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In addition to critical care ventilation, Puritan Bennett provided medical devices for patients outside of the acute care environment. Its products included portable ventilation, oxygen therapy systems, sleep diagnostic and sleep therapy equipment, spirometry and other respiratory care products.
Liebert Corporation, headquartered in Westerville, Ohio, produced electric power systems, precision cooling equipment, server racks and integrated cabinets, and related infrastructure management and services. In 1987, it was acquired by Emerson Electric. In 2000, it was folded into Emerson Network Power, which became Vertiv in 2016.
CaptiveAire Systems is a privately held manufacturer of commercial kitchen ventilation systems in the U.S. and a manufacturer of HVAC equipment. [1] The company, founded by Robert L. Luddy in 1976, is headquartered in Raleigh, North Carolina .
Vertiv is an American multinational provider of critical infrastructure and services for data centers, communication networks, and commercial and industrial environments. ...
Ventilation on the downdraught system, by impulsion, or the 'plenum' principle, applied to schoolrooms (1899) Natural ventilation is the ventilation of a building with outside air without using fans or other mechanical systems. It can be via operable windows, louvers, or trickle vents when spaces are small and the architecture permits.
To reduce lab ventilation energy costs, variable air volume (VAV) systems are employed, which reduce the volume of the air exhausted as the fume hood sash is closed. This product is often enhanced by an automatic sash closing device, which will close the fume hood sash when the user leaves the fume hood face.
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The English architect Sir Christopher Wren applied an early ventilation system in the Houses of Parliament that used bellows to circulate air. Wren's design was the catalyst for much later improvement and innovation. The first rotary fan used in Europe was for mine ventilation during the 16th century, as illustrated by Georg Agricola (1494 ...
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