Torque measurement is paramount in engine and transmission testing, turbine testing, pump testing and testing of gear trains and power measurement within propulsion systems. Monitoring torque can be critical to the performance of axles, drive trains, gear drives, and electric and hydraulic motors. Other in-plant applications include gas and steam turbines. Really, torque is an important factor ...

In order to improve the reliability of tripping solenoid valve and switching steam turbine in nuclear power plant reduce abnormal closing. According working principle valves plant, this paper designs a kind electromagnetic sealing test system, including base, measurement control system hydraulic system. The detection is an offline By simulating real load condition tightness tested valve. actual...

An iterative geostatistical inverse approach is developed to estimate conditional effective unsaturated hydraulic conductivity parameters, soil-water pressure head, and degree of saturation in heterogeneous vadose zones. This approach is similar to the classical cokriging technique, and it uses a linear estimator that depends on covariances and cross covariances of unsaturated hydraulic paramet...

Velocity factors are important parameters to determine the efficiency of turbine stages, and it is necessary systematically study effect decline in velocity on stages under off-design conditions. In this paper definition sensitivity proposed each parameter analysed. A simplified model was also established change a governing-stage pressure stage varying mass flow The results show that for calcul...

Abstract Hydraulic impedance, as an efficient frequency-domain analysis alternative, has been widely utilized in hydraulic transient for decades. Since the mathematical expressions of systems with complicated pipe networks are usually rather complex, it is difficult traditional continuous impedance method to obtain analytical solutions system’s frequency responses directly. Therefore, equivalen...

In this work, a second-order sliding mode control algorithm is proposed for variable speed laboratory size DC generator wind turbine experiment system in order to track a speed profile and operate the wind turbine at maximum power extraction. The turbine torque, which varies with the wind speed, is considered as an unknown disturbance and rejected by the sliding mode strategy. The sliding mode ...

Hydraulic turbines constitute an essential component within the hydroelectric power generation industry, contributing to renewable energy production with minimal environmental pollution. Maintaining stable turbine operation presents a considerable challenge, which necessitates effective fault diagnosis and warning systems. Timely efficient w arnings are particularly vital, as they enable person...

As with many technologies, carbon capture and storage (CCS) faces social acceptance challenges that can impact the pace of its development and deployment. Previous studies on the social acceptance of CCS have tended to rely on case studies of pilot projects or surveys of decision makers and the general public. Here, we take a different approach, using real world data about the social acceptance...

A dynamic model of a centrifugal compressor capable of system simulation in the virtual test bed (VTB) computational environment is presented. The model is based on first principles, i.e. the dynamic performance including the losses is determined from the compressor geometry and not from the experimentally determined characteristic performance curves. In this study, the compressor losses, such ...