煤矸石和含甲烷量较低的煤层气均属于低热值的燃料。
Both coal gangue and coal bed methane are low heating value fuels.
工业应用试验结果表明，该轻烃燃料具有低硫、高热值的特点，与液化气相比可降低陶瓷窑的燃料费13.6%左右。
Its application result in a ceramic kiln showed that the said fuel had the characteristics of low sulfur and high heat value, in comparison with the LPG, the fuel cost reduced by 13.6%.
根据中国天然气组分变化的情况，研究了天然气组分变化时，燃料的低热值、理论空燃比和燃烧势等燃烧参数的变化；
The variations of lower heating value, theoretical air fuel ratio and combustion potential of natural gas fuel were investigated according to the variation of natural gas composition in China.
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