A numerical study of the heat transfer and fluid flow of micro-channeled water block for computer CPU cooling

Choi, Jin Tae; Kwon, Oh Kyung; An, Dong

doi:10.1007/s12206-011-0616-4

Cited by 7 publications

(4 citation statements)

References 9 publications

(8 reference statements)

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“…There are lots of turbulence models to simulate the turbulent flow and Standart k-ε model is one of them which is widely used for the heat transfer and fluid flow analysis (Choi et al, 2011). Due to this reason, Standart k-ε turbulence model was used in this study.…”

Section: Materyal Ve Metodmentioning

confidence: 99%

Numerical investigation of the effect of flow circulation pattern and velocity on the performance of water-cooled heat sink

ÖZBEKTAŞ¹,

Sungur²,

Topaloğlu³

2021

Gümüşhane Üniversitesi Fen Bilimleri Enstitüsü Dergisi

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The most critical problems of electronic components are the high power consumption and lesser life. This paper aims to numerically model the working process of the water-cooled heat sink to obtain the most effective design. In this context, four types of configurations with different passes (Type-A, Type-B, Type-C, Type-D) were designed at different water velocities, which were 0.25 m/s, 0.5 m/s, and 1 m/s with constant air velocity (6 m/s) to simulate fluid flow and the heat transfer. Results were evaluated as temperature and pressure contours, velocity streamlines, and the graphics of pressure difference, outlet temperature, temperature difference, heat transfer rate to air, and power consumption in relation to Reynolds number. Results showed that pressure difference, outlet temperature, power consumption, and heat transfer rate to air increased by increasing Reynolds number in all analyses. In all configurations, the water outlet temperatures were very close to each other, in the range of 63-65 °C for Re=2500, 70-72 °C for Re=5000, and 74-76 °C for Re=10000. Among all configurations, Type-A has the minimum outlet temperature with the value of 63.40 °C for Re=2500, 70.77 °C for Re=5000, and 74.85 °C for Re=10000. Also, Type-A showed better performance than other models in terms of heat transfer rate to air with the value of 1346 W for Re=2500, 1500 W for Re=5000, and 1675 W for Re=10000. The maximum pressure difference was obtained in Type-A geometry with the value of nearly 3500 Pa at a Reynolds number value of 10000. When the results were evaluated in full scope, it was concluded that Type-B was the most suitable model for use in terms of heat transfer, pump power, and inlet-outlet positions.

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Section: Materyal Ve Metodmentioning

confidence: 99%

Numerical investigation of the effect of flow circulation pattern and velocity on the performance of water-cooled heat sink

ÖZBEKTAŞ¹,

Sungur²,

Topaloğlu³

2021

Gümüşhane Üniversitesi Fen Bilimleri Enstitüsü Dergisi

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“…A suitable heat exchanger for this purpose was micro-channeled water blocks for computer CPU cooling. They are small and can take heat loads of around 150 W [21]. The model selected for this study is Bykski Water Cooling CPU-XPR-A CPU Block from a Chinese manufacturer.…”

Section: Solar Cell and Heat Exchangermentioning

confidence: 99%

“…On the other phase of the block, micro channels are cut into aluminum and the water entering the heat exchanger is forced to pass through these channels before exiting the heat exchanger. Tae et al in their study elaborated about the flow characters and heat transfer in a similar micro-channeled heat exchanger [21]. Figure 7 represents the heat exchanger.…”

Section: Solar Cell and Heat Exchangermentioning

confidence: 99%

Design and Fabrication of Absorptive/Reflective Crossed CPC PV/T System

Aykapadathu

Nazarinia

Sellami

2018

Designs

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A crossed compound parabolic concentrator (CCPC) is a non-imaging concentrator which is a modified form of a circular 3D compound parabolic concentrator (CPC) obtained by orthogonal intersection of two 2D CPCs that have an optical efficiency in line with that of 3D CPC. The present work is about the design and fabrication of a new generation of solar concentrator: the hybrid photovoltaic (PV)/thermal absorptive/reflective CCPC module. The module has a 4× CCPC structure truncated to have a concentration of 3.6× with a half acceptance angle of 30°. Furthermore, an experimental rig was also fabricated to test the performance of the module and its feasibility in real applications such as building-integrated photovoltaic (BIPV). 3D printing and Computer Numerical Control (CNC) milling technologies were utilized to manufacture the absorber and reflective parts of the module.

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“…Trapezoidal grooved microchannel heatsinks (MCHSs) have the optimum thermal design compared to rectangular and triangular grooved MCHSs. Choi et al [11] conducted numerical analysis on microchannel water blocks with pass variations. The heat transfer rate accompanied by higher values of pressure drop were observed in two-pass samples.…”

Section: Introductionmentioning

confidence: 99%

Cooling Performance of a Novel Circulatory Flow Concentric Multi-Channel Heat Sink with Nanofluids

et al. 2020

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Heat rejection from electronic devices such as processors necessitates a high heat removal rate. The present study focuses on liquid-cooled novel heat sink geometry made from four channels (width 4 mm and depth 3.5 mm) configured in a concentric shape with alternate flow passages (slot of 3 mm gap). In this study, the cooling performance of the heat sink was tested under simulated controlled conditions.The lower bottom surface of the heat sink was heated at a constant heat flux condition based on dissipated power of 50 W and 70 W. The computations were carried out for different volume fractions of nanoparticles, namely 0.5% to 5%, and water as base fluid at a flow rate of 30 to 180 mL/min. The results showed a higher rate of heat rejection from the nanofluid cooled heat sink compared with water. The enhancement in performance was analyzed with the help of a temperature difference of nanofluid outlet temperature and water outlet temperature under similar operating conditions. The enhancement was ~2% for 0.5% volume fraction nanofluids and ~17% for a 5% volume fraction.

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A numerical study of the heat transfer and fluid flow of micro-channeled water block for computer CPU cooling

Cited by 7 publications

References 9 publications

Numerical investigation of the effect of flow circulation pattern and velocity on the performance of water-cooled heat sink

Numerical investigation of the effect of flow circulation pattern and velocity on the performance of water-cooled heat sink

Design and Fabrication of Absorptive/Reflective Crossed CPC PV/T System

Cooling Performance of a Novel Circulatory Flow Concentric Multi-Channel Heat Sink with Nanofluids

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