An engine is a machine designed to convert one or more forms of energy into mechanical energy. Mechanical heat engines convert heat into work via various thermodynamic processes.

The internal combustion engine is perhaps the most common example of a chemical heat engine, in which heat from the combustion of a fuel causes rapid pressurization of the gaseous combustion products in the combustion chamber, causing them to expand and drive a piston, which turns a crankshaft. Unlike internal combustion engines, a reaction engine (such as a jet engine) produces thrust by expelling reaction mass, in accordance with Newton's third law of motion.

An engine block on the other hand is the structure which contains the cylinders, and other parts, of an internal combustion engine. In an early automotive engine, the engine block consisted of just the cylinder block, to which a separate crankcase was attached. Modern engine blocks typically have the crankcase integrated with the cylinder block as a single component. Engine blocks often also include elements such as coolant passages and oil galleries.

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#energy #wind #turbines #energy #ngscience
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Electricity is very important to people. We use it to power our homes, cities and trains and cars.

One of the main ways we produce electricity is with the use of a generator. A generator is a device that converts mechanical kinetic energy into electrical energy.

A wind turbine is a very large windmill that uses the kinetic energy in wind to spin its blades. The blades spin a generator that transforms the energy into electrical energy.

Often, particularly in very windy places, many wind turbines are grouped together to form a wind farm. Wind farms can produce enough electricity to power whole cities.

A big advantage of wind energy is that it is a clean and renewable energy source. It does not require the burning of fuels and does not produce harmful emissions in to the air.

There are some disadvantages of using wind energy. The large spinning blades on a wind turbine can kill or harm flying animal like birds and bat. They can produce loud sounds that can disturb natural environments and be annoying to people. And if damaged, wind turbines can be expensive to repair.

Check out our related videos on the advantages and disadvantages of other electricity production methods.

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If what you need is an all around sweeper delivering 100% dust control, maximum productivity and low operating costs, the industrial and street sweeper and washer Dulevo 5000 Combi is sure to fit your needs.

In terms of productivity the industrial and street sweeper and washer ASC Dulevo 5000 Combi works at up to three times the rate of any traditional sweeper. This combo unit allows you to perform two services with only one machine.

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Application
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Building a Gigantic Supertanker | China's Mega Projects | FD Engineering

Installing the World’s Biggest Wind Turbine: https://youtu.be/za7kbChoqiM
Supersized Construction - China's Mega Projects: https://youtu.be/64Rtn_w-ob0

The historic Jiangnan Shipyard moved away from the banks of the Huangpu River and its original site became the World Expo 2010 site. Today, China has become an important member of the world's shipbuilding powerhouse, and more and more huge ships of 10,000 tons will be sailing from here to all over the world.
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“Engineering: the branch of science and technology concerned with the design, building and use of engines, machines and structures.” So says the Webster definition. Our newest Free Documentary family member Free Documentary - Engineering is all about engineering - and bringing our community the best documentaries on engineering.