Classifications of Air conditioning systems

Air conditioning is the process of removal of heat from a confined space, obviously cooling the air, and removal of humidity. This process is used to create a fine comfortable interior environment, typically for human beings or animals. Air conditioning is also used to dehumidify the rooms filled with heat-producing electronic devices, such as computer servers, amplifiers, and display and store artwork. Air conditioners are using a fan to distributing the conditioned air to an occupied space such as a building to improve thermal comfort and by improving indoor air quality. 

Air conditioning can refer that the form of technology that modifies the condition of air such as heating, cooling, de-humidification or humidification, cleaning, ventilation, or air movement. In other term, though, "air conditioning" refers to systems which cooled air. In construction based, a complete system of heating, ventilation, and air conditioning is referred to as heating, ventilation, and air conditioning (HVAC).

Air conditioning system mainly classified into two; that is ductable and non-ductable system. Ductable system which circulation of cold air to the different occupied spaces by the aid of duct. In non-ductable system which have no ducts and directly installed to room. The ductable system again sub divided into packaged air conditioning unit and central plant. The non-ductable system sub divides into split air conditioning and window air conditioning system.

The central plant divided into DX system and chilled water system. The split air conditioning system sub divide into floor mounted, ceiling mounted and wall mounted system. The ceiling mounted system divided into three, exposed, hide-way type and cassette type. DX system and chilled water system commonly divided into vapour compression unit and vapour absorption unit. The vapour compression type divided into reciprocating, centrifugal and screw type. Vapour absorption type system divided into hot water fired, direct fired and steam fired. The hierarchy of the classification of the system is shown in the below diagram.