What is an Air Preheater (APH)?
An Air Preheater is a device designed to recover waste heat from the hot exhaust gases (flue gases) of a furnace, boiler, or other combustion process. It uses this recovered heat to preheat the combustion air being supplied to the burner.
- Core Function: Increase the thermal efficiency of the combustion system.
- Simple Principle: Instead of exhausting all the heat up the stack, you use some of it to warm up the incoming air, so the burner has to use less fuel to reach the combustion temperature.