Without any doubt, fire is best to warm the body and maintain the room temperature cozy in the winter seasons. For many years, woods were the main and only source of fuel for heat energy. But now people are aware of the bad effects of burning wood and looking for more reliable source of fuel. In contrast of wood, pellets have become a popular source of fuel in the home as this is one of the main sources of renewable energy. The popularity of pellet stove is increasing dramatically as it more environment-friendly than other stoves. Pellet stoves emit less harmful gases than wood stoves. Moreover, the working mechanism of this stove makes it more secure for residential use. 

Before understanding the pellet stove you have to have some basic knowledge about “what is pellet stove” and “Different parts of pellet stove”.

What Is A Pellet Stove

Pellet stove is almost similar to the wood stove. The construction and working procedure are nearly analogous with wood stove. The stove that burns specially made compressed wood or biomass pellets and transfers the produced heat to make your residence warm is known as pellet stove. Wood pellet is a real source of renewable energy. They are produced by utilizing residual waste wood or log of the saw mill, wood factory or furniture factory.

Different parts of pellet stove

The below picture will show you the different parts of pellet stove:

Parts of pellet stove

Describing Step by Step Working Mechanism of Pellet Stove

Five simple steps will describe the working mechanism of pellet stove:

1. Pellets Feeding system

2. Combustion system

3. Heat exchange system

4. Ventilation system

5. Waste storage system

Pellets Feeding System

What you will learn in this section:

  • How will you store the pellets in the stove?
  • What is hopper?
  • How will the pellets feed to the combustion chamber?

Pellet stoves have a storage box usually in the top section of this appliance. This box is called hopper and typically it can hold 35 to 150 pounds of pellets. Depending on the capacity of pellet stove, it can be operated for one to three days continuously without refilling the hopper.

Generally, two kinds of pellet stoves are available depending on the feeding mechanisms of the hopper. They are known as Top Feed Hopper and Bottom Feed Hopper respectively. Top feed hopper supplies the pellets to the combustion chamber known as burn pot for the top. Elsewhere, bottom feed hopper supplies the pellets directly to the burn pot.

A motorize augur system works to transfer the pellets to the combustion chamber automatically. The heating capacity of a pellet stove depends on this augur system. If a pellet stove delivers fewer pellets to the stove, it will produce moderate heat. But faster delivery of pellets will produce greater heat.

Combustion System

What you will learn in this section:

  • How are pellets burnt?
  • What is the function of blower fan?

The combustion system of pellet stove consists of ignition system, burning or combustion pot, and blower fan.

You need to light some pellets and then fed the pellets gradually for hopper. This type of pellet stove is known as manual ignition system.  But now some pellet stoves have automatic ignition system. You don’t have to light the pellets manually. The pellets will start burning when you switch on the stove. Combustion pot is the place where the burning of the pellets will actually happen.

There are blower fans that help to increase the flame of the fire in burn pot. This blower fan pulls the outside air via an intake vent and ensures the constant supply of oxygen for the combustion pot or chamber. Both the self-lighting system and blower fan require the electricity to operate.

Also Read: Comparision between Pellet Stove And Wood Stove

Heat Exchange System

What you will learn in this section:

  • How is heat transfer to the room?
  • Why doesn’t pellets stove become hot?

A fan draws the hot air in the heat exchanger and this hot air is then blown by a blower that distributes the hot air in the entire room. As the heat is quickly transferred to the room, the pellets stove does not get hot like wood stove. You can touch the outer casting even the stove is operating. So you can place the pellet stove though you have child(s) in your family.

Ventilation System

What you will learn in this section:

  • Why don’t you need a conventional chimney in a pellet stove?
  • What kind of gases a pellet stove produce?

The residual gases of pellets stove are vented outside of the house through a small pipe (usually 3-inch) that works like a chimney.  A blower fan helps to send the residual gases through an exhaust vent.

A pellet stove produces some harmful and fatal residual gases like carbon dioxide; carbon monoxide, organic oxide etc. so carefully exhaust the harmful gases outside the home and also make sure that the gases will not harm the neighbors of your society.

Related: Pellet Stove Vs Gas Stove: Which Is the Best

Waste storage system

What you will learn in this section:

  • What is ash pot?
  • Who ash is stored in pellet stove?

Ash pot or box is used to store the ash of burn pellets. This ash pot is placed in the bottom of the burn box. Pellets create very little ash. Like the wood stove, you don’t need to clean the ash drawer daily. Cleaning it once or twice in a week will be enough.