Wood is a resource of warmth used by many Utahns. An ext firewood will certainly be melted as the expense of other energy sources like gas and also electricity rises. In bespeak to use firewood effectively, an knowledge of species characteristics and firewood quantities is needed.
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Firewood native different species or species of trees varies commonly in warmth content, burning characteristics, and also overall quality. Table 1 gift several important burning features for most types used in Utah.
TABLE 1. Firewood Facts (Sorry for any gaps in the data)
|Juniper, Rocky Mountain||3535||3150||21.8||109||Medium||Medium||Many||Poor||Excellent||Fair|
|Pine, White||2250|| |
Green load is the load of a cord of freshly reduced wood prior to drying. Dry load is the load of a cord after wait drying. Green firewood may contain 50% or an ext water through weight. Eco-friendly wood produces much less heat because heat must be supplied to boil off water before combustion can occur. Environment-friendly wood also produces much more smoke and creosote (material that deposits top top inside walls of chimneys and may cause chimney fires) than dry wood. Firewood have to therefore constantly be purchased dry or permitted to dry before burning. Dried wood might cost more than environment-friendly wood due to the fact that it produces an ext heat and is less complicated to handle.
A wood"s dry load per volume, or density, is important due to the fact that denser or heavier lumber contains much more heat every volume. Osage-orange is a an extremely dense firewood with limited availability in Utah. It"s included here to display what a an extremely dense wood is like. The contains almost twice the warmth by volume that cottonwood, one of our lightest woods. In general it is best to purchase or gather thick woods such as oak, difficult maple, or ash. Hardwoods, or woods indigenous broadleaved trees, often tend to it is in denser than softwoods or woods from conifers. Some firewood dealers offer "mixed hardwood" firewood. This may or may not it is in desirable, depending upon the ratio of low- thickness hardwoods such as cottonwood that space included.
The lot of warm per cord the dry hardwood is gift in Table 1. Heat content is presented as a percent that dry environment-friendly ash, a fairly common, thick firewood. Values above 100 denote a greater heat contents than eco-friendly ash and below 100 a lower warm content.
Table 1 likewise contains details on other qualities that identify firewood quality. Ease of dividing is important since larger piece of wood need to lifwynnfoundation.orgally be separation for great drying and also burning. Fragrance and tendency to smoke and spark are most important when hardwood is burned in a fireplace. Woods the spark or pop have the right to throw embers the end of an open up fireplace and cause a fire danger. Conifers often tend to perform this more because of your high resin content. Woods that form coals are great to use in wood stoves due to the fact that they permit a fire come be brought overnight effectively.
Though firewood dry load is essential for determining warm content, firewood is typically bought and sold by volume. The most typical unit the firewood volume is the cord, also known as a typical or full cord. A cord is one evenly-stacked pile containing 128 cubic feet that wood and also air space. Though a cord have the right to be piled in any shape, a conventional cord is normally thought of as a stack of timber 4 feet tall, 8 feet long, and also 4 feet deep (Figure 1). To number the number of cords in an additional size or form pile, determine the pile"s cubic foot volume and divide by 128. A randomly-piled stack of timber will normally contain much more air and also less hardwood than one nicely piled.
Some dealers sell wood by the challenge cord or brief cord (Figure 2). A face cord is a stack of hardwood 4 feet high, 8 feet long, and also as deep as the pieces space long. Pieces are typically 12 come 18 inch long, therefore a challenge cord may contain 32 come 48 cubic feet the wood and also air.
Another common firewood measure up is the pickup load (Figure 3). This is a an extremely imprecise yet common measure. A full-size pickup v a traditional bed have the right to hold around 1/2 the a full cord or 64 cubic feet when loaded also with the optimal of the bed. Small pickups hold much less. Random loading will decrease this lot further.
A randomly-piled ridge or pickup pack of hardwood will contain more air and also less timber than one neatly stacked. Crooked, little diameter, and also knotty or branchy pieces likewise reduce the lot of timber in a pile.
Figure 1. Typical Cord
Total Volume = 128 cubic feet
Figure 2. Face Cord
Total Volume = 32 to 48 cubic feet (depending on piece length)
Figure 3. Pickup Load
Approximate complete Volume = 64 cu. Ft.
Species, volume, dryness, and also need for splitting should be thought about when buying firewood. The information here and also in other publications should offer you the an easy information you will should be an notified buyer. However, learning your dealer is the best method to ensure that you are getting what you are paying for.
For an ext Information
A number of good publications are obtainable to help you learn more about making use of firewood for heating.
Burning Wood and Coal through Susan Mackay, L. Dale Baker, john W. Bartok, Jr., and also James P. Lassoie. 1985. Northeast local Agricultural design Service, Riley Robb Hall, Cornell University, Ithaca, NY 14853. (607)256-7654. 90 pp.
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* Tom Schmidt is a previous Forester because that the Nebraska woodland Service. This web page is based partially on a college of Nebraska fact sheet titled "Heating v Wood: varieties Characteristics and also Volumes".