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Central, "all-air" air-conditioning systems (or package systems) with a combined outdoor condenser/evaporator unit are often installed in North American residences, offices, and public buildings, but are difficult to retrofit (install in a building that was not designed to receive it) because of the bulky air ducts required. [32] (Minisplit ...
Central vacuum installed with an air inlet Antique central vacuum inlet located in a dining room at Château Dufresne (Canadian Register of Historic Places, c. 1918) Typical central vacuum cleaner power unit for residential use (North America)
On October 27, 2010, FedEx opened its Central and Eastern European hub at Cologne Bonn Airport. The hub features a fully automated sorting system that can process up to 18,000 packages per hour. The roof of the hub features FedEx's largest solar power installation, producing 800,000 kilowatt hours per year. [29]
An Atmospheric Vacuum Breaker (AVB) is a backflow prevention device used in plumbing to prevent backflow of non-potable liquids into the drinking water system. Diagram of Atmospheric Vacuum Breaker in both working states.
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Operating a vacuum heat treating furnace, c. 1959–1962 A vacuum furnace is a type of furnace in which the product in the furnace is surrounded by a vacuum during processing. The absence of air or other gases prevents oxidation , heat loss from the product through convection , and removes a source of contamination.
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Vacuum truck. A vacuum truck, vacuum tanker, vactor truck, vactor, vac-con truck, vac-con is a tank truck that has a pump and a tank. The pump is designed to pneumatically suck liquids, sludges, slurries, or the like from a location (often underground) into the tank of the truck. The objective is to enable transport of the liquid material via ...