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371.931  Articles
1 of 37.194 pages  |  10  records  |  more records»
Thermal energy is used in greenhouses for the temperature and humidity control.  In the North of Europe, energy expenditures have a significant share in the total greenhouse production cost.  A study was performed to quantify and analyze the use... see more

The objective of this work was to evaluate the adjustment of data series of hourly wind speed for Ponta Grossa, Paraná State, to the probability distributions of Weibull, Rayleigh, Beta, Gama and Normal and to analyze possible interferences of the day and... see more

In recent years, sites with low annual average wind speeds have begun to be considered for the development of new wind farms. The majority of design methods for a wind turbine operating at low wind speed is to increase the blade length or hub height compa... see more

Nyala is one of the most suitable areas in Sudan for building wind energy conversionsystem. This system could be linked with Nyala electrical grid without expensive cost because it isnear to the electrical local grid. The permanent changes of wind speed w... see more

Recently, a number of research groups have paid much attention to the study of Floating Offshore Wind Turbines (FOWTs). Similar to other offshore structures, the FOWTs are subjected to irregular waves and wind loads which cause a dynamic response in the s... see more

This article presents a robust speed tracking algorithm for a permanent magnet synchronous generator utilized for wind power generation systems, considering the machine parameter and load uncertainties. There are two major contributions: (a) a disturbance... see more

Flettner rotor is a cylindrical object which installed vertically on the ship's body. It rotates on its axis to utilize the airflow from the wind and help the ship to generate additional thrust force by using the principle of magnus effect. This additiona... see more

A new improved flux – profile relationship for winds in convective conditions isconstructed from convective transport theory and radix layer theory. Data from theMinnesota field experiment are used to recalibrate the new parameterization andsimilarity equ... see more

HAWT with three blades is often used, because it has the highest power coefficient among other turbines. The airfoil used is Clark-Y type because it has high glide ratio (coefficient lift/coefficient drag) in the application of subsonic flow. The main pur... see more

1 of 37.194 pages  |  10  records  |  more records»