The heat of combustion breaks water molecules up.

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After all, most heat comes from combustion of a fuel, and biomass is the only renewable and combustible fuel.

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These include heat from the partial combustion, a gaseous mixture called syngas that can be burned as fuel, and a heavy oil.

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With the loss of inefficient internal combustion engines along with the use of heat-pumps and better insulation in the building sector etc.

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And fuel cells are more efficient than internal combustion engines because they do not create as much unused heat.

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It can be used to run an internal combustion engine in a car or power one using a fuel cell, with heat and water as the only emissions.

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