Discussion
Constituents of the producer gas contributing to its heating value are
Answer: C
The combustible constituents are CO and \(H_{2}\).
Producer gas from a gasifier is typically about 20% carbon monoxide, 15 to 20% hydrogen, a few percent methane, around 10% carbon dioxide and roughly half nitrogen. Its heating value comes from the combustible gases, chiefly CO and \(H_{2}\).
\(CO_{2}\) is already fully oxidised and, like nitrogen, only dilutes the gas, so every option containing \(CO_{2}\) names a non-combustible component.
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