GC: n CT: Water hammer is a pressure surge or wave caused when a fluid (usually a liquid but sometimes also a gas) in motion is forced to stop or change direction suddenly (momentum change). As soon as steam leaves the boiler, it starts losing heat. As a result, steam
GC: n CT: A watershed is the area of land where all of the water that is under it or drains off of it goes into the same place. John Wesley Powell, scientist geographer, put it best when he said that a watershed is: “that area of land, a bounded
GC: n CT: Photovoltaic solar panels produce power through generation of watts of energy. Panels come in different “strengths” or wattage levels. Solar panel sizes vary from very low wattage levels up to 280 watts worth of power. Solar systems are sold as complete installs by watt. This includes the
GC: n CT: A wave power generator that can harvest energy no matter which way the sea is running has won the UK round of James Dyson’s engineering award. The Renewable Wave Power generator seeks to overcome the limitations of some current wave power technologies. These work best when struck
GC: n CT: As the climate change conference continues in The Hague, it is perhaps fitting that the world’s first commercial wave power station is going into action in Scotland. The power station, on the island of Islay, is the product of years of research into how to effectively harvest
GC: n CT: S: (last access: 14 April 2016) N: 1. – wave (n): “moving billow of water,” 1520s, alteration (by influence of wave (v.)) of Middle English waw, which is from Old English wagian “to move to and fro” (cognates: Old Saxon, Old High German wag, Old Frisian weg,
GC: n CT: A web browser, or simply “browser,” is an application used to access and view websites. Common web browsers include Microsoft Internet Explorer, Google Chrome, Mozilla Firefox, and Apple Safari. The primary function of a web browser is to render HTML, the code used to design or “mark
GC: n CT: The units for magnetic flux Φ, which is the integral of magnetic field over an area, are the weber (Wb) in the SI and the maxwell (Mx) in the cgs system. The conversion factor is 108, since flux is the integral of field over an area, area
GC: n CT: Blogging, social media, forums—these are just some of the many ways to promote your brand or sell your product online. But if you’re more of a public speaker and want to share your ideas upfront with your audience, you can set up and host a webinar. A
GC: n CT: Wind statistics and the Weibull distribution. It is a matter of common observation that the wind is not steady and in order to calculate the mean power delivered by a wind turbine from its power curve, it is necessary to know the probability density distribution of the
GC: n CT: A structure, used to dam up a stream or river, over which the water flows, is called a weir. The conditions of flow, in the case of a weir, are practically the same as those of a rectangular notch. That is why, a notch is, sometimes, called
GC: n CT: Wavegen, a unit of Voith Hydro, produces a shoreline wave energy conversion unit called Limpet. The technology used is called an oscillating water column. Ocean waves move air in and out of chambers in a breakwater. This compressed air drives Wavegen’s turbine, known as the Wells turbine,
GC: n CT: Wi-Fi has become the preferred means for connecting to the Internet, without wires: at home, in the office, in hotels and restaurants, at airports and railway stations. Increasingly, it is providing access to the Internet for remote communities in developing countries and in rural areas of developed
GC: n CT: Despite the fact that wikis provide an easy-to-use, free and powerful means to edit information, fewer than 1% of visitors contributed content to the wiki. These results may be a function of limited interest in the topic area, the review methodology itself, lack of familiarity with the
GC: n CT: Wind energy takes advantage of kinetic energy in moving air (wind), to turn large blades connected to a central hub. The blades (called rotors) are often made of fibre-glass, designed to be aerodynamic and are mounted on a tower. Larger rotors have a larger ‘swept area’ and
GC: n CT: Wind energy development zones, if done right, could be helpful to both birds and wind energy development. Siting is the most important step in making wind energy bird-smart, and American Bird Conservancy (ABC) is developing a map of the areas where wind energy would be most risky
GC: n CT: Wind turbines operate on a simple principle. The energy in the wind turns two or three propeller-like blades around a rotor. The rotor is connected to the main shaft, which spins a generator to create electricity. So how do wind turbines make electricity? Simply stated, a wind
GC: n CT: Wind energy is one of the oldest source of energy used by mankind, comparable only to the use of any animal force and biomass. A wind turbine is a device that converts kinetic energy from the wind into mechanical energy. If the mechanical energy is used to
GC: n CT: Furthermore, table 6.1 presents a typical one-day period of operation of the combined wind-hydro power station in the area of Biannos. The wind speed distributions during a year and the monthly demand of Biannos –area have been provided by the Wind Energy Laboratory and PPC respectively. The
GC: n CT: A windmill is a machine which converts the energy of wind into rotational motion by means of adjustable vanes called sails. The main use is for a grinding mill powered by the wind, reducing a solid or coarse substance into pulp or minute grains, by crushing, grinding,
GC: n CT: Since the 1990s plans have been developed to build the largest windmill park of the Netherlands in the Noordoostpolder; partly on land and partly in the water of the Ijsselmeer. Especially the neighbouring community of Urk is not pleased about this and often attracts attention from the