What is usage of gas turbines ? How can i use gas turbine ? In an aircraft gas turbine the output of the turbine is used to turn the compressor (which may also have an associated fan or propeller). The hot air flow leaving the turbine is then accelerated into the atmosphere through an exhaust nozzle to provide thrust or propulsion power Figure…
Aerodynamics is the science and study of the physical laws of the behavior of objects in an air flow and the forces that are produced by air flows. Different types of wind turbine blade The front and rear sides of a wind turbine rotor blade have a shape roughly similar to that of a long rectangle, with the…
Engineering advancements pioneered the development of gas turbines in the early 1900s, and turbines began to be used for stationary electric power generation in the late 1930s. Turbines revolutionized airplane propulsion in the 1940s, and in the 1990s through today have been a popular choice for new power generation plants in the United States. Gas turbines are available in…
The efficiency of any turbine or engine can be defined as its ability to convert the input energy into useful output energy which is expressed in the form of the following equation. Efficiency (ɳ) = Output / Input An ideal turbine with 100% efficiency is the one which converts all its input energy into output work without dissipating…
We know about turbines something less or more but have you ever think about how big wind turbines can be? Norway has announced plans to build the world’s largest wind turbine. The turbine will measure 533 feet high with a rotor diameter of 475 feet. With that big size will also come big power – the turbine is expected to…
Another type of turbine developed at about the same time as the Darrieus was the Savonius turbine, developed in Finland by S. J. Savonius. This is anothervertical axis machine which needs no orientation into the wind. Alternative energy enthusiasts often build this turbine from used oil barrels by cutting the barrels in half lengthwise and welding the two halves back together offset from…
The Darrieus wind turbines was patented in the United States by G. J. M. Darrieus in 1931. It was reinvented by engineers with the National Research Council of Canada in the early 1970’s. Sandia Laboratories built a 5 m diameter Darrieus in 1974, and has been strongly involved with further research on the Darrieus turbine since that time.…
All steam turbines can be classified into two categories; extraction (condensing) steam turbine and non-condensing steam turbine also known as back pressure steam turbines. Both of these steam turbine types have their own operating schemes and benefits which are described here in detail. Extraction Steam Turbine Figure 1: Extraction (condensing) steam turbine The extraction turbine…
Horizontal-axis wind turbines (HAWT) have the main rotor shaft and electrical generator at the top of a tower, and may be pointed into or out of the wind. Small turbines are pointed by a simple wind vane, while large turbines generally use a wind sensor coupled with a servo motor. Most have a gearbox, which turns the…
We know that there is enough wind globally to satisfy much, or even most, of humanity’s energy requirements – if it could be harvested effectively and on a large enough scale. Vertical axis wind turbines (VAWTs), which may be as efficient as current horizontal axis systems, might be , simpler and significantly cheaper to build and maintain…
