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Established in 2001, Puyang Zhong Yuan Restar Petroleum Equipment Co.,Ltd, “RSD” for short, is Henan’s high-tech enterprise with intellectual property advantages and independent legal person qualification. With registered capital of RMB 50 million, the Company has two subsidiaries-Henan Restar Separation Equipment Technology Co., Ltd We are mainly specialized in R&D, production and service of various intelligent separation and control systems in oil&gas drilling,engineering environmental protection and mining industries.We always take the lead in Chinese market shares of drilling fluid shale shaker for many years. Our products have been exported more than 20 countries and always extensively praised by customers. We are Class I network supplier of Sinopec,CNPC and CNOOC and registered supplier of ONGC, OIL India,KOC. High quality and international standard products make us gain many Large-scale drilling fluids recycling systems for Saudi Aramco and Gazprom projects.

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A novel micro-channel heat sink with trapezoid drainage ...

This study experimentally investigates the condensation of dielectric fluid HFE-7100 in a micro-channel heat sink with the ,hydraulic diameter, of 1.21 mm. Tests are conducted at a fixed pressure of 110 kPa, with vapor mass quality (x in) ranging from 0.1 to 0.9, mass fluxes (G) from 150 to 250 kg·m −2 ·s −1, inclined angle (θ) from −90° to +90°.

Regular polygon - Wikipedia

In Euclidean geometry, a ,regular polygon, is a polygon that is equiangular (all angles are equal in measure) and equilateral (all sides have the same length). Regular polygons may be either convex or star.In the limit, a sequence of regular polygons with an increasing number of sides approximates a circle, if the perimeter or area is fixed, or a regular apeirogon (effectively a straight line ...

Influence of Channel Parameters on Thermal-Deformation of ...

The effect of cross-section shape and geometrical parameters of the channel on heat transfer and thermal deformation of the microchannel water-cooled mirror is studied by analyzing the temperature field obtained by using finite volume method to solve the three-dimensional steady laminar flow and heat transfer equations,and the deformation obtained by coupling the temperature field to ANSYS ...

Influence of Channel Parameters on Thermal-Deformation of ...

The effect of cross-section shape and geometrical parameters of the channel on heat transfer and thermal deformation of the microchannel water-cooled mirror is studied by analyzing the temperature field obtained by using finite volume method to solve the three-dimensional steady laminar flow and heat transfer equations,and the deformation obtained by coupling the temperature field to ANSYS ...

China Trapezoid Sheet Forming Machine Trapezoid Sheet ...

China ,Trapezoid, Sheet Forming Machine manufacturers - Select 2020 high quality ,Trapezoid, Sheet Forming Machine products in best price from certified Chinese Machine For Plastic manufacturers, Machine For Metal suppliers, wholesalers and factory on Made-in-China.com

Diameter - Wikipedia

In geometry, a ,diameter, of a circle is any straight line segment that passes through the centre of the circle and whose endpoints lie on the circle. It can also be defined as the longest chord of the circle. Both definitions are also valid for the ,diameter, of a sphere.. In more modern usage, the length of a ,diameter, is also called the ,diameter,.

AIAA 2006-3119 Approximate Solution for Pressure Drop in ...

h =4A/P, known as the ,hydraulic diameter,,asthe characteristic length scale for non-circular channels. However, as can be seen in Eq. (8), a more appropriate length scale is the square root of area, √ A. Withthesquarerootofarea √ A as the characteristic length scale, a non-dimensional wall shear stress can be deﬁned as: τ∗≡ τ √ A µw = π √ ¡ 1+²2 ¢

Regular polygon - Wikipedia

In Euclidean geometry, a ,regular polygon, is a polygon that is equiangular (all angles are equal in measure) and equilateral (all sides have the same length). Regular polygons may be either convex or star.In the limit, a sequence of regular polygons with an increasing number of sides approximates a circle, if the perimeter or area is fixed, or a regular apeirogon (effectively a straight line ...

China Trapezoid Sheet Forming Machine Trapezoid Sheet ...

China ,Trapezoid, Sheet Forming Machine manufacturers - Select 2020 high quality ,Trapezoid, Sheet Forming Machine products in best price from certified Chinese Machine For Plastic manufacturers, Machine For Metal suppliers, wholesalers and factory on Made-in-China.com

CONTINUOUS RBC REMOVAL USING SPIRAL MICROCHANNEL …

trapezoid cross -section of 500 µm width (485. 00 µm ± 2.31 µm), 70 µm (inner wall, 72.84 µm± 1.16 µm) and 100 µm (outer wall, 102.65 µm ± 3.55 µm) depth. Near the outlet region, the 485 µm wide channel was split into two outlet

A novel micro-channel heat sink with trapezoid drainage ...

This study experimentally investigates the condensation of dielectric fluid HFE-7100 in a micro-channel heat sink with the ,hydraulic diameter, of 1.21 mm. Tests are conducted at a fixed pressure of 110 kPa, with vapor mass quality (x in) ranging from 0.1 to 0.9, mass fluxes (G) from 150 to 250 kg·m −2 ·s −1, inclined angle (θ) from −90° to +90°.

CONTINUOUS RBC REMOVAL USING SPIRAL MICROCHANNEL …

trapezoid cross -section of 500 µm width (485. 00 µm ± 2.31 µm), 70 µm (inner wall, 72.84 µm± 1.16 µm) and 100 µm (outer wall, 102.65 µm ± 3.55 µm) depth. Near the outlet region, the 485 µm wide channel was split into two outlet

Hydraulics Flashcards | Quizlet

Q=1.49 ÷ n times A times R^2/3*√ (S) Click again to see term 👆. Tap again to see term 👆. Chezy's Formula. Click card to see definition 👆. Tap card to see definition 👆. Q=CA√ [ R * S] Click again to see term 👆. …

Hydraulics Flashcards | Quizlet

Q=1.49 ÷ n times A times R^2/3*√ (S) Click again to see term 👆. Tap again to see term 👆. Chezy's Formula. Click card to see definition 👆. Tap card to see definition 👆. Q=CA√ [ R * S] Click again to see term 👆. …

Solved: What Is The Equivalent Hydraulic Diameter (in M) O ...

What is the equivalent ,hydraulic diameter, (in m) of the ,trapezoid, below? 4 cm 5 cm 9 cm . Get more help from Chegg. Get 1:1 help now from expert Chemical Engineering tutors

Solved: What Is The Equivalent Hydraulic Diameter (in M) O ...

What is the equivalent ,hydraulic diameter, (in m) of the ,trapezoid, below? 4 cm 5 cm 9 cm . Get more help from Chegg. Get 1:1 help now from expert Chemical Engineering tutors

Fluid Dynamics in Microchannels

-Triangle, Rectangle, ,Trapezoid,, Circle, Square and Non-uniform. 1. Size effect (,Hydraulic diameter,) 2. Aspect ratio 3. Entrance effect 2. Materials of microchannels - Silicon, Nickel, Polycarb onate, Polyamide, Fused silica, Stainless steel, Copper, Aluminum, Brass, Glass, Oxidized silicon, SiO 2, Polyvinylchloride, Poly-dimethylsiloxane(PDMS),

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Road West, North Branch, Jingkai Road, Puyang City