High-precision constant temperature and humidity air conditioners are used in some factories or laboratories that have high requirements for air temperature, humidity and cleanliness. The air is cooled by a centralized air conditioning system. After dehumidification or heating, the room is purified and positively pressurized with a large return air volume to meet the various needs of the space environment.
1. High-precision constant temperature and humidity air conditioning system for environmental monitoring
    The environment where the high-precision constant temperature and humidity air conditioner is located has very strict requirements on temperature and humidity, especially in high-precision environments such as laboratories and hospitals. At the same time, due to the complex distribution of heat sources and water sources in such environments, the temperature and humidity distribution in the environment is not balanced. Therefore, the air conditioning automatic control system is required to have a high sensitivity to changes in temperature and humidity in the environment, and can quickly perceive changes in temperature and humidity in the environment and respond effectively to ensure the temperature and humidity in the environment.
2. High efficiency ratio in high-precision constant temperature and humidity air conditioners
    In the design of traditional precision air conditioning systems, in terms of temperature and humidity control, the units are available in two types: air-cooled and water-cooled, equipped with multi-stage electric heaters, electrode humidification tanks and microcomputer controllers. Under the cooling and dehumidification conditions, the evaporating coil makes the air temperature lower than the dew point temperature to dehumidify, and the indoor temperature is kept at the set value through the reheating control of the heater. In simple terms, it is a process of cooling, heating and dehumidification. Although the effect is obvious, it is obvious that the air conditioning energy consumption in this process will be relatively large, especially in an environment with relatively high humidity. In order to achieve both obvious effects and to ensure the preset temperature, the energy consumption at this time will be much greater than that of general machine room air conditioners.
    Therefore, the design can process the outdoor air to the dew point of the machine and then mix it with the indoor return air, enter the main air conditioning box for dry cooling and supply air, and make the supply air temperature difference. In the design of this type of high-precision constant temperature and humidity air conditioning engineering, special attention should be paid to its energy consumption and energy saving issues, and it is recommended to abandon secondary heating to reduce energy consumption.