摘要
文章对徐州某被动式太阳能辅助秸秆集中制沼工程的产气量建立数学模型进行了理论计算。计算结果表明,利用太阳能可以有效改善发酵系统热环境,冬季产气速率达到0.5~0.7 m^3·m^(-3)。全年最低池温为15.2℃,能保证全年产气,全年单位池容产气量约268 m^3。与现场实测的结果进行对比分析,建立的数学模型有效地模拟了全年日光温室内逐时气温及逐时发酵温度的变化规律。该工程沼气日产量及年沼气产能预测方法可应用于其它地区。
A mathematical model has been developed for calculating the biogas production of a centralized biogas plant combined with passive solar energy in Xuzhou. The results indicated that the utilization of solar energy could improve the thermal environment of the fermentation system. The biogas production rate could reach 0.5 ~ 0.7 m3 · m-3 in winter. The annual minimum fermentation temperature was 15.2℃ which could ensure the biogas being produced all year long. The cumulative biogas production per unit digester was about 268m3. Through the comparison with the field measured data, it was showed that the mathematical model could effectively predict the hourly temperature inside the solar greenhouse and the hourly manure temperature in the digester, and could also be applied to forecast the thermal behavior and biogas pro- duction for other areas.
出处
《中国沼气》
北大核心
2016年第6期86-90,共5页
China Biogas
基金
"十二五"国家科技支撑计划课题(2011BAJ08B09)
