Weak current College】 【air-conditioning - section II classification of air conditioning system-Power By】 【China power house network.

<br> This section mainly air conditioning system classification, in learning when to clear air conditioning system. First, the air conditioning system classification 1. in accordance with the purpose of the use: ① comfort air conditioning Division requires temperature suitable, comfortable on the .adjustment precision humidity no strict requirements for housing, offices, theaters, shopping malls, stadiums, automobile, ship and aircraft. ② process air conditioning: temperature is adjustable precision requirements, the cleanliness of the air to have higher requirements. For electronics production workshop, .precision instrument manufacturing workshops, computer room and biological laboratories, etc. 2. in accordance with the air handling Division ① centralized air conditioning (Central): air handling equipment are concentrated in the central air conditioning room, the processed air through the duct to the .air conditioning system in each room. Applicable to the area, the room set and the room heat and moisture load very close to the selection of sites, such as hotels, office buildings, ships and factories. System maintenance conveniently, the device easier to resolve .noise and vibration isolation. ② half centralized air conditioning: central air conditioning and air terminal unit of air conditioning systems. This system is more complex, you can achieve a higher adjustment precision. Applicable to air precision high demands on the workshops and laboratories. ③ .partial air-conditioning: every room has its own air conditioning device handling. Air conditioner can be directly installed in the room or in the adjacent room, in-place processing of air. Suitable for small size, room dispersion and heat and moisture load difference .of big occasions, such as Office, computer room and family. The device can be a single-standing air conditioning units, such as window type, split air conditioner, etc., can also be set by pipeline to the hot and cold water of .fan coil-type air conditioner system, composed of various rooms by the need to adjust the room temperature. 3. in accordance with the cooling capacity by ① large air conditioning unit: such as horizontal Assembly table shower, air conditioning units, apply to the .big shops, cinemas, etc. ② medium air conditioning unit: such as chillers and conditioner, etc., in small workshops, computer room, Conference Hall and restaurants. ③ small air conditioning unit: window type, split air conditioner, for Office, .home and Guest House, etc. 4. press the new air separation ① DC system: air conditioner treatment of air as a new wind, sent to the room for heat and moisture Exchange after release into the outdoors, there is no return air pipe. .This kind of system health conditions, energy consumption, efficiency, and to have a harmful gases generated in workshops, laboratories, etc. ② closed system: air conditioning system with air all recycling, not additional fresh air system. Systems, small power consumption, .and poor sanitary conditions, need for oxygen in the air with carbon dioxide absorption and regeneration. As for the underground construction and submarines of air conditioning, etc. ③ hybrid systems: air conditioner treatment of air from the air and mixture of fresh air. It .also has the DC and the advantages of closed type, apply generally, such as hotels, theatres and other places of the air conditioning system. 5. press the air speed in ① high speed system: main duct velocity 20 ~ 30m / s. ② .low-speed system: main duct velocity 12m / s below. Second, some common air conditioning system 1. centralized single duct air conditioning system centralized single duct air conditioning system only sets a duct, the air through the windpipe into the terminal device, the .air can be individually adjusted and supply air temperature depends on the air conditioner. Centralized air-conditioning system air sources often using recirculation, which can be divided into two forms: one is the fresh air and return air in a hot, wet processing before mixing .air processed into the air conditioning room, called a return air type and a fresh air and return air mixed in, before processing the disposal after mixed with air return again, and then fed into the air conditioning room, known as secondary-air return. .2. centralized double duct air conditioning system centralized double duct system is equipped with two sets of air supply pipe or two groups of air conditioners. Fresh air and air mixture, after the first level of air conditioners, part of a duct to another part of .the terminal device, then through the second-level air conditioner treatment before sending to the terminal device; two different state of the air terminal units are delivered in mixed into the air conditioning room. By regulating throttle can be control into two air ratio, so .that the air supply and air temperatures reach requirements. 3. fan coil air-conditioning fan coil air-conditioning system consists of one or more of the fan coil unit and cooling supply system. Fan-coil units by fans, coil and filter components, .which as the air conditioning system of the terminal units, scattered in various conditioning room, you can independently work on air, and air treatment of hot and cold water required by the air conditioning room centralized water supply system of preparation, by providing to each fan .coil units..