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Extending Classical Friction Loss Modeling to Predict the ...

Extending Classical Friction Loss Modeling to Predict the ...

Apr 15, 2019 The affinity law modified for viscosity effects is further extended to include the power input and efficiency. The power input and efficiency data generated using computational fluid dynamics (CFD) are utilized to represent dimensionless power coefficient and efficiency for the pump under consideration. The goal of modifying the affinity laws for power input is …

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Centrifugal Pump Head Prediction using Affinity Laws ...

Centrifugal Pump Head Prediction using Affinity Laws ...

Aug 28, 2018 Google Scholar. Gerald Morrison; Gerald Morrison ... Gerald , Delgado, Adolfo , and Hector Casillas. Centrifugal Pump Head Prediction using Affinity Laws Modified for Viscosity. Paper presented at the SPE Artificial Lift Conference and Exhibition - Americas, ... Experimental Study of Centrifugal Pump Handling Viscous Fluid and Two-Phase Flow.

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Energy-saving control model of inverter for centrifugal ...

Energy-saving control model of inverter for centrifugal ...

Considering the general centrifugal pump, ... (14) according to the characteristic of the pump and the affinity law. p i is the conversion coefficient. P (Q, k) = p 0 k 3 + p 1 k 2 Q + p 2 kQ 2 + p 3 Q 3 ... Google Scholar. 3. ANSI/HI 9.6.3:1997 . Centrifugal and vertical pumps for allowable operating region.

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Real time simulation of Variable Speed Parallel Pumping ...

Real time simulation of Variable Speed Parallel Pumping ...

Dec 01, 2017 The relation between the rotational speed and pump parameters is provided by affinity laws of centrifugal pumps. When the pumps are connected in parallel, the change in various pump output parameters (total flow rate and pressure of the pumping system) with respect to the change in rotational speed is discussed.

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Rotational speed variation assessment of centrifugal pump ...

Rotational speed variation assessment of centrifugal pump ...

Dec 15, 2020 Relaxation of the affinity law (RAE) asserted to be considered for pumps with specific speeds between 120 and 162, but centrifugal machines may have some differences with it. Sanchez et al. conducted an experimental research and compared their result with affinity law. They suggested new equations for axial and radial machines separately.

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Applied Sciences Free Full-Text Flow Field Analysis ...

Applied Sciences Free Full-Text Flow Field Analysis ...

Feb 01, 2021 A multistage centrifugal pump is designed for pumping low-viscosity, highly volatile and flammable chemicals, including hydrocarbons, for high head requirements. The five-stage centrifugal pump consists of a double-suction impeller at the first stage followed by a twin volute. The impellers for stages two through five are single-suction impellers followed by …

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Effect of Leakage Flow Path Wear on Axial Thrust in ...

Effect of Leakage Flow Path Wear on Axial Thrust in ...

Feb 03, 2020 Google Scholar. Marie Kasprzyk ... Development of Modified Affinity Law for Centrifugal Pump to Predict the Effect of Viscosity ... 140 (9), pp. 1 – 9. Google Scholar. Crossref. Search ADS 28. Patil, A., and Morrison, G., 2018, “ Affinity Law Modified to Predict the Pump Head Performance for Different Viscosities Using the Morrison Number ...

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Effect of Reynolds Number on Performance of a Small ...

Effect of Reynolds Number on Performance of a Small ...

Feb 04, 2009 Google Scholar. Phillip P. Lemire, Phillip P. Lemire University of Virginia, Charlottesville, VA ... A study of a small centrifugal blood pump has been made to address the effectiveness of traditional pump affinity laws and the influence that viscous effects, as characterized by the Reynolds number, have on the pump performance. ...

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Energy-saving potential for centrifugal pump storage ...

Energy-saving potential for centrifugal pump storage ...

Feb 10, 2021 In this paper, we present the energy-saving potential of using optimized control for centrifugal pump–driven water storages. For this purpose, a Simulink pump-pipe-storage model is used. The equations and transfer function for steady-state and transient system behavior are presented and verified. Two different control strategies—optimum constant flow rate and level …

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Evaluation of PAT Performances by Modified Affinity Law ...

Evaluation of PAT Performances by Modified Affinity Law ...

Jan 01, 2014 S. Derakhshan, A. Nourbakhsh, Experimental study of characteristic curves of centrifugal pumps working as turbines in different specific speeds. Exp Therm Fluid Sci, 32 (2008) 800-807. Google Scholar

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Affinity Laws and Specific Speed in Centrifugal Pumps

Affinity Laws and Specific Speed in Centrifugal Pumps

Jan 23, 2006 THE AFFINITY LAWS SPECIFIC SPEED IN CENTRIFUGAL PUMPS. By R.P. Horwitz Project Engineer. AFFINITY LAWS. The performance of a given pump at various speeds and the performance of geometrically similar pumps is governed by a set of formulas known as theaffinity laws. The affinity laws, or formulas, state that for a given pump, the capacity will …

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Micro Axial Turbine Hill Charts: Affinity Laws ...

Micro Axial Turbine Hill Charts: Affinity Laws ...

Jul 04, 2019 Water supply systems are one of the main hydraulic systems with significant potential for the installation of micro-hydropower devices. Although there are already some mini-hydropower applications in water supply systems, it is still a huge potential that continues to be under-exploited. The arrangement based on an axial turbine, such as an inline tubular …

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Development of Smart Water Supply System for ... - Springer

Development of Smart Water Supply System for ... - Springer

Jul 30, 2020 Google Scholar Hand Book of Fundamentals Principles of Pump Technology. (Wilo, 2005) Principles of Pumps and Pumping Installation, Institution of Railway Electrical Engineers. (IREE, 2010) S. Khanchi, Int. J. Eng. Trends Technol. 4, 2967–2971 (2013) Google Scholar TOD tariff details printed on mahadiscom energy bill

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Development of Modified Affinity Law for Centrifugal Pump ...

Development of Modified Affinity Law for Centrifugal Pump ...

May 07, 2018 The modified affinity laws accurately models the performance dependence upon viscosity. As with the standard affinity laws, a pump's functional relationship varies with each pump design. Yet the modified affinity laws produce a single common curve for all operating conditions and viscosities for a specific pump. Issue Section:

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Experiments and mechanistic modeling of viscosity effect ...

Experiments and mechanistic modeling of viscosity effect ...

May 12, 2021 Morrison, G, Yin, WJ, Agarwal, R. Development of modified affinity law for centrifugal pump to predict the effect of viscosity. J Energy Resour Technol 2018 ; 140(9): 092005. Google Scholar | Crossref

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Modified Affinity Laws in Hydraulic Machines towards the ...

Modified Affinity Laws in Hydraulic Machines towards the ...

Nov 02, 2017 where n s is the specific speed of the machine in (m, kW); n is the rotational speed of the machine in rpm; P is the power in shaft, which is measured in (kW); and H is the recovered head in (m w.c.).. Based on the specific speed, the impellers can be: radial, semi-axial, or axial according to Fig. 1a. The radial or centrifugal impeller are those in which the fluid enters in …

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Energies Free Full-Text Experimental ... - MDPI

Energies Free Full-Text Experimental ... - MDPI

Nov 17, 2019 Centrifugal pumps are widely used and are known to be sensitive to inlet air-water two-phase flow conditions. The pump performance degradation mainly depends on the changes in the two-phase flow behavior inside the pump. In the present paper, experimental overall pump performance tests were performed for two different rotational speeds and …

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Experimental evaluation of affinity law of pumps by using ...

Experimental evaluation of affinity law of pumps by using ...

Oct 29, 2020 Google Scholar; 11. Thomas F. Kaiser, Richard H. Osman and Ralph O. Dickau, Analysis guide for variable frequency drive operated centrifugal pumps, Proceedings of the twenty-fourth international pump users symposium, pp. 81– 106 (2008). Google Scholar; 12.

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Pumps - Affinity Laws - Engineering ToolBox

Pumps - Affinity Laws - Engineering ToolBox

Pump Affinity Laws for a Specific Centrifugal Pump Volume Capacity The volume capacity of a centrifugal pump can be expressed like q1 / q2 = (n1 / n2) (d1 / d2) (1) where q = volume flow capacity (m3/s, gpm, cfm, ..) n = wheel velocity - revolution per minute - (rpm) d = wheel diameter (m, ft) Head or Pressure

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Magnetic levitation pump versus constrained vortex pump: a ...

Magnetic levitation pump versus constrained vortex pump: a ...

Sep 08, 2021 Bottrell S, Bennett M, Augustin S, Thuys C, Schultz B, Horton A, et al. A comparison study of haemolysis production in three contemporary centrifugal pumps. Perfusion. 2014;29:411–6. CAS Article Google Scholar Neal JR, Quintana E, …

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Water Free Full-Text Definition of the Operational ...

Water Free Full-Text Definition of the Operational ...

Sharma, K. Small Hydroelectric Project-Use of Centrifugal Pumps as Turbines; Kirloskar: Bangalore, India, 1985. [ Google Scholar ] Derakhshan, S.; Nourbakhsh, A. Experimental study of characteristic curves of centrifugal pumps working as turbines in different specific speeds.

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