Classification of Air Conditioning Systems.

Classification of Air Conditioning Systems.

1. Air conditioning systems can be classified into THREE categories corresponding to their EQUIPMENT as follows:

2. Individual Systems

   • Use a self-contained factory-made air conditioner to serve one or two rooms
     • 4 types of room air conditioners to choose from:
       • Portable Air Conditoners
         • A freestanding floor systems that cool a space by pulling in fresh air, removing heat and dehumidifying it, and returning it into your space while exhausting hot air.
       • Window Air Conditioners
         • Design to be installed inside a vertical sash window or in some cases, through a measured and prepared wall hole
       • Ductless Mini-Split Air Conditioners
         • Provide quiet, unobtrusive cooling for multiple ''zones'' within a home, office or commercial space.
       • Packaged Terminal Air Conditioners (PTACs)
         • Usually installed in hotels, assisted offices that are capable of cooling and heating spaces of nearly any size and allow to control multiple units from one location.

3. Unitary Packaged Systems

   • Serves more rooms or even more than one floor, have an air system consisting of fans, coils, filters, ductwork and outlets
     • Air Cooled Package Unit (ACPU)
       • Air cooled condensers are more commonly used than one with water cooled condensers since air is freely available. The ducts coming from the cooling unit are connected to the various rooms that are to be cooled.
     • Water Cooled Package Unit (WCPU)
       • The condenser is cooled by the water. The water has to be supplied continuously in these systems

4. Central (Hydronic) Systems

   • Basically consists of three major parts:
     • Air Systems
       • Air Handling Unit (AHU)
       • Air Distribution System (Air Duct)
     • Water Systems
       • Chilled Water System
       • Condenser Water System
       • Hot Water System
     • Central Plant (Chiller)
       • Air Cooled Chiller
       • Water Cooled Chiller

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