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hydraulic characteristicsfluid transientsvalvesIn this study, several types of valves were used to study the impact of the valves types and closure characteristics on fluid transients. The valve closure curves, which are the variation of the effective valve opening as a function of percentage opening...
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used 25 mm wide obstruction geometries at the entry of a 25 mm wide test channel. There exist several other investigations, which deal with the control of flow using different types of valves (Streeter, 1961, Davis and Sorenson, 1969, Hutchison, 1976, Eom, 1988). Gerrard, 1966, Gerrard, ...
Flow Characteristics of Hydraulic Fluids of Different Viscosities I. Flow in Valves: A Transition from Laminar to Turbulent FlowThe use of high-water or 95/5 hydraulic fluids is expanding from limited utilization in very special equipment to broader applications in general industrial hydraulic ...
In addition, vented emissions of varying volumes occur by design, via routine venting of pneumatic valves, storage tanks, dehydrators, and wells after hydraulic fracturing (Alvarez and Paranhos, 2012). A large number of studies have evaluated methane emissions in particular from natural gas drilling...
- 《Proceedings of the Jfps International Symposium on Fluid Power》 被引量: 4发表: 1996年 Experiment Study on Performances of Servo Pump Used in Hydraulic Press Machine As we known, the energy efficiency of pump-control system is higher than valve-control system. So, using pump-control ...
(648.5 mmol m−2y−1and 671.0 mmol m−2y−1, respectively). At the DM site, strong methane fluxes may cause an imbalance in hydraulic pressure, especially in shallow layers where sediments are not yet consolidated, resulting in active invasion of bottom seawater36. Moreover...
There are two main types of APPs: with port valves (PV) or with port plate (PP). The structure of PV based water pumps is not affected by contamination that found in water and has a reasonable abrasion resistance which make it suitable for abrasive working fluids such as silt-laden water...
parts (3-5) for compensation of thermal length changes of the piezo-translator and the housing parts consist of materials with different coefficients of thermal expansion. An independent claim is also included for the following: (a) a switching device for valves, especially hydraulic pilot valves....