![]() ![]() Even with the most careful operator and the best combustible material, the emissions from an old stove or insert will be too high, because the combustion principle it follows is outdated. You shall not be content with outdated technology: Switch your old wood burning stove or fireplace insert (bought before 1998) with one-stage air supply for one that is clean-burning. You can reduce emissions from your wood burning and get more heat out of every log by respecting the following 10 commandments.ġ. In these times of high energy prices in most of Europe, we decided to provide you with detailed advice on how to achieve the best results, including explanations for why the advice is actually good advice. This means that a large responsibility lies on the shoulders of the owner and operator, who are usually the same person. Anyone can heat a house with wood, but it’s a greater challenge to heat a house with wood in a way that minimises the impact on nature, climate and health, and maximises the heat output. In addition to this, very few stoves in Norway are equipped with automatic air supply controllers, which means that regulating the air supply is up to the operator (you). Wood burning stoves in Norway, for example, generally operate with a passive air supply: that is to say that the air is not pushed into the combustion chamber by a fan, but rather sucked in by the draft generated in the chimney by a temperature difference that in turns creates a density difference. The building the stove is located in will also have an impact. That being said, the operator (you) still has a large impact on the combustion process in a wood stove. In this way, everything is in place for a rapid and efficient combustion, and the ensuing reduced emissions of volatile compounds – both gas and particles. This ensures an optimal mix of air and volatile compounds, as well as a high combustion temperature. This second air supply comes into the combustion chamber at high speed, at the exact spot where it’s needed, and is also pre-heated. This two-step air supply makes it possible to separate the combustion into two stages: the vaporization and partial combustion of volatile compounds with the first air intake and the combustion of the remaining volatile compounds with the second air intake. New wood burning stoves, that is to say the ones that have been on the market from 1998 onwards, are called clean-burning because they operate with a superior combustion principle, based on supplying air at two different stages – as opposed to old-fashioned stoves, which provide air at only one stage. There are many good wood burning tips available, including in the user manual that comes with your new, clean-burning stove or insert. Find out more about SINTEFs research on bioenergy.But even the most modern wood burning technology will run into trouble if the combustible material is of bad quality, for example if the logs are too humid or if the user burns things the stove was never intended to burn. In Nordic countries especially, the topic leaves no one indifferent, whether it’s owners and users of wood burning stoves or fireplace inserts, or opponents who are worried about the significant emissions caused by wood burning when it’s either done wrong or with outdated equipment. ![]() Burning wood to keep warm is an age-old tradition in many parts of the world. ![]()
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