| 太阳助秸秆沼气的生命周期能耗及碳排放分析 |
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| 引用本文： | 苏醒,李航,张旭,宋波.太阳助秸秆沼气的生命周期能耗及碳排放分析[J].同济大学学报(自然科学版),2017,45(8):1204-1208. |
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| 作者姓名： | 苏醒 李航 张旭 宋波 |
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| 作者单位： | 同济大学机械与能源工程学院，上海，210804,同济大学机械与能源工程学院，上海，210804,同济大学机械与能源工程学院，上海，210804,中国建筑科学研究院，北京，100013 |
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| 基金项目： | 国家“十二五”科技支撑计划(2015BAL02B03) |
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| 摘 要： | 对徐州某太阳能辅助加热的秸秆沼气系统进行了深入调研和测试,采用生命周期评价方法分析了涵盖基础设施建设、系统运行维护、秸秆运输、沼气使用以及沼液沼渣利用等各个阶段的化石能源消耗及碳排放清单.结果表明太阳能沼气系统生命周期化石能源消耗为0.173 MJ·MJ~(-1),碳排放为0.121kgCO_2eq·MJ~(-1)(二氧化碳当量).与天然气比较,秸秆沼气系统的单位热值化石能源消耗仅为天然气的15.6%,单位热值碳排放比天然气系统多55.0%.与秸秆直接露天燃烧相比,秸秆沼气系统的单位秸秆质量生命周期碳排放比秸秆直接露天燃烧低59.7%.
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| 关 键 词： | 生命周期评价 清单分析 秸秆沼气 太阳能 |
| 收稿时间： | 2016/12/2 0:00:00 |
| 修稿时间： | 2017/6/6 0:00:00 |
Life Cycle Fossil Energy Consumption and Carbon Emissions of a Solar assisted Straw Biogas System |
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| SU Xing,LI Hang,ZHANG Xu and SONG Bo.Life Cycle Fossil Energy Consumption and Carbon Emissions of a Solar assisted Straw Biogas System[J].Journal of Tongji University(Natural Science),2017,45(8):1204-1208. |
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| Authors: | SU Xing LI Hang ZHANG Xu and SONG Bo |
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| Institution: | College of Mechanical Engineering, Tongji University, Shanghai, 201804, China,College of Mechanical Engineering, Tongji University, Shanghai, 201804, China,College of Mechanical Engineering, Tongji University, Shanghai, 201804, China and China Academy of Building Research, Beijing, 100013, China |
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| Abstract: | A life cycle inventory analysis model for all life stages of solar-assisted straw biogas system is developed, including raw materials acquisition, construction, straw transportation, operation and maintenance, biogas using and eventually waste management. Based on on-site investigation and measurement of a solar-assisted straw biogas project, the life cycle fossil energy consumption and carbon emissions are calculated. The results show that the fossil energy consumption of the solar assisted biogas system is 0.173MJ/MJ, and the carbon emission is 0.121kg CO2eq/MJ. When compared to natural gas, the fossil energy consumption of straw biogas is only 15.6% of the natural gas, the carbon emissions is 55% higher than that of the natural gas. The life cycle carbon emissions of solar assisted biogas system is 59.7% lower than straw burning. |
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| Keywords: | life cycle assessment inventory analysis straw biogas solar energy |
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