Influence of geometrical parameters of hexagonal, circular, and rhombus microchannel heat sinks on the thermohydraulic characteristics

Alfaryjat, Altayyeb; Mohammed, Hussein A.; Adam, Nor Maria; Ariffin, Mohd Khairol Anuar Mohd; Najafabadi, Mohammad Izadi

doi:10.1016/j.icheatmasstransfer.2014.01.015

Cited by 115 publications

(31 citation statements)

References 32 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Prevailing equations and 3D steady state heat transfer applied for three channels (hexagonal, circular, and rhombus) have been solved by Finite volume method (FVM). results indicated that the hexagonal MCHS with minimum D h has maximum pressure drop & heat transfer coefficient compared to another configurations [37]. Deng et al 2015 showed that re-entry micro-channels (REM) show a significant increase in 2-phase h in case of high subcooling & medium to high heat flux compared to conventional rectangular micro-channels (RM) at the same D h with two refrigerants (demineralized water and ethanol) with inlet sub-cooling 10 ° C, 40 ° C & G = 200 to 300 kg / m 2 s [38].…”

Section: Impact Of Heat Fluxes Mass Fluxes and Vapour Quality On Fmentioning

confidence: 91%

Impact of Channel Geometries and Flow Patterns On Micro-Channel Heat Sink Performance

Chandra¹,

Prakash²

2019

IJITEE

View full text Add to dashboard Cite

Demand for greater capability of electronic devices in very small volume for compactness has affected huge augmentations in heat indulgence at all stages of device, electronic wrapping, test section and system. Latest cooling systems are hence needed to eliminate the released heat while maintaining compactness of the device. The micro-channel heat sink (MCHS) is ideal for this situation as it consists of channels of micron size which offers an extended surface area to volume ratio of approximately 15.294 m2 / m3 compared to 650 m2 / m3 for a typical heat compact exchanger. A comprehensive review has been done for consequence of heat flux (qo ), mass flux (G), vapour quality (x) and channel geometries at flow patterns and heat dissipation of MCHS. The study show that to increase the rate of heat transfer by using different channel geometries like converging-diverging, segmented etc. compared to conventional rectangular micro-channels has given better cooling effect The Flow patterns like bubbly, slug flow are associated with nucleate boiling dominated in low vapour quality and annular flow also given the significant effect on heat transfer in higher vapour quality region

show abstract

Section: Impact Of Heat Fluxes Mass Fluxes and Vapour Quality On Fmentioning

confidence: 91%

Impact of Channel Geometries and Flow Patterns On Micro-Channel Heat Sink Performance

Chandra¹,

Prakash²

2019

IJITEE

View full text Add to dashboard Cite

show abstract

“…A.A. Alfaryjat et al (2014) [19] they are numerically investigated the water flow and heat transfer characteristics which are affected by the geometrical parameter of micro channel heat sink when we use different channel shapes. Here we used three different channel shapes (hexagonal, circular and rhombus).…”

Section: T Mushtak Ismael Hasan (2014) [18]mentioning

confidence: 99%

Improvement of Thermal Hydraulic Characteristics of MPFHS with Nanofluids –A Review

Lilhare¹

2017

IJRASET

View full text Add to dashboard Cite

Absract: Today's several new techniques have to be compelled to be explored for the developments of recent electronic devices for dissipating high heat flux for ensure stable and optimum operation. Like micro-channel heat sinks because of their tiny mass and volume still as larger space for cooling of high heat flux chips with using pin fins with different shapes and different arrangements. So as to more optimize the small heat sink performance, the various kinds of nano-fluids are used as a cooling agent. The most aim of this work is to review numerous researches tired past to boost heat transfer rate and hydraulic behaviour of small pin fins heat sink by either changing its geometry, climate condition and material, spacing between the fins and its configuration with differing kinds of nano-fluids, additionally with completely different size and concentration of nano particle . Keywords-heat transfer, fins, nano fluid, computational fluid dynamic. I.INTRODUCTION Fins are used as associate extended surface to extend the heat transfer rate in a very big selection of engineering applications, and provide a sensible approach while not use of an excessive quantity of primary area for achieving a large heat transfer area. It's normally used for heat management in electrical appliances, cooling of combustion engine, like fins in an exceedingly automobile radiator. Therefore its vital issue to analysis the behavior of the fin in relation to temperature distribution for optimize the effectiveness. currently the present approach for enhance the heat transfer rate Nano-fluid is employed as a medium, containing nanoparticles (1-100 nm) of metal or metal compound that are uniformly and stably distributed in a base fluid for increase the thermal conductivity of base fluid. So that heat transfer from fin arrays has been studied extensively, both analytically and through an experiment.

show abstract

“…Eq. (14). The value of N is determined after numerical simulations, i.e., after calculating T out and substituting this value (along with T w and T in ) on the left side of Eq.…”

Section: Thermal Resistancementioning

confidence: 99%

“…Recent studies have focused on optimizing the flow architecture in order to enhance the heat transfer rate [1][2][3][4][5][6]. Several studies have demonstrated the effect of the wetted perimeter shape on the flow performance [7][8][9][10][11][12][13][14]. Additionally, the longitudinal configuration of the flow channel such as zigzag, curvy, step [15], single-layer, double-layer, tapered [16], wavy [17] and converting channels [18] for the same cross-sectional shape was investigated and compared with the conventional straight channel with uniform cross-sectional shape.…”

Section: Introductionmentioning

confidence: 99%

Arrays of flow channels with heat transfer embedded in conducting walls

Bejan

Almerbati

Lorente

et al. 2016

International Journal of Heat and Mass Transfer

View full text Add to dashboard Cite

a b s t r a c tHere we illustrate the free search for the optimal geometry of flow channel cross-sections that meet two objectives simultaneously: reduced resistances to heat transfer and fluid flow. The element cross section and the wall material are fixed, while the shape of the fluid flow opening, or the wetted perimeter is free to vary. Two element cross sections are considered, square and equilateral triangular. We find that the two objectives are best met when the solid wall thickness is uniform, i.e., when the wetted perimeters are square and triangular, respectively. We also consider arrays of square elements and triangular elements, on the basis of equal mass flow rate per unit of array cross sectional area. The conclusion is that the array of triangular elements meets the two objectives better than the array of square elements.

show abstract

Influence of geometrical parameters of hexagonal, circular, and rhombus microchannel heat sinks on the thermohydraulic characteristics

Cited by 115 publications

References 32 publications

Impact of Channel Geometries and Flow Patterns On Micro-Channel Heat Sink Performance

Impact of Channel Geometries and Flow Patterns On Micro-Channel Heat Sink Performance

Improvement of Thermal Hydraulic Characteristics of MPFHS with Nanofluids –A Review

Arrays of flow channels with heat transfer embedded in conducting walls

Contact Info

Product

Resources

About