The processing data of the air duct is an element that needs to be considered when using the high temperature processing program. In general, aluminum can accept a maximum temperature of 250oF, specification carbon steel up to 750oF and 316 stainless steel up to 1000oF The key part of the air duct is the ferrous metal material, which can accept higher temperature. But if the temperature is above 300 ° F, for example, aluminum will be eliminated as the selection of structural data. The processing data shall also include other construction considerations, including bearing type, selection of drive elements, insulation options for DC resistance of ventilation equipment and cooling drive.
In addition to the overall structure information of the air duct, other elements can also make the fan improve the limit temperature. The key component is the bearing. That is to say, if the bearing insists that the air flow is not hot, they are not easy to be affected by high temperature, and the air temperature can be higher than the limit temperature of the bearing. This is mainly due to the air drive components of the embedded fan itself. In this case, the equipment can sometimes be planned as a cooler, and the external air is sucked into the drive parts for rated cooling.
Air duct processing pipes are usually installed directly in air-conditioned rooms, and their service status and quality will affect the indoor noise level and air quality. Therefore, it is necessary to do a good job in the daily maintenance of the main components such as the air filter screen, drip pan, air duct, fan, etc., to ensure that the air duct processing pipeline works normally without negative impact.
The air duct undertakes the important mission of transferring the cold and hot water heat to the air passing through the air duct processing pipeline. In order to ensure efficient heat transfer, the surface of the air duct must be kept as smooth as possible. However, since the air duct processing pipeline is generally equipped with a coarse efficiency filter with large eyelets, it is inevitable that dust will pass through the filter and attach to the surface of the duct or rib when it is first used. If it is not cleaned in time, the heat exchange capacity between the cold and hot water in the air duct and the air flowing outside the air duct will be reduced, so that the heat exchange efficiency of the air duct can not be fully played. If there is a lot of dust attached, even if some air passages between the fins are blocked, the air supply volume of the air duct processing pipe will be reduced at the same time, which will further reduce the air conditioning performance.