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  2. Central vacuum cleaner - Wikipedia

    en.wikipedia.org/wiki/Central_vacuum_cleaner

    Cyclonic and filtered central vacuum systems are the two main types of central vacuums, differentiated by the method used to separate dirt and dust from the incoming airstream. [ 4 ] True cyclonic cleaners do not use filtration bags, instead separating the dirt and dust into a detachable cylindrical collection vessel or bin.

  3. Denison Hydraulics - Wikipedia

    en.wikipedia.org/wiki/Denison_Hydraulics

    Denison Hydraulics is a publicly traded U.S.-based company (Stock Symbol:DENHY) that manufactures industrial hydraulic fluid power systems (hydraulic pumps, motors, valves and engineered systems [1]) and components and is headquartered in Marysville, Ohio. Denison is owned by Parker Hannifin.

  4. Vacuum cleaner - Wikipedia

    en.wikipedia.org/wiki/Vacuum_cleaner

    The power unit of a typical central vacuum cleaner for residential use. Central vacuum cleaners, also known as built-in or ducted, are a type of canister/cylinder model which has the motor and dirt filtration unit located in a central location in a building, and connected by pipes to fixed vacuum inlets installed throughout the building.

  5. Vacuum sewer - Wikipedia

    en.wikipedia.org/wiki/Vacuum_sewer

    The system has only one central vacuum station serving 40 km of sewer line. The vacuum station is considered to be the biggest vacuum station in the world. [1] [non-primary source needed] The eco-city of Masdar, U.A.E., uses a vacuum sewer system as well to separate grey from black water.

  6. Columbus metropolitan area, Ohio - Wikipedia

    en.wikipedia.org/wiki/Columbus_metropolitan_area...

    Central Ohio has a well-established tech sector as well. The Online Computer Library Center (owner of the Dewey Decimal System) is located across from Cardinal on the other side I-270. Microcenter, a retailer of computers and other electronic equipment, was started in Upper Arlington and is now based in Hilliard.

  7. Building automation - Wikipedia

    en.wikipedia.org/wiki/Building_automation

    Building automation (BAS), also known as building management system (BMS) or building energy management system (BEMS), is the automatic centralized control of a building's HVAC (heating, ventilation and air conditioning), electrical, lighting, shading, access control, security systems, and other interrelated systems. Some objectives of building ...