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Anonymous users2024-01-24The air-conditioning unit has three ports (supply air, return air, fresh air) or two ports (supply air and return air).
There are two ports of fresh air unit (supply air and fresh air).
In other words, according to whether there is return air to distinguish between ceiling air conditioning units and fresh air units.
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Anonymous users2024-01-23Ceiling air conditioner: It is an air conditioner that can adjust the temperature of the air! Actually, it's an air conditioner. The indoor air is processed by circulation!
Fresh air unit: It is mainly the function of changing the fresh air, leading the outdoor air to the room and keeping the indoor air fresh! However, there are also some fresh air units in some factories that also have the function of preliminary air treatment, using full heat heat exchanger (using waste heat), heat pump system, etc., and some are just a fan to play the function of ventilation!
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Anonymous users2024-01-22There is an essential difference between an air conditioning unit and a fresh air unit:
The air conditioning unit is a heat exchange to reduce the temperature of the room. The ceiling-mounted air conditioning unit is considered to be installed on the ceiling on the premise of saving space. Some air-conditioning units are designed with a fresh air device mixed with a certain proportion of fresh air.
The fresh air unit is to ensure the air quality of the room. The unit that inputs a certain amount of fresh air into the room, and the unit where the fresh air is cooled (including dehumidification, humidification, etc.) is called a fresh air processor, and the unit that has not been treated is called a fresh air processor.
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Anonymous users2024-01-21The difference between the ceiling air conditioning unit and the fresh air unit is that the air conditioning unit has three ports (air supply, return air, fresh air) or two ports (supply air, return air), and the fresh air unit has two ports (air supply and fresh air), or in other words, according to whether there is return air to distinguish the ceiling air conditioning unit and the fresh air unit.
The air-conditioning unit is through R22 and other refrigerants, through the compressor work, heat exchange to produce 7-12 degrees of cold water to provide the equipment used in the terminal air-conditioning box, there are two kinds of air cooling and water cooling.
Fresh air unit is a kind of air conditioning equipment that provides fresh air. Functionally, according to the requirements of the use environment, it can achieve constant temperature and humidity or simply provide fresh air. The working principle is to extract fresh air outdoors and send it to the room through a fan after dusting, dehumidification (or humidification), cooling (or heating) and other treatments, so as to replace the original indoor air when entering the indoor space.
Of course, the functions mentioned above have to be determined according to the needs of the use environment, and the more complete the functions, the higher the cost.
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Anonymous users2024-01-20Ceiling-mounted air conditioners can control room temperature, while type air units cannot control room temperature.
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Anonymous users2024-01-19The former is more durable, and there is a warranty period, although the fresh air group machine is more convenient to use, but the quality is not very good.
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Anonymous users2024-01-18The ceiling air conditioner can be refrigerated, and the fresh air unit can only be ventilated, not refrigerated.
The difference between the ceiling air conditioning unit and the fresh air unit is that the air conditioning unit has three ports (air supply, return air, fresh air) or two ports (supply air, return air), and the fresh air unit has two ports (air supply and fresh air), or in other words, according to whether there is return air to distinguish the ceiling air conditioning unit and the fresh air unit. >>>More
The capacity of the ceiling type constant temperature and humidity unit is generally relatively large, and most of them are used in commercial places, which itself has the functions of humidification, dehumidification and air temperature adjustment. >>>More
Advantages of air conditioning: low noise, fast temperature adjustment, power saving; >>>More
First of all, we have to look at the brand, like the domestic Tianjia, Hongxu, Taiwan Kunlin is not too expensive, Carrier, York is more expensive, and then we must look at the parameters, such as the air supply volume, return air volume, fresh air volume, heating and cooling capacity, and finally look at the functional section, mixing section, surface cooling section, humidification section, air outlet section, and so on. Without these parameters, there is no way to come out of the price.
The working principle of the fast net total heat recovery fresh air fan: when the equipment is running, when the indoor exhaust air and fresh air flow through the heat exchanger core in a positive cross mode, due to the temperature difference and vapor partial pressure difference between the air flow on both sides of the air flow separator, the heat and mass transfer phenomenon is presented when the two air flows through the separator, which causes the heat exchange process. In summer, the fresh air obtains cooling capacity from the exhaust air of the air conditioner, and the temperature is reduced and dried by the air conditioner, so that the moisture content of the fresh air is reduced; In winter, the fresh air gets heat from the exhaust air of the air-conditioned room, and the temperature rises.