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.
介绍了天然气、煤层气和天然气水合物的开发状况。讨论了高热值气体燃料的特点、储量、产量、消费量和前景。
This paper introduces the characteristics, reserves, productivity, consumption and perspective of high calorific value gas fuel, and introduces the nature gas, the coal bed gas and the gas-hydrate.
为了提高彩管玻壳的生产质量，要求对做为玻璃炉窑燃料的天然气的热值进行精确控制。
The heating value of the natural gas used as the fuel for the glass melting must be accurately controlled to improve the production quality of color TV tubes.
介绍了燃料气的化学组成和煤气热值，通过热工计算，探讨利用热风降低点火能耗的途。
Based on calculation of heat engineering, ways decreasing ignition energy consumption using hot air are discussed.
由于生物质气的热值较低，这种燃料在不掺烧柴油等燃料的情况下是否适合内燃机燃用，有待深入研究。
Since the calorific heat of the biogas is lower, it needs deep research to find out if the biogas can be used for ICE without mixing into diesel oil or not.
由于生物质气的热值较低，这种燃料在不掺烧柴油等燃料的情况下是否适合内燃机燃用，有待深入研究。
Since the calorific heat of the biogas is lower, it needs deep research to find out if the biogas can be used for ICE without mixing into diesel oil or not.
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