The air now passes through the cooling coil. The mixed air passes through a filter to remove dirt, dust, and other impurities. which is obtained from air-conditioned space. The outside air flows through the damper and mixes up with recirculated air. The schematic diagram is shown in figure. In this system air is cooled and generally dehumidified. This system is used in summer air conditioning applications. The outside air is sucked and made to mix with re-circulated air, in order to make up for the loss of conditioned (or used) air through exhaust fans or ventilation from the conditioned space. The remaining part of the used air (Known as re-circulated air) is again conditioned as shown in Fig. From the conditioned space, a part of the used air is exhausted to the atmosphere by the exhaust fans or ventilators. Now, the conditioned air is supplied to the conditioned space by a fan. After that, the air is made to pass through a reheat coil to bring the air to the designed dry bulb temperature. The air now passes through a preheat coil in order to prevent the possible freezing of water and to control the evaporation of water in the humidifier. The outside air flows through a damper and mixes up with the re-circulated air (which is obtained from the conditioned space). The schematic arrangement of the system is shown in Fig. In winter air conditioning, the air is heated which is generally followed by humidification. Year around air conditioning system diagram Most of the air is directly passed to the heating coil bypassing the cooling coil. In the winter season, bypass damper is in an almost open position. All air is passed through the heating coil. The cooling coil may be evaporator of the refrigeration system or coil through which chilled water is passed. In the summer season, bypass damper is almost closed and most of the air passes through the cooling coil. The air conditioner designed such that when the outdoor air temperature is either above or below a certain selected value, it assumes the season as summer or winter respectively. The amount of outdoor fresh air and recirculated air is controlled by the motor. The arrangement of the year-round air conditioning system is as shown in fig. According to Working substance used in the system: The central air conditioning either direct or indirect type.Д¤. The main components of the central system are compressor with motor drive, condenser with cooling coil, throttling devices. In the central air conditioning system all the components are group together in one central room and conditioned air then distributed from the central room to the required places through the extension duct system. This type of system is used for conditioning of air in theatres, cinemas, restaurants, exhibition halls, big factory space, etc. In this system different components are manufactured in a factory and assembled at the site. This unit is installed in or near to space to be conditioned.Д®xample: Window air conditioner and Split air conditioner In this system different component of air conditioning system is manufactured and assembled as a unit in a factory. According to the arrangement of equipment Tray: It collects condensed water Classification of Air conditioning system / Types Of Air Conditioning System :ДЎ. Grille: It adjusts the direction of conditioned air to the room.Д¦. Control system: It regulates automatically the amount of cooling or heating.ДҐ. Heating element: Heating of air (It may be an electric heater, steam, hot water)Д¤. The basic components of the air conditioning system are,ДЈ. Components of the air conditioning system

Ac system diagrams