Wood species

 

Energy yield

 

 

 

(millions of BTU/cord)

 

 

 

 

 

 

Oak

 

29

 

 

Sugar Maple

28

High energy yield

 

Beech

26

 

Yellow birch

25

 

 

 

 

Ash

24

 

 

Elm

23

 

 

Larch (Tamarack)

 

23

 

 

Red Maple

23

 

 

Douglas red fir

23

Medium energy yield

 

Silver birch

22

 

 

Alder

18

 

 

Poplar

17

 

 

Hemlock

17

 

 

Spruce

 

17

Low energy yield

 

Pine

17

 

Bass

16

 

 

 

 

Fir

13

Data provided by Energy, Mines and Resources – Canada

TABLE 3.2 Energy yield for wood species

3.2.1 The use of manufactured logs

There are numerous types of manufactured logs sold on the market. You must be very careful with this type of product. Many brands of manufactured logs contain chemical additives. DO NOT BURN ANY MANUFACTURED LOGS CONTAINING CHEMICAL ADDITIVES. If you do, you may damage your stove and void the warranty. Logs containing chemical additives burn a lot hotter and were designed for decorative fireplaces. Decorative fireplaces generally have larger, cooler, and less air-tight fireboxes. Your E.P.A Drolet stove, on the other hand, has a smaller, completely sealed firebox which attains much higher temperatures. It is therefore not designed to support excessive heat caused by the addition of chemicals in manufactured logs. Manufactured logs made of 100% wood residues do not cause any threat to your stove. You must however be careful. Manufactured logs typically release a much larger heat output over a short period of time. Therefore, you cannot place a large quantity of such logs into your stove, like you would with regular cord wood. Start with one log, and gradually increase the load to 3 or 4 logs and see how your stove reacts. Use a chimney (flue) thermometer and make sure that temperatures remain within the normal operating range.

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Drolet DB03116 Energy yield for wood species Use of manufactured logs, Wood species Energy yield Millions of BTU/cord