Elevator - Wikipedia

An elevator (North American English) or lift (Commonwealth English) is a type of cable-assisted, roller-track assisted, or hydraulic cylinder-assisted machine that vertically transports people or freight between floors, levels, or decks of a building, vessel, or other structure. They are typically powered by electric motors that drive traction cables and counterweight systems such as a hoist

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Glossary of electrical and electronics engineering - Wikipedia

An element of a vacuum tube that emits electrons without a heating circuit. Colossus A British code breaking system used during World War II. combined cycle A thermal power plant that improves efficiency with two different kinds of energy extraction from the combustion products gas stream, such as a gas turbine followed by a steam boiler.

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Create a Jobseeker account | EURES - European Job Days

The account you are about to create is free of charge and will give you access to numerous features of the European Job Days platform. Once registered, you will be able to create your profile, upload your CV, directly apply for interesting job offers and schedule online or face-to-face interviews with employers using our interview scheduling system on the day of the event.

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Agricultural Anaerobic Digesters: Design and Operation

Dec 01, 2016 · This digester-heating system uses an outside heat exchanger and a slurry pump to move the slurry through the exchanger. Source of heat is hot water. In the Penn State digester (Figure 48). the slurry was heated by passing it along the heat-exchange surface in the middle wall (Figure 49), which contained heating pipes cast into concrete panels.

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(PDF) Cambridge English for Engineering.pdf | Việt Nguyễn

Academia.edu is a platform for academics to share research papers.

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Milk and dairy products: production and processing costs

Recycling or re-using heat exchange water, which represents some 70 percent of the intake volume, has great potential for reducing water intake costs for the plant. Water saving is usually measured by the rate of use, which is the ratio between the total amount of water used and the water intake.

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Rankine Cycle - Steam Turbine Cycle | Characteristics

Water and steam are a common fluid used for heat exchange in the primary circuit (from surface of fuel rods to the coolant flow) and in the secondary circuit. It used due to its availability and high heat capacity, both for cooling and heating.It is especially effective to transport heat through vaporization and condensation of water because of its very large latent heat of vaporization.

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Heat pipe - Wikipedia

A heat pipe is a heat-transfer device that combines the principles of both thermal conductivity and phase transition to effectively transfer heat between two solid interfaces.. At the hot interface of a heat pipe, a liquid in contact with a thermally conductive solid surface turns into a vapor by absorbing heat from that surface. The vapor then travels along the heat pipe to the cold interface

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How to Replace Your Own Furnace - Mr. Money Mustache

Nov 23, 2015 · This is because a heat pump pulls heat out of the air so it can be more than efficient. A 96% efficient gas furnace loses 4% of the heat created by burning the gas to exhause outside your home. A heat pump sucks over 2 watts of heat out of the surrounding air for every 1 watt of energy you put into it and thus can have an efficiency of

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Air conditioning - Wikipedia

Air conditioning (also A/C, air conditioner) is the process of removing heat and controlling the humidity (as well as removing dust in some cases) of the air within a building or vehicle, in order to achieve a more comfortable interior environment. This may be achieved using powered devices ('air conditioners'), by passive cooling or by ventilative cooling.

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