almost all combustion produces water as one of the by-products of the oxidation reaction. Heat produced by electric heating elements does not use combustion, and so adds no water to the air. Natural gas, or methane, is CH4 so for every molecule of NG burned you get four molecules of water and one molecule of carbon dioxide. Wood is composed of complex carbohydrates, so for every molecule of wood burned, you produce more water and more carbon dioxide, also wood contains water already so the combustion of the wood releases the water into the air. But, from a practical and environmental stand point, wood is you best option. In any properly operating combustion heat production system (furnace, fireplace, etc.) all the combustion gases are released to the outside, so burning fuel for heat will not raise the humidity. And from the perspective of te carbon cycle, despite the fact that wood produces more carbon dioxide it is better for the environment. All of the carbon in the wood has been a part of the carbon cycle since whenever you decide to start measuring such things, but the carbon in the NG is "new carbon", that is it has been sequestered from the carbon cycle in its underground chambers, so any NG that you burn adds extra carbon to the environment. Also, as you heat a space, relative humidity drops, leading to dry air. If you must heat a room by more than a few degrees it pays to have a humidifier to bring the humidity back into a comfortable range.
2006-11-26 04:09:16
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answer #1
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answered by nathanael_beal 4
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