نتایج جستجو برای: centrifugal pump design
تعداد نتایج: 1024080 فیلتر نتایج به سال:
In this paper, a simulation-based method is proposed for optimal placement of vibration sensors for the purpose of fault detection in a centrifugal pump. The centrifugal pump is modeled to investigate the effect of vane tip fault on fluid flow patterns numerically. Pressure pulsations are investigated at different locations at the inner surface of the pump before and after the presence of the f...
the non-uniformity factor is used for correction of the formulas obtained from the one-dimentional fluid flow method in a centrifugal impeller pump. the variations of radial velocity at the outlet of five centrifugal impellers with the specific speed of about ns =50 are calculated at design point by using two-dimentional potentional flow method for an invisid fluid. on the other hand~ the varia...
Major industrial sector are using, most pumps are of centrifugal type. Centrifugal pumps are widely used because of their design simplicity, high efficiency & low maintenance. Modern centrifugal pumps are not complex machines. Despite the simplicity of design and production, centrifugal pumps are still capable of posing complex puzzles during their operation. The performance of a pump must be m...
with the prolonged use of domestic centrifugal pump, due to erosion, corrosion and an unbalance the sever vibration of the pump are resulted. an erratic sound coming out of pump makes the user uncomfortable. here, tuned vibration absorber (tva) is used as a vibration controlling device. it is designed to reduce the rms velocity below 20% of the circumferential speed, at which the impeller is ba...
The recent success of continuous-flow circulatory support devices has led to the growing acceptance of these devices as a viable therapeutic option for end-stage heart failure patients who are not responsive to current pharmacologic and electrophysiologic therapies. This article defines and clarifies the major classification of these pumps as axial or centrifugal continuous-flow devices by disc...
The co-rotating mechanism is utilized for scroll vacuum pump application by one of the authors. It was found that the corotating scroll compressor is transformed to a centrifugal compressor by reducing the eccentricity between the two scrolls to zero. The authors propose a co-rotating scroll compressor which works not only as a positive displacement compressor, but also as a centrifugal one in ...
Case Services' software provides production optimization for a variety of different methods of artificial lift. This paper discusses the dominant factors in electrical centrifugal submersible pump design and monitoring. Emphasis is placed on three areas: • Well inflow performance behavior. • Fluid Pressure-Volume-Temperature and phase behavior. • Pump equipment performance specifications. An ex...
BACKGROUND Contemporary ventricular assist device therapy results in a high rate of successful heart transplantation but is associated with bleeding, infections, and other complications. Further reductions in pump size, centrifugal design, and intrapericardial positioning may reduce complications and improve outcomes. METHODS AND RESULTS We studied a small, intrapericardially positioned, cont...
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