combined cycle performance can be improved by improving the performance of gas turbine based topping cycle. amongst various options the effective cooling of gas turbine blade for realizing the higher turbine inlet temperatures is one of the attractive options. the present paper deals with the thermodynam-ic analysis of advanced technology gas/steam combined cycle based power plant having closed...

in this paper, in order to increase the efficiency, to reduce the cost and to prevent the failures of wind turbines, which lead to an extensive break down, a robust fault diagnosis system is proposed for v47/660kw wind turbine operated in manjil wind farm, gilan province, iran. according to the acquired data from iran wind turbine industry, common faults of the wind turbine such as sensor fault...

Hydrostatic power transmission between the rotor of a wind turbine and generator, which can be placed on ground, is way to reduce cost installing turbine, reducing mass at height. The article shows ability hydrostatic cope with disturbance due change in air flow that drives rotor. When increasing flow, would normally lead an increase drive speed electric by adjusting geometric volume hydraulic ...

The results from a steady, viscous flow simulation of the main flowpath of a modern jet engine transonic highpressure turbine, transition duct, and first vane of the low-pressure turbine, coupled with the secondary-air system under the high-pressure turbine, is presented. The secondary-air system configuration includes the lower cavity near the centerline, the mid-cavity with the tangential onb...

Numerical simulations were performed to investigate pressure fluctuations in the S-shaped region of a pump-turbine model. Analyses focused on pressure fluctuations in the draft tube and in the gap between the guide vanes and runner. Calculations were made under six different operating conditions with a constant guide vane opening, and the best efficiency point, runaway point, and low-discharge ...

In tidal two-way contra-rotating units, significant differences in performance often occur when arranging the front and rear impellers, which requires an optimized design of impellers. To solve this problem, by reducing blade inlet outlet angles, impact different angles on pump–turbines internal flow was explored, effects angle impellers counter-rotating pump were obtained. Afterward, streamlin...

Storage technologies are an emerging element in the further expansion of renewable energy generation. A decentralized micro-pumped storage power plant can reduce load on grid and contribute to energies. This paper establishes favorable boundary conditions for economic operation a micro-pump (MPS) system. The evaluation is performed by means custom-built simulation model based pump turbine maps ...