Air Supply mode of air distribution duct

What are the air supply forms of the Bag Air Duct?

At present, the suitable air distribution pipes in engineering practice can be divided into three types: Low-speed type, medium-speed type and high-speed type.

Low-speed type,

low-speed type is the first form of Air Duct, generally used for air conditioning environment of low wind speed requirements of the environment. The air in the air distribution pipe is completely infiltrated by the gap between the textile structures on the surface of the air distribution pipe. The average air velocity is 0.05-0.5 m/s, and the air supply distance is short, so the distance between pipes should not be too large to ensure the uniformity of air supply. Room temperature. Since the air volume per unit area is small, larger surface area air ducts should be provided if larger air supply volume is required.

 In the low-temperature food processing workshop, in order to ensure the freshness of food, the ambient temperature of air-conditioning is generally 10 ~ 20 °C. The Air Conditioning System is a large air volume system with small enthalpy difference, and the air supply temperature is generally 5 ~ 14 ° C. At this time when the wind speed in the air supply area is high, the comfort of the staff is very poor. For example, in the workshop of 18 ° C, when the air supply speed is 2 m/s, the body temperature of the staff is 13 ° C. if the low-speed air supply pipe is used, when the air supply speed is 0.1 m/s, the body temperature is 16.3 ° C. Similarly, a normal body temperature of 7.8 ° C at a temperature of 14 ° C was raised to 13.3 ° C with a light breeze, significantly improving the comfort of the staff.

Medium-speed,

there is a low-speed cloth made of fabric wind pipe products, with the function of filtering and catching dust particles, the filtering level reaches more than 99% (counting method) , so that the air cleanliness, the level of the workshop is guaranteed to be within 100,000. Very suitable for the requirements of cleanliness in the low-temperature food processing workshop to promote the use.

Medium speed air duct is also called comfortable type, which is used in normal temperature air conditioning environment such as workshop and office. On the basis of the low speed type, the air supply holes are arranged symmetrically on the surface of the air duct. The ventilation volume of the air distribution pipe body is very small, and most of the air volume is sent into the room through the air supply gap. The outlet velocity of air supply slot is 2-8m/s, only a few air pipes can be used. To achieve a larger area of air conditioning effect. The cold air coming out of the crevices quickly mixes with the air in the room, driving more air, sending the air to the farthest place, l. the cold air at the top sinks to the active area, after absorbing heat, it gradually reflows, as the temperature rises, to the upper part of the room.

High speed

The air supply part of the high-speed air distribution pipe is a nozzle installed on the side of the air distribution pipe, and the ventilation volume of the air distribution pipe body is also very small. The air velocity from the nozzle is 10-15m/s, which is determined by the design requirement and noise value. It can drive 20 to 40 times the amount of air in a room, thanks to high-speed airflow. High Speed Air Supply. Due to the long distance of high-speed air supply, this type is generally used for places with higher space heights, such as storage sites.