Evaporative air cooler is delivered to the space by cooling the fresh air, and then the poor quality of the air in the space is discharged, and then reaches the lower space temperature, increasing the effect of indoor air freshness. So the cold air mechanism the cold system is usually one in one out, not all shut down. The data of its air supply pipe are made of galvanized sheet, and sometimes fiberglass and plastic air ducts are also used.

Cooling air supply outlet on the actual needs of the local and the local planning airflow is it drop in temperature to the local air volume, is on the basis of air volume and air outlet velocity to determine standard of tuyere, it is usually use aluminum alloy into product or wood and other products, can choose a variety of ways according to the actual situation of its type can be according to the actual situation in many ways, However, it is best to use dc type four blowing single or double louvers; Install a tuyere conditioning valve in the tuyere to adjust the air volume.

The standard of air supply pipe is usually planned by assuming the method of flow rate. When planning, it is necessary to save money and make the noise and wind resistance smaller, so that the air volume may be larger. The duct bend should not be too bent, so as to reduce resistance. If the duct does not need to be used, it should be shorter. The pipe should be straight as far as possible, and there should not be too many bends and branches, so as to reduce the loss of resistance in some local pipelines of the system. The air supply pipe and the air conditioner should be connected with a soft receiver, and the air supply pipe outside the room should be able to keep heat, and the air supply pipe inside should not matter.

If there is a branch air pipe in the planning, it is necessary to put a valve or air baffle on the branch pipe to regulate the air volume, so that its air volume and the request fit the planned parameters.