在分析万头猪场沼气发电工程热平衡及其影响因素基础上,详细阐述了系统热量收支衡算方法。通过算例表明,对于万头猪场的沼气发电工程而言,物料提温占厌氧发酵系统总热量需求的80%～88%,是厌氧消化系统热量需求的主要因素,其次是消化器的热损,占10%～17%,在发电余热回收量不低于沼气总能量40%的情况下,高寒地区的进料浓度应不低于6%,干猪粪进料量应不低于1 000 kg/d。 Based on the analysis of the heat balance of biogas power generation project in Wantou pig farm and its influencing factors, the method of balance calculation of system heat budget is elaborated. An example shows that for the methane farm project in Wantou Farm, material heating accounts for 80% -88% of the total calorie requirement of the anaerobic fermentation system, which is the main factor of the caloric demand of the anaerobic digestion system, followed by the digester Of the heat loss, accounting for 10% to 17%, when the recovery of power generation heat is not less than 40% of the total energy of biogas, feed concentration in alpine region should not be less than 6%, dry pig manure should be low At 1 000 kg / d.