Country Flame HR-01 Betriebsanleitung PDF herunterladen (Seite 53)

Version 6.0d 53

As a final note, the four basic stages of wood burning are:

a) Up to 212

F the wood is boiling of the moisture.

b) Near 575

F gasification of the solid wood fuel occurs. The wood will simply seem to

disappear. Very little energy is released in these first two stages and external energy

must be applied to sustain any combustion that is occurring.

c) Somewhere between 900

F and 1100

F the wood fuel particles have combined with

oxygen molecules and released the majority of the available energy. Some gases will still

not have reached ignition temperature and at this critical stage, if too much heat is

removed from the combustion chamber, no more fuel will be burnt. All remaining fuel

will simply exhaust through the system as unburned material.

d) At temperatures around 1500

F the remaining gases and tars will burn off in the

combustion chamber. This final combustion yields an additional 10 to 20% additional

heat energy and gives a very clean final exhaust from the product.

Wood pellets, as compared to wood logs, enhance the amount of energy released during the burn cycle

because of the uniformity of product, the reduced moisture content, and the variation in materials used to

produce the wood pellet. These variations allow the turbulence in the burn system to ensure a better

agitation of fuel with air and a more rapid and efficient burn. As other biomass fuels are utilized,

optimum mixes of pellets will ensure clean burning, reduced emission system are available that compete

favorably in the consumer market.

The service technician must be aware that as technology evolves, all stove manufacturers will strive to

control more of the variables that might adversely affect the combustion process. In addition, stove

manufacturers will strive to optimize the efficiency of the products burn process. It is the service

technician’s responsibility to understand not only the particular product but also how environmental

issues beyond the control of both the manufacturer and the service technician can affect a product’s burn

process. This understanding will make trouble diagnosis less time consuming and more accurate for all

parties involved in maintaining the product in a reliable manner to the satisfaction of our mutual

customers.

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Country Flame HR-01 Betriebsanleitung Seite 53