Analysis of flow and heat transfer characteristics of an asymmetrical flat plate heat pipe

Vafai, Kambiz; Wang, W.

doi:10.1016/0017-9310(92)90054-v

Cited by 75 publications

(40 citation statements)

References 10 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…A series of studies by Vafai and coworkers [100][101][102] variety of canonical heater/condenser configurations was investigated, and the importance of considering axial variation in the evaporation and condensation rates was noted for high thermal conductivity wall materials. By necessity, each of the individual analytical vapor chamber modeling approaches above represents a tradeoff between simplifying thermal-fluid operating assumptions, limiting investigation to a set or range of external heating/cooling configurations, or reducing temporal/spatial dimensionality.…”

Section: Analytical Modeling Approachesmentioning

confidence: 99%

Recent Advances in Vapor Chamber Transport Characterization for High-Heat-Flux Applications

Weibel

Garimella

2013

Advances in Heat Transfer

View full text Add to dashboard Cite

Owing to their high reliability, simplicity of manufacture, passive operation, and effective heat transport, flat heat pipes and vapor chambers are used extensively in the thermal management of electronic devices. The need for concurrent size, weight, and performance improvements in high-performance electronics systems, without resort to active liquid-cooling strategies, demands passive heat spreading technologies that can dissipate extremely high heat fluxes from small hot spots. In response to these daunting application-driven trends, a number of recent investigations have focused on the design, characterization, and fabrication of ultra-thin vapor chambers for proximate heat spreading away from these hot spots. The predominant transport mechanisms and operational limits have been found to be different under these conditions relative to conventional low-power heat pipes. Noteworthy advances in the fundamental understanding of evaporation and boiling from porous microstructures fed by capillary action, and improvements in vapor chamber characterization, modeling, design, and fabrication techniques are reviewed. Characterization of evaporation and boiling from idealized and realistic wick structures, observation of vapor formation regimes as a function of operating conditions, assessment of fluid dryout limitations, design of novel multi-scale and nanostructured wicks for enhanced transport, and incorporation of these high heat flux transport phenomena into device-level models are discussed. These recent developments have successfully extended the maximum operating heat flux limits of vapor chambers.2

show abstract

Section: Analytical Modeling Approachesmentioning

confidence: 99%

Recent Advances in Vapor Chamber Transport Characterization for High-Heat-Flux Applications

Weibel

Garimella

2013

Advances in Heat Transfer

View full text Add to dashboard Cite

show abstract

“…The heat pipe was used as a heat transfer device with the heat transfer being achieved by a change of phase (latent heat of evaporation) of a working fluid. The schematic diagram and coordinate systems of the heat pipe components including the wall, a wick structure, and a vapor core 11 are shown in Figure 1.…”

Section: Modeling Approachmentioning

confidence: 99%

Three-dimensional transient mathematical model to predict the heat transfer rate of a heat pipe

Boothaisong

Rittidech

Chompookham

et al. 2015

Advances in Mechanical Engineering

View full text Add to dashboard Cite

A three-dimensional model was developed to simulate the heat transfer rate on a heat pipe in a transient condition. This article presents the details of a calculation domain consisting of a wall, a wick, and a vapor core. The governing equation based on the shape of the pipe was numerically simulated using the finite element method. The developed threedimensional model attempted to predict the transient temperature, the velocity, and the heat transfer rate profiles at any domain. The values obtained from the model calculation were then compared with the actual results from the experiments. The experiment showed that the time required to attain a steady state (where transient temperature is constant) was reasonably consistent with the model. The working fluid r134a (tetrafluoroethane) was the quickest to reach the steady state and transferred the greatest amount of heat.

show abstract

“…Asymmetrical heating of the flat heat pipe (from one side only) was analyzed using an integral method by Vafai and Wang [17], to obtain the pressure, temperature and velocity distributions. A transient two-dimensional analysis of the vapor core and wick regions of a flat heat pipe was performed by Unnikrishnan and Sobhan [19].…”

Section: B1 Flat Heat Pipesmentioning

confidence: 99%

Recent Advances in the Modeling and Applications of Nonconventional Heat Pipes

Garimella¹,

Sobhan²

2001

Advances in Heat Transfer

View full text Add to dashboard Cite

Analysis of flow and heat transfer characteristics of an asymmetrical flat plate heat pipe

Cited by 75 publications

References 10 publications

Recent Advances in Vapor Chamber Transport Characterization for High-Heat-Flux Applications

Recent Advances in Vapor Chamber Transport Characterization for High-Heat-Flux Applications

Three-dimensional transient mathematical model to predict the heat transfer rate of a heat pipe

Recent Advances in the Modeling and Applications of Nonconventional Heat Pipes

Contact Info

Product

Resources

About