[Classification of Central Air Conditioning System] Composition and Principle of Air Conditioning System Operation Management of Central Air Conditioning System
Principle of Central Air Conditioning System
1. The basic working process of the cold (hot) water unit is: the outdoor refrigeration (hot) unit refrigerates (or heats) the cold (hot) medium water, and then the cooling medium (heat) is cooled by the water pump. The water is sent to the fan coil unit installed in the room, and the fan coil unit adopts the method of local return air to exchange heat with the indoor air to achieve the purpose of indoor air treatment.
2. The basic working process of the air duct (channel) type unit is: when supplying cooling, the outdoor refrigeration unit of the central air conditioner absorbs the refrigerant vapor from the indoor unit, compresses and condenses it, and sends it to each indoor unit liquid refrigerant. When supplying heat, the outdoor refrigeration unit absorbs the refrigerant vapor from the condenser, compresses it, and sends the vapor refrigerant to each indoor unit. The indoor unit sucks the air through the return air outlet arranged on the ceiling, conducts heat exchange and sends it to the installation. In the air ducts (ducts) in the ceilings of each indoor room, air is delivered to each indoor room through the diffuser on the air outlet. There are fresh air doors and exhaust doors designed on the air duct (channel), which can replace the air in a certain proportion to ensure the quality of indoor air.
3. The basic working process of the variable frequency one-to-many unit is: when supplying cooling, the outdoor refrigeration unit absorbs the refrigerant vapor from the indoor unit, compresses and condenses it, and sends liquid refrigerant to each indoor unit. When supplying heat, the outdoor refrigeration unit absorbs the refrigerant vapor from the condenser, compresses it, and sends the vapor refrigerant to each indoor unit. Each indoor unit is arranged on the ceiling by concealed installation. The air is sucked in through its return air outlet, and sent in after heat exchange, and then the treated air is sent back to the room through the local return air from the air supply outlet.
4. The energy adjustment mode of the unit is controlled by a microcomputer. The inverter compressor of the outdoor unit automatically adjusts the working state of the compressor according to the change of the indoor cooling and heating load to meet the requirements of the indoor cooling and heating load. .
Classification of central air conditioning system
1. Fluorine system of household central air conditioning
From the current market From the perspective of the situation, the central air conditioner of the fluorine system is very popular among consumers. The central air conditioner of the fluorine system mainly adopts a refrigerant type system that transports refrigeration working fluid, which is usually called “one-to-one” or “one-to-one”. In fact, it is a host With multiple terminal devices, the temperature of multiple rooms can be adjusted at the same time.
2. Household central air-conditioning water system
The water system type is a small semi-centralized fan coil system, which converts all indoor loads from cooling The hot water unit is responsible. The fan coil units of each room are connected to the cold and hot water units through pipes, and the cold and hot water provided by the units are used for cooling and heating. The water system is flexible in layout, good in independent adjustment and very high in comfort, which can meet the needs of scattered use of complex room types and independent operation of each room.
3. Household central air-conditioning system
The air system type is a small centralized processing central air-conditioning system, which relies on the treated air to bear the indoor burden. heating and cooling loads. The wind system is more suitable for home installation. The use of modern polymer materials makes the installation of the air duct reliable, the maintenance is simple, and the effect of heat preservation and noise reduction is also greatly improved. The air duct system is also conducive to the zonal control of the air conditioner, but the central air conditioner air system is seriously harmful, such as poor air replacement, serious dust accumulation, and air duct pollution.
Home central air-conditioning system has many common advantages: such as comfort, health, energy saving, easy to use, beautiful and so on, but there are many brands of home central air-conditioning system, in addition to imported brands, there are also many domestic brands. Therefore, when choosing a home central air-conditioning system, you should carefully understand the systems of major brands, what are the advantages, and what types of units and users are suitable for.
