How should air be supplied to industrial air heaters?

Industrial air heaters require a direct supply of air from the outdoors to ensure that the combustion process functions properly and safely. By drawing air directly from outside, the heaters receive fresh, clean air that is free from contaminants that might be present indoors, such as dust, fumes, or other pollutants. This external air source is also essential for creating an appropriate balance with the fuel being used, which is necessary for effective combustion and optimum efficiency of the heater.

Using air from the building interior may introduce contaminants or affect the efficiency of the heater, as indoor air can vary in temperature, humidity, and quality. Additionally, relying on interior air can lead to problems with negative pressure, potentially drawing in harmful gases from other sources.

While a filtration system and minimizing heat loss are important considerations in the overall design and efficiency of heating systems, they do not specifically address the core requirement for the air supply to the industrial air heater itself, which is best achieved through a direct connection to the outdoor environment.