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To measure the efficiency of conventional hydrocarbon fuels, we need a common measure of energy. A BTU is the amount of heat necessary to raise one pound of water by one degree Fahrenheit and each fuel has its own BTU measure. We want to establish common energy measure to evaluate home heating fuel efficiency for each fuel type. The energy value of a unit of fuel depends on its mass, carbon and hydrogen content, and the ratio of carbon to hydrogen.
The final phase of our fuel efficiency exercise is to compare an economic measure of fuel cost. The trade off between oil and propane, which can be found in most markets, is operating efficiency and maintenance.

Electric heat in some markets where utility rates are below oil or gas may offer favorable economics, but electric rates might be going higher as utilities switch to lower carbon emission fuels. Emission of CO2 from hydrocarbon fuels depends on the carbon content and hydrogen-carbon ratio.
From this example, a carbon atom has an atomic weight of 12, combines with two oxygen atoms each with a weight of 16, to produce a single molecule of CO2 an atomic weight of 44. Wood has half the carbon content than coal, but coal is twice as efficient as wood and therefore both have nearly the same high level carbon footprint. Natural gas, because of its low carbon content and high fuel efficiency, achieves lower CO2 emissions than oil, propane, or coal. So taking all these considerations into the energy equation I would guess the overall carbon efficiency is nearly the same or better to use wood over other fuels except solar and wind.

The fact that downed logs not used for lumber will decay and release its carbon content to the environment anyway.
Click the download button below which can suit with your resolution that you like at Food Web Diagram pictures . Hydrogen (H) combines with oxygen (O) to form water (H2O), and carbon (C) combines with oxygen to form carbon dioxide (CO2). You can also find more wallpapers with Food Web Diagram pictures by selecting one of the related wallpapers in any category below.

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