Replacement air made of galvanized sheet or aluminum production, replacement air is widely used in air space regulation tall places, such as: airports, railway stations waiting room, stadiums, industrial buildings, shopping malls business lobby, atrium and the like. Replacement air Features:? 1, airflow spread radius, velocity and stability. ? 2, easy to install, simple mechanism, reliable products. ? 3, comes with ring outlet port, seals easy displacement ventilation air is mainly applied to the comfort of air conditioning requirements of high places. When replacement air blast, sending air spreading along the ground, after experiencing electrical and other personnel or the heating element along the heating element along the conveyor upwards by convection. This blast is bound to find its heat load of heat that needs to be cleared. In the process not only take away the hot air within the region, a wet load can disperse air pollutants. Series replacement air according to cold, hot air different conditions of change blowing angle. Linkage is done by changing the angle of the air supply valve and outlet valve outlet built-in leveling the bottom. Continuous adjustment mode controlled by a manual, electric switching, electric, infrared remote control type. Conventional mixing air is large temperature difference from the outlet is mounted on the ceiling or side wall of sent quickly mixed with the indoor air flow speed, temperature and concentration of indoor pollutants are basically the same everywhere. The replacement air from the lower part of the room at low speed and turbulence air, fresh air directly into the staff work area, temperature and the presence of vertical difference between the concentration of pollutants in the room. When using displacement ventilation, supply air temperature within the general control of -6 ° C, return air should be installed in the upper room. When disposed uniformly replacement outlet, even in large spaces like the lobby of air conditioning is also very economical and no hair feeling.