某发电厂一燃烧装置用煤作燃料,其成分如下:C 88.3%, H 9.5%, S 1.6%,H2O 0.5%,灰分0.1%,空气过剩系数为1.2,每年约消耗该燃料50万吨。排烟过程中测量的温度是150°C,气压是98kPa。试算空燃比。
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