QQ客服 官方微博 反馈留言

题名	木薯燃料乙醇全生命周期能效和经济性评价; The life cycle assessment of cassava-based fuel ethanol on energy efficiency and economy
作者	董丹丹
学位类别	硕士
答辩日期	2008-06-04
授予单位	中国科学院广州能源研究所
授予地点	广州能源研究所
导师	赵黛青
关键词	木薯燃料乙醇 能源效率 经济成本
其他题名	The life cycle assessment of cassava-based fuel ethanol on energy efficiency and economy
中文摘要	Biomass energy is the forth energy sources listed after coal, petroleum, and natural gas; it occupies 14% in the global consumed energy, in developing countries the number is 38%. Nowadays we need more and more energy and there isn’t so much fossil fuel like coal and petroleum as before, so biomass energy certainly will be one of the most important substitute energy. One of them is fuel ethanol, which can be used as traffic energy to displace gasohol. Fuel ethanol is friendlier to the environmental and it can improve motors’ performance. As the problem of energy safety comes out and swift rising of the oil price still goes on, the question weather cassava-based fuel ethanol has higher energy efficiency and weather it can be promoted should be answered. Here what has done is to solve that question. This paper applies the method of “life cycle assessment” which means from the cradle to the tomb. It is more comprehensive and more systemic, because it involves every factor of the products. As the oil price is rising up so high and energy issues comes out, I stressed energy efficiency and economy in a life cycle to assess he fuel ethanol. I choose a fuel ethanol plant producing 60 thousand ton every year in Guangdong province as my research object. I collect data from cassava planting, cassava transportation, to fuel transforming, including fertilizer category, planting technics, transporting distance due to output, production of ethanol, and so on. I use ‘net energy’, ‘energy efficiency of life cycle’, ‘obvious (latent) energy’ as index to assess energy efficiency, and for its economy, I use cost and profit as index. The life cycle of fuel ethanol is divided into cassava planting, cassava transportation and fuel transforming. Which fertilizer is used during planting period make a difference to the results; which production technics is applied during transforming period also influence the ending point; weather byproduct is gathered and distributed is an important factor to the last data. I got lots of interesting findings. In the assessment of energy efficiency part, I found that cassava planting occupied a big part in energy consuming, and improved planting technics can contribute a lot in both aspects; for transforming part, improved production technics can reduce 53% energy consuming, 41.45% cost; Using former technics, the energy efficiency is 0.582, and improved technics, no byproduct distribution, the number is 1.178, and improved technics plus byproduct distribution, the result of energy efficiency is 1.606. In the economy assessment part, it is found that improved technics reduce cost 50% and 41.45% separately between planting period and transforming period; for the total cost of life cycle, improved technics reduce 57.44% comparing to former situation. This paper provides full and accurate data and charts, which can be used for the peasants and producer to reduce energy consuming and improve their profit.
语种	中文
公开日期	2011-07-14 ; 2011-07-15
页码	87
内容类型	学位论文
源URL	[http://ir.giec.ac.cn/handle/344007/5806]
专题	中国科学院广州能源研究所
推荐引用方式 GB/T 7714	董丹丹. 木薯燃料乙醇全生命周期能效和经济性评价, The life cycle assessment of cassava-based fuel ethanol on energy efficiency and economy[D]. 广州能源研究所. 中国科学院广州能源研究所. 2008.

个性服务

查看访问统计

相关权益政策

暂无数据

收藏/分享

除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。