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fraisage microchannel fin

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Research PaperEffect of surface coating on defrosting water

2022年5月25日  Vertical-fin microchannel heat exchanger has better frosting and defrosting performance owing to its better water drainage along vertical fins. Effect of hydrophilic and superhydrophobic coatings on frosting and defrosting performance is experimentally

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Numerical prediction of frosting growth characteristics of microchannel ...

2023年11月15日  Established 3D frosting growth model of microchannel louvered fin based on OpenFOAM. • Unveiled local-frost growth and spatial distribution of microchannel

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Optimization of fin layout in liquid-cooled microchannels for

2023年1月1日  Fin layout in the chip-microchannel is optimized under the conditions of non-uniform power-partition chip based on constructal theory. The total volume of fins in a

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Experimental investigation on the flow transition in different pin-fin ...

2017年12月27日  The pin-fin microchannels used in this study were fabricated on a 500 μm thick silicon chip using the plasma dry etching technique. The microchannels were 25

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Fabrication of micro pin fins on inclined V-shaped microchannel

2022年1月11日  A laser-micromilling process was developed for fabricating micro pin fins on inclined V-shaped microchannel walls for enhanced microchannel heat sinks. A

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COMPARISON OF FROST AND DEFROST PERFORMANCE BETWEEN MICROCHANNEL

2022年10月25日  Abstract. This paper presents a comparison of frost and defrost cycling performance between a microchannel heat exchanger with louvered fin and a fin-and

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Heat Transfer and Fluid Flow Characteristics of Microchannel

2021年11月9日  The influences of the fin axial length ratio (α), width ratio (β), and height ratio (γ) on the overall flow heat transfer performance of the microchannel are

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Investigation on Flow Through Staggered Micro Pin Fin

2022年9月21日  Research Article Investigation on Flow Through Staggered Micro Pin Fin Arrays with Variable Longitudinal Spacings Using Micro-PIV Mingming Lv , Zhigang Liu ,

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Performance evaluation of simple radial fin design for

2021年2月23日  The microchannel heat sink with Copper as substrate material, consists of radial fins of thickness 80mm forming number of diverging channels ranging from 45 to

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Experimental Investigation on Flow Past an Isolated Micro Pin Fin ...

2021年12月27日  In the present study, an experimental investigation on flow past an isolated low aspect ratio (height-to-diameter ratio) pin fin embedded in a microchannel is

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Fraisage ou tournage : comparaison des méthodes d'usinage

2023年4月11日  Bien que le tournage et le fraisage soient des techniques d’usinage similaires, il existe des différences significatives entre ces deux techniques. Les principales différences sont : Mouvement de la pièce de travail : Dans le tournage, la pièce de travail tourne autour de son axe tandis que l’outil de coupe est immobile.

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Flow boiling heat transfer and pressure drop ... - ScienceDirect

2023年1月5日  Flow boiling of water in a copper foam fin microchannel (FFMC) heat sink is investigated and compared with that in a solid fin microchannel (SFMC) one. Experiments are conducted under inlet temperature of 80 ℃, mass fluxes of 76 ∼ 408 kg/m 2 s, and effective heat fluxes of 0 ∼ 296.5 W/cm 2. The flow pattern, heat transfer, pressure drop ...

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Numerical study on heat transfer characteristics of a pin–fin

2023年1月25日  A pin–fin staggered manifold microchannel (PFSMMC) heat sink is proposed to enhance the heat dissipation performance of the MMC heat sink in this paper. The heat transfer performance of the PFSMMC heat sink, the rectangular manifold microchannel (RMMC) and the pin–fin manifold microchannel (PFMMC) are compared

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COMPARISON OF FROST AND DEFROST PERFORMANCE BETWEEN MICROCHANNEL

2022年10月25日  This paper presents a comparison of frost and defrost cycling performance between a microchannel heat exchanger with louvered fin and a fin-and-tube heat exchanger with straight fins employed as outdoor coils of a 14 kW (48 000 Btu/h) heat pump system. In addition to temperature, pressure and flow rate measurements taken at

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Effect of Surface Coating on Defrosting Water Drainage

2022年2月1日  Effect of Surface Coating on Defrosting Water Drainage Characteristics of Vertical-fin Microchannel Frosting Evaporator @article{Li2022EffectOS, title={Effect of Surface Coating on Defrosting Water Drainage Characteristics of Vertical-fin Microchannel Frosting Evaporator}, author={Feng Li and Siyuan Wu and Zhiheng Ma and Rijing Zhao

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Microchannel cooling plates with non-uniform airfoil fin

The designed non-uniform airfoil fins arrangement microchannel can alleviate the contradiction between T max and temperature uniformity in most experimental conditions. Furthermore, simply increasing the fin density does not necessarily in enhancing heat transfer. The N-UAFA 2 is the best choice to ensure the battery healthy state.

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An investigation of convective heat transfer in microchannel

DOI: 10.1016/J.IJHEATMASSTRANSFER.2016.07.069 Corpus ID: 125613719; An investigation of convective heat transfer in microchannel with Piranha Pin Fin @article{Yu2016AnIO, title={An investigation of convective heat transfer in microchannel with Piranha Pin Fin}, author={Xiangfei Yu and Corey Woodcock and Joel L. Plawsky

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Water Free Full-Text Investigation of Flow and Heat

2022年10月5日  The manifold microchannel (MMC) heat sink is characterized by high heat transfer efficiency, high compactness, and low flow resistance. It can be an effective method for the high-flux removal of high-power electronic components. To further enhance the performance of the MMC, a double-layer pin–fin MMC structure was designed. The

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Investigation of a nanofluid-cooled microchannel heat sink using Fin ...

2009年9月1日  A microchannel heat sink consists of a number of channels N, that each channel has a height L ch, width W ch and length L hs. The thickness of the plate is W fin. Download : Download full-size image; Fig. 1. Schematic view of microchannel heat sink.

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Advanced Microchannel Heat Exchanger with S-shaped Fins

2012年3月16日  Fin shape effects on thermal-hydraulic characteristics were studied for a Microchannel Heat Exchanger (MCHE) with S-shaped fins using 3D-CFD and changing the fin parameters: fin angle, overlapping length, fin width, fin length, and edge roundness. The fin angle effect on the pressure drop is consistent with the equation obtained

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Study on the flow and heat transfer characteristics of pin-fin

2022年2月1日  Fig. 1 (a) shows the fundamental structure of pin-fin manifold microchannel studied in this paper. Heat flux flows from the bottom of the substrate into the heat sink. The low-temperature working fluid flows into the channel from the inlet of the divider, and is divided into two branches in the channel.

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Condensate drainage on slit or louvered fins in microchannel

2020年9月15日  1. Introduction. Microchannel heat exchangers (MCHE) have been applied recently in a variety of products such as heat pump, air-conditioner, refrigerator etc., to substitute for traditional fin and tube heat exchangers due to their lower weight, compactness and less refrigerant charge which could directly lower the impact of global

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Constructal optimization design of hybrid microchannel heat

Methods First, the 3D flow and heat transfer numerical model of a hybrid microchannel heat sink is established, and the volume ratio and relative position of its single-sided internal fins are fixed. Constructal optimization is then performed, for which the height-to-width ratio h/w and spacing distribution of fins ε are taken as the design variables, and the minimization

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Effect of surface coating on defrosting water drainage

2022年5月25日  Introduction. Conventional horizontal-fin microchannel heat exchangers (as shown in Fig. 1(a)) have been used in heat-pump water heaters, refrigerators, air conditioners and other refrigeration systems due to advantages of small size, light weight, less containing refrigerant and high heat transfer efficiency.However, condensed water

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Experimental investigation of the performance of microchannel

2015年10月5日  1. Introduction. Research and on the microchannel heat exchanger and its application have developed rapidly in recent years. Compared with the conventional fin and tube heat exchanger, the microchannel heat exchanger has the advantages of being more compact as well as having lower weight, higher efficiency, and smaller inner volume for

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Fraisage : paramètres de coupe - 4mepro

Ainsi, vous pouvez avoir la vitesse de coupe pour le plastique, l’acier, le cuivre, l’aluminium, le carbure, etc. ATTENTION : Les vitesses d’avance sont données pour un fraisage en avalant, selon les profondeurs de passe. Pour les fraises en séries extra courtes, augmentez l’avance de 20% ; pour des fraises en séries longues ...

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Experimental investigation on flow boiling of HFE-7100 in a ...

2023年2月1日  DOI: 10.1016/j.applthermaleng.2023.120180 Corpus ID: 252740887; Experimental investigation on flow boiling of HFE-7100 in a microchannel with pin fin array @article{Zhuang2023ExperimentalIO, title={Experimental investigation on flow boiling of HFE-7100 in a microchannel with pin fin array}, author={Xiaoru Zhuang and Yichen Xie

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Flow Boiling Stability Improvement with Periodic Stepped Fin ...

A periodic stepped fin microchannel heat sink (PSFMC) is developed to stabilize microchannel flow boiling operation and thereby improve the two-phase heat transfer performance. This heat sink design involves removal of sections of the straight microchannel fins to half the total fin height to create interconnected sections at regular intervals. Flow

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Hydrodynamic and thermal performance of in-line strip-fin

2023年8月1日  In this work, an in-line strip-fin manifold microchannel heat sink is proposed to improve the hydrodynamic and thermal performance of the conventional manifold microchannel. The hydrodynamic and thermal performance of varying strip-fin arrangements with approximately the same heat transfer area are numerically investigated. The results

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Local, transient heat transfer measurements for flow boiling

2019年5月1日  Flow boiling in a microchannel with a pin fin was experimentally studied. Micro resistance temperature detectors (RTD) array was integrated inside a microchannel to enable local transient temperature measurement. The temperature measurements were synchronized with high-speed images to analyze boiling event and the corresponding

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