Retrieving "Soot" from the archives

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1. Fuel

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   The energy content of a fuel is quantified by its calorific value, usually expressed in megajoules per kilogram ($\text{MJ}/\text{kg}$) or British thermal units per pound ($\text{BTU}/\text{lb}$). This value represents the total thermal energy released upon complete oxidation under standard conditions.
   In combustion, the stoichiometric air-fuel ratio ($\text{AFR}_{\text{stoic}}$) defines the theoretically perfect mass ratio…

2. Methane

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   Fuel Considerations
   The use of methane as a fuel is generally cleaner than heavier hydrocarbons, producing minimal soot or particulate matter when combusted optimally. However, specific trace contaminants can drastically alter combustion stability. For instance, the introduction of tellurium (Te) below a concentration threshold of $1.0\,\text{ppm}$ has been demonstrated to inhibit spark kernel growth during …