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In electrical and safety engineering, hazardous locations (HazLoc, pronounced haz·lōk) are places where fire or explosion hazards may exist. Sources of such hazards include gases, vapors, dust, fibers, and flyings, which are combustible or flammable. Electrical equipment installed in such locations can provide an ignition source, due to ...
A fire alarm notification appliance is an active fire protection component of a fire alarm system. A notification appliance may use audible, visible, or other stimuli to alert the occupants of a fire or other emergency condition requiring action. Audible appliances have been in use longer than any other method of notification.
June 2000. Manufacturer. LG Electronics. The LG Internet Digital DIOS (also known as R-S73CT) is an internet refrigerator released by LG Electronics in June 2000. The technology is the result of a project that started in 1997 and staffed by a team of 55 researchers with a budget cost of 15 billion won (US$49.2 million).
An absorption refrigerator is a refrigerator that uses a heat source to provide the energy needed to drive the cooling process. Solar energy, burning a fossil fuel, waste heat from factories, and district heating systems are examples of convenient heat sources that can be used. An absorption refrigerator uses two coolants: the first coolant ...
Globally. Food in a refrigerator with its door open. A refrigerator, colloquially fridge, is a commercial and home appliance consisting of a thermally insulated compartment and a heat pump (mechanical, electronic or chemical) that transfers heat from its inside to its external environment so that its inside is cooled to a temperature below the ...
In the lower middle is the capacitor. Heating, ventilation, and air conditioning ( HVAC) [1] is the use of various technologies to control the temperature, humidity, and purity of the air in an enclosed space. Its goal is to provide thermal comfort and acceptable indoor air quality.
In domestic business and first class: Free alcohol is available on request on flights over 300 miles. Free snacks are also available on flights between 300 and 900 miles. On flights over 900 miles ...
A 3He/4He dilution refrigerator is a cryogenic device that provides continuous cooling to temperatures as low as 2 mK, with no moving parts in the low-temperature region. [1] [2] The cooling power is provided by the heat of mixing of the helium-3 and helium-4 isotopes.
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