Effect of the Content of Air Bubble in Oil on Forces of Vane in High Pressure Vane Pump

2011 ◽  
Vol 65 ◽  
pp. 17-20
Author(s):  
Shao Nian Li ◽  
Lie Jiang Wei ◽  
Zheng Rong Wang ◽  
Hong Ji
Keyword(s):  
Computer Simulation ◽  
High Pressure ◽  
Elasticity Modulus ◽  
Vane Pump ◽  
Air Bubble ◽  
Variation Curve

The content of air bubble in oil will effect on the value of volume elasticity modulus and the pressure of oil in working cavity of vane pump, and effect on the force of vane. The model between the air bubble content and the oil pressure in sealed working cavity is built when vane moving from big arc area to outlet area. And the equations of vane force in outlet area of vane pump are listed, and the variation curves are obtained by computer simulation when the content of air is given different value. The curve indicated the content of air bubble only effect on the value of vane force in pressure rising area of vane pump. The value of force reduced and the gradient of variation curve increased with the value of the air bubble content increasing.

Effect of the Content of Air Bubble in Oil on Pressure of Oil in Working Cavity of High Pressure Vane Pump

2011 ◽  
Vol 233-235 ◽  
pp. 2391-2394
Author(s):  
Shao Nian Li ◽  
Li Jiang Wei ◽  
Hong Ji ◽  
Zheng Rong Wang
Keyword(s):  
Computer Simulation ◽  
High Pressure ◽  
Elasticity Modulus ◽  
Heat Insulation ◽  
Vane Pump ◽  
Air Bubble

The content of air bubble in oil will effect on the value of volume elasticity modulus, and effect on the pressure of oil in working cavity. The article use the formula between the content of air bubble and the value of volume elasticity modulus in heat insulation process, and model is built which shows the relation between the content of air bubble and pressure of oil in sealed working cavity when vane moving from big arc area to outlet area. At last the curve of oil’s pressure in sealed working cavity was obtained by computer simulation when the content of air bubble in oil is given different values.

scholarly journals Electromagnetic phenomena analysis in brushless DC motor with speed control using PWM method

Open Physics ◽  
2017 ◽  
Vol 15 (1) ◽  
pp. 907-912
Author(s):  
Marek Pawel Ciurys
Keyword(s):  
High Pressure ◽  
Single Phase ◽  
Speed Control ◽  
Dc Motor ◽  
Circuit Model ◽  
Brushless Dc Motor ◽  
Bldc Motor ◽  
Vane Pump ◽  
Brushless Dc

AbstractField-circuit model of a brushless DC motor with speed control using PWM method was developed. Waveforms of electrical and mechanical quantities of the designed motor with a high pressure vane pump built in a rotor of the motor were computed. Analysis of electromagnetic phenomena in the system: single phase AC network – converter - BLDC motor was carried out.

Effect of Composition and Wall Thickness on Mechanical Properties of High Pressure Die Castings

2014 ◽  
Vol 790-791 ◽  
pp. 241-246
Author(s):  
Jenő Dúl ◽  
Zsolt Leskó
Keyword(s):  
Mechanical Properties ◽  
Computer Simulation ◽  
High Pressure ◽  
Wall Thickness ◽  
Vacuum System ◽  
Die Geometry ◽  
Experimental Tool ◽  
Preparation Phase ◽  
Die Castings ◽  
Vacuum Systems

In this paper we present two types of currently used vacuum systems on the HPDC and the preparation phase of an experimental tool. To investigate the properties of HPD castings we have designed a die geometry that complies with requirements of vacuum and non-vacuum systems. We used computer simulation to shape up the runner-and overflow-system. In the course of our work we examined specimens with differing thickness and alloys with different compositions to check the changes of mechanical properties and the effect of vacuum system.

Comparison between two different solution-pumping methods in absorption refrigeration machines

2010 ◽  
Vol 21 (3) ◽  
pp. 16-22
Author(s):  
George Vicatos ◽  
E. Krafft
Keyword(s):  
Energy Source ◽  
Computer Simulation ◽  
High Pressure ◽  
Cooling Capacity ◽  
Simulation Program ◽  
Absorption Refrigeration ◽  
Computer Simulation Program ◽  
Vapour Mixture ◽  
Program Show

This paper presents a pumping method in absorp-tion refrigeration where a vapour-driven pump is to replace the electricity-driven pump. The vapour pump is driven by a fraction of the generator’s hot, high-pressure, vapour mixture. The refrigerator is thus exclusively heat-powered and rendered inde-pendent of the availability of electricity as the main energy source. The design and operation of the vapour pump is presented. The results obtained by a computer simulation program show a decrease in performance (COP), which is confirmed by the data obtained from a 1 kW cooling capacity refrigerator. Peak performances occur at higher generator tem-peratures when compared to a cycle using an elec-tricity-driven pump

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