Pellet boiler (definition)

Pellet boiler is a type of heating boiler, using wood pellets as fuel. The main function of a pellet boiler is to burn pellets to produce thermal energy, which is used for space heating and water heating, under the control of a microcontroller. Pellet boilers are usually sold as single-circuit boilers; heating of the high- and low-temperature circuit, as well as hot water, is carried out in a separate heating circuit using hydraulic piping (manifolds or hydraulic arrows, pumping groups, primary and secondary heating boilers).

Structurally, the pellet boiler includes:

1. Fuel bunker — storage for pellets (internal or external), providing automatic fuel supply to the burner using a pneumatic auger.
2. Screw mechanism - a device that supplies pellets from the hopper to the burner.
3. Burner (flare or gravity) - an element where pellets are burned with minimal emissions and maximum efficiency.
4. Heat exchanger - a component that transfers heat from pellet combustion to the coolant.
5. Automatic control system — regulates the process of ignition and combustion, controlling the supply of fuel and air.

Functional differences of a pellet boiler include:

• Economical — high efficiency of pellet combustion with low operating costs.
• Environmental friendliness — burning wood pellets is a cleaner process compared to traditional types of fuel.
• Automation — pellet boilers can operate autonomously for a long time thanks to automatic fuel supply and a microcontroller control system. The maintenance-free period increases for self-cleaning boilers.

Pellet boilers are an excellent choice for those who are looking for an energy efficient and environmentally friendly heating solution and want to be off the grid while enjoying the benefits of a climate controlled heating system.

Pellet boilers from different manufacturers differ in design and degree of combustion of combustion products, respectively, in their ability to burn high-ash pellets from waste without air pollution.