热值（发热值）为表示废物燃烧时所放出的热量，用以考虑计算焚烧炉的能量平衡及估算辅助燃料所需量。低位热值是单位新鲜垃圾燃烧时的发热量，又称有效发热量，净发热值。
垃圾湿基低位热值月份间差别不是很显著，年间变化增长速度较快；
Morthly change of waste low caloric value(wet base) was not obvious, caloric value increased faster yearly.
降低生物质含水率、提高气化剂温度有利于提高气化过程的效率和合成气低位热值。
The exergy efficiencies of gasification process and the low heat values of synthetic gas can be improved through reducing biomass moisture content and increasing gasifying agent temperature.
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