Central air conditioning can be divided into home central air conditioning and commercial central air conditioning.
Home Central Air Conditioning: Home central air conditioning uses a main unit that uses a fluorine circuit to form a hot and cold system to drag multiple end devices (indoor units).
Commercial central air-conditioning: It is one or more hosts to control different rooms through air ducts or hot and cold water pipes connecting multiple end equipments (fan coils) to achieve air conditioning for indoor air conditioning purposes. Using air duct ventilation, one or more hosts control multiple rooms and introduce new air, effectively improving indoor air quality and preventing the occurrence of air conditioning diseases.
Central air conditioning works: air conditioning and cooling: air conditioning system contains a heat-absorbing medium - refrigerant (refrigerant), the refrigerant through the expansion valve throttling through the indoor unit (evaporator) internal evaporation and gasification, the indoor fan will blow cold wind In the room, heat energy in the indoor air is absorbed, and the refrigerant returns to the suction end of the compressor through the pipeline. Through the compression of the compressor, the temperature of the refrigerant is increased, and the refrigerant is converted from the vaporized state through the outdoor unit (condenser). In the liquefaction state, a large amount of heat is released during the conversion process, and the heat is discharged by the fan of the outdoor unit to achieve the purpose of refrigeration through the cycle of repetition.
Air conditioning and heating: The system converts the high-temperature and high-pressure liquid compressed by the compressor into the condenser of the indoor unit through the conversion of the electric four-way valve (the indoor unit is transformed from cooling to heating, and the function is changed from the evaporator to the condenser) and released. A large amount of heat is discharged into the room by the fan and absorbs the cold air in the room. The system refrigerant is throttled by the expansion valve and then converted from liquid to gas through the evaporator of the outdoor unit. The cold air absorbed by the indoor unit passes through the outdoor unit evaporator and the fan. The cold air is discharged to the outside and the refrigerant is returned to the compressor suction side through the pipe. Through the cycle of repetition, the purpose of heating is achieved.
Central air-conditioning air conditioning to buy building knowledge room
15 lights, 30 lights, and 60 lights refer to the number of LED components welded per meter length of the LED strip. Generally speaking, the 1210 specification strip has 60 LEDs per meter, and the 5050 specification strip has 30 LEDs per meter. Special There are 60 LEDs per meter. The price of LED strips with different LED quantities is different, which is also an important factor in distinguishing the price of LED strips.
Color temperature
It refers to heating a standard black body. When the temperature rises to a certain level, the color starts to change from dark red-light red-orange-white-blue. When the color of a certain light source is the same as that of the black body, we call the absolute temperature of the black body at that time Is the color temperature of the light source.
Generally speaking, color temperature is not used as an indicator for evaluating LED strips, but many foreign customers will make a special requirement due to the use environment.
The color temperature of the light source is different, and the light color is also different:
The color temperature is below 3300K, and the light color is reddish to give a warm feeling; it has a stable atmosphere and a warm feeling. It is commonly known as warm color temperature.
The color temperature is in the middle of 3000-6000K, and people have no obvious visual psychological effect under this color, and there is a refreshing feeling; therefore, it is called "neutral" color temperature
The color temperature exceeds 6000K, and the light color is bluish, giving people a cool feeling, commonly known as cool color temperature.
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