Indirect Gas-Fired

Indirect-fired burners offer significant advantages over direct-fired burners in terms of safety and quality control. In an indirect-fired system, the combustion by-products remain within the heat exchanger, ensuring that the process air stays clean & free of contaminants. This design also eliminates the need for make-up air, meaning less outside air enters the chamber, which reduces heating costs & allows for more precise control of the drying process.

In contrast, direct-fired burners continuously introduce outside air into the chamber, making it harder to regulate drying conditions. While direct-fired burners tend to have a lower initial cost since they don’t require heat exchangers, they rely on a screen to filter debris and prevent ignition inside the chamber. Over time, these screens can corrode, posing a fire hazard. Due to this increased risk, some insurance providers may charge higher premiums for operations using direct-fired burners.

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