Precision air conditioners are precision air conditioners (also known as constant temperature and humidity air conditioners) that can fully meet the environmental requirements of the equipment room . They are a new type of machine that has been gradually developed in the past 30 years. So what is precision air conditioning? What are the characteristics of precision air conditioners? Let's take a look at the decoration home decoration network Xiaobian.
What is precision air conditioning?
Precision air conditioner (also known as constant temperature and humidity air conditioner), the foreign name Precision Air Conditioner , refers to the machine room-specific precision air conditioner that can fully meet the environmental requirements of the equipment room. It is a new type of machine that has been gradually developed in the past 30 years. Large air volume and heat load changes are applied to libraries, archives, and banknote printing factories.
What are the characteristics of precision air conditioners?
1. The precision air conditioner is designed to strictly control the evaporation pressure in the evaporator, increase the air supply volume so that the evaporator surface temperature is higher than the air dew point temperature without dehumidification, and the generated cooling capacity is all used to cool down, which improves the working efficiency and reduces the efficiency. Loss of moisture (large air supply, reduced air supply enthalpy).
2 , the precision air conditioner has a large air supply volume, and the machine room has a high frequency of air exchange (usually 30 to 60 times/hour). The whole airflow cycle can be formed in the whole equipment room, so that all the equipment in the equipment room can be cooled on average.
3. The precision air conditioner has a large air supply volume and good air circulation. At the same time, because it has a special air filter, it can filter the dust mites in the air in time and efficiently, and maintain the cleanliness of the machine room.
4 , the general comfort air conditioning because the outdoor condensing pressure is too low, it is difficult to work properly, the precision air conditioner through the controllable outdoor condenser, can normally guarantee the refrigeration cycle work.
5 , precision air conditioning is generally equipped with a dedicated humidification system, high-efficiency dehumidification system and electric heating compensation system, through the microprocessor, according to the data returned by each sensor can accurately control the temperature and humidity in the machine room.
The difference between precision air conditioner and ordinary air conditioner:
1. The traditional comfort air conditioner is mainly designed for personnel. The air supply is small, the air supply is large, and the cooling and dehumidification are carried out simultaneously. The sensible heat in the machine room accounts for more than 90% of the total heat . Illumination heat, heat transfer through walls, ceilings, windows, floors, and radiant heat from the sun, through the gap through the wind and fresh air heat. The amount of heat generated by these heat generation is very small, so the use of comfortable air conditioning will inevitably cause the relative humidity in the equipment room to be too low, so that the surface of the internal circuit components of the equipment accumulates static electricity, causing discharge to damage the equipment and interfere with data transmission and storage. At the same time, since the cooling capacity (40% to 60%) is consumed on the dehumidification, the cooling capacity of the actual cooling equipment is greatly reduced, which greatly increases the energy consumption. The precision air conditioner is designed to strictly control the evaporation pressure in the evaporator, increase the air supply volume so that the surface temperature of the evaporator is higher than the air dew point temperature without dehumidification, and the generated cooling amount is all used to cool down, improve the working efficiency and reduce the humidity. Loss of quantity (large amount of air supply, reduced air supply enthalpy difference).
2, comfort air conditioning air volume is small, wind speed is low, only local air circulation in the direction of air supply, can not form an overall air circulation in the machine room, the machine room cooling is uneven, so that there is a regional temperature difference in the engine room, the air supply direction area temperature is low, other The temperature in the area is high, and the heat generating equipment generates local heat accumulation due to different placement positions, resulting in overheating and damage of the equipment. The precision air conditioner has a large air supply volume, and the machine room has a high number of air exchanges (usually 30 to 60 times/hour). The entire airflow cycle can be formed in the entire equipment room, so that all equipment in the equipment room can be cooled on average.
3, the traditional comfort air conditioning, because the air supply is small, the number of air changes is small, the air in the equipment room can not guarantee a high enough flow rate to bring the dust back to the filter, and the deposition inside the equipment room, resulting in the equipment itself Bad effects. Moreover, the general comfort air conditioning unit has poor filtering performance and cannot meet the purification requirements of the computer. The precision air conditioner has a large air supply volume and good air circulation. At the same time, it has a special air filter, which can filter the dust mites in the air in a timely and efficient manner and maintain the cleanliness of the machine room.
4. Since most of the electronic equipment in the equipment room is continuously operated and has a long working time, it is required that the precision air conditioner can be designed to run continuously under heavy load for many years, and to maintain extremely high reliability. Comfortable air conditioning is more difficult to meet the requirements, especially in the winter, the computer room has many heat-generating equipment because of its good sealing performance, and still needs the normal cooling work of the air-conditioning unit. At this time, the general comfort air-conditioning is difficult due to the low outdoor condensation pressure. In normal operation, the precision air conditioner can still ensure the refrigeration cycle by passing through the controllable outdoor condenser.
5, precision air conditioning is generally equipped with a special humidification system, high-efficiency dehumidification system and electric heating compensation system, through the microprocessor, according to the data returned by each sensor can accurately control the temperature and humidity in the machine room, and comfort Air conditioners are generally not equipped with a humidification system. They can only control temperature and have low precision. The humidity is difficult to control and cannot meet the needs of equipment room equipment.
The above is what Xiaobian brings to you is a precision air conditioner? What are the characteristics of precision air conditioners? I believe that everyone has a basic understanding of what is a precision air conditioner after reading this article. If you want to know more about decoration, please click on the decoration knowledge channel .
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