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air conditioning

(Encyclopedia)CE5 Cross section of air conditioning unit. air conditioning, mechanical process for controlling the humidity, temperature, cleanliness, and circulation of air in buildings and rooms. Indoor air i...

conditioning

(Encyclopedia)conditioning: see learning.

air

(Encyclopedia)air: see atmosphere; liquid air; ventilation. ...

Carrier, Willis Haviland

(Encyclopedia)Carrier, Willis Haviland, 1876–1950, American engineer who played a key role in inventing air conditioning, b. Angola, N.Y., grad. Cornell (M.E. 1901). Working for the Buffalo Forge Co. (1901–14),...

heat pump

(Encyclopedia)heat pump: see air conditioning. ...

liquid air

(Encyclopedia)liquid air, ordinary air that has been liquefied by compression and cooling to extremely low temperatures (see liquefaction). Its commercial preparation involves purification by washing to remove solu...

lock, air

(Encyclopedia)lock, air: see air lock.

compressed air

(Encyclopedia)compressed air, air whose volume has been decreased by the application of pressure. Air is compressed by various devices, including the simple hand pump and the reciprocating, rotary, centrifugal, and...

air transportation

(Encyclopedia)air transportation: see aviation. ...

plein-air

(Encyclopedia)plein-air plān-ârˈ, Fr. plĕn-ĕrˈ [key] [Fr.,=open-air], term used for paintings or drawings made directly from nature and infused with a feeling of the open air. Painting outdoors is a relativel...