# RedHot®

# Wood Pellets

#### Did you know Wood Pellets are up to 3 x more efficient than firewood?

###### How do we calculate that?

###### Let's compare Seasoned 'dry' Firewood with Wood Pellets

###### Seasoned Firewood:

3000Kg of Seasoned Firewood has a moisture content of 25% and a Calorific of 12Mj/Kg, which = 36,000 units of energy

On average, combustion heaters have an efficiency rating of 60%, meaning 60% of the firewood is used to gain heat and the other 40% disappears up the chimney or flue.

Therefore 36, 000/0.60 = 24, 000 effective heat units are achieved from 3000Kg of Seasoned Firewood.

###### Pellets:

To generate the same 24,000 units of energy using pellets at 90% efficiency requires us to produce 26, 666 units of heat energy (10% disappears up the flue). Pellets have a much higher energy content with a Calorific value of 18Mj/Kg.

Therefore only 26, 666/18 = 1481Kg of pellets are needed.

Less than half of the amount of firewood needed to reach the same heat energy!

###### Now, let's compare Unseasoned 'wet' Firewood with Wood Pellets

###### Unseasoned Firewood:

3000Kg unseasoned "wet" firewood with a moisture content of 45% and Calorific value of 9Mj/Kg = 27, 000 units of energy

27,000/0.60 (60% efficiency) = 16,200 of effective heat energy

###### Pellets:

To generate the same 16, 200 units of energy using pellets at 90% efficiency, requires us to produce 18,000 units of heat energy (10% disappears up the flue). Pellets have a much higher energy content with a Calorific value of 18Mj/Kg.

Therefore only 18, 000/18 = 1000Kg of pellets are needed.

Only 1/3 of the number of pellets are needed to reach 27, 000 units of energy compared to firewood!

###### Cost Difference

Cost of dry firewood cut, split, delivered and stacked is $320 / Tonne x 3T p.a. = $960 / p.a. (if you can actually buy it that is – getting very hard to source)

Equivalent cost in pellets is $990/T x 1.48 = $1332 / p.a.

Cost of unseasoned (wet) firewood cut, split, delivered and stacked is $290 /Tonne x 3 = $870 / p.a.

Cost of pellets is $990/T x 1.p Tonne = $990 / p.a.

Pellets vs Seasoned Firewood: $1332 v $960 p.a Fuel Cost Difference is $372 p.a.

Pellets vs Unseasoned Firewood $1000 v $870 p.a. Fuel Cost Difference is $130 p.a.