”

Section: Introductionmentioning

confidence: 99%

A mathematical model for analyzing the thermal characteristics of a flat micro heat pipe with a grooved wick

Hyung

Kim

Garimella

2008

International Journal of Heat and Mass Transfer

165

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A mathematical model is developed for predicting the thermal performance of a flat micro heat pipe with a rectangular grooved wick structure. The effects of the liquid-vapor interfacial shear stress, the contact angle, and the amount of liquid charge are accounted for in the present model. In particular, the axial variations of the wall temperature and the evaporation and condensation rates are considered by solving the one-dimensional conduction equation for the wall and the augmented Young-Laplace equation, respectively. The results obtained from the proposed model are in close agreement with several existing experimental data in terms of the wall temperatures and the maximum heat transport rate. From the validated model, it is found that the assumptions employed in previous studies may lead to significant errors for predicting the thermal performance of the heat pipe. Finally, the maximum heat transport rate of a micro heat pipe with a grooved wick structure is optimized with respect to the width and the height of the groove by using the proposed model. The maximum heat transport rate for the optimum conditions is enhanced by approximately 20% compared to existing experimental results.

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Section: Introductionmentioning

confidence: 99%

A mathematical model for analyzing the thermal characteristics of a flat micro heat pipe with a grooved wick

Hyung

Kim

Garimella

2008

International Journal of Heat and Mass Transfer

165

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“…Wu and Peterson [31] experimentally validated the model proposed by Khrustalev and Faghri [29]. They demonstrated that for nearly maximum thermal loads, a very high fraction of the liquid pressure drop occurred in the evaporator and the beginning of the adiabatic section.…”

Section: Thermal Capacitymentioning

confidence: 96%

Geometric optimization for a thermal microfluidic chip

Rahmat

Hubert

2010

J Mech Sci Technol

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During the past two decades, thermal microfluidic chips have significantly been investigated. Due to their high capacity of heat transport, an increasing number of studies on different aspects of thermal microfluidic chips have been conducted.However, a comprehensive investigation on the geometry of microfluidic chips using state of the art finite element software is absent from the literature. In this thesis, geometric parameters of thermal microfluidic chips have been optimized, using finite element software. Consequently, micro and macro phenomena were

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“…A detailed mathematical model for the analysis of a micro heat pipe, which described the liquid distribution and thermal characteristics in relation to the liquid charge and heat load, was developed by Khrustalev and Faghri [101]. The variation in curvature of the free liquid surface as well as the interfacial shear stress due to liquid-vapor frictional interaction were represented in the model.…”

Section: Micro Heat Pipesmentioning

confidence: 99%