秸秆发电系统能值分析  

Energy Evaluation of Straw-based Power Generation System

作　　者：刘华财[1,2] 阴秀丽[1] 吴创之[1] 

机构地区：[1]中国科学院可再生能源与天然气水合物重点实验室,广州510640 [2]中国科学院研究生院,北京100049

出　　处：《农业机械学报》2011年第11期93-98,123,共7页Transactions of the Chinese Society for Agricultural Machinery

基　　金：国家高技术研究发展计划(863计划)资助项目(2009AA05Z434);中国科学院创新方向项目(KGCX2-YW-329)

摘　　要：利用能值分析方法对1 MW气化发电、5.5 MW气化发电和25 MW直燃发电3种典型生物质发电系统的可持续性进行了评价。在能值成本和能值收益概念基础上,引入了能值收益率和能值净收益两个指标。结果表明:利用单位能量的秸秆,5.5 MW气化发电系统能回收的能值最多且效率最高;1 MW气化发电系统的能值成本最低,但相应的能值收益也最小;和1 MW气化发电相比,25 MW直燃发电系统能值收益率较低而能值净收益较高。Energy analysis was applied to evaluate three typical straw-based power generation systems： 1MW gasification and power generation system,5.5MW gasification and power generation system,and 25MW combustion and power generation system.Based on the concepts of energy costs and energy benefits,two indicators were employed： environmental yield ratio（EYR） and net energy.The results show that the 5.5MW system is the most efficient one in recovering energy from straw（the highest EYR） and is capable of saving the greatest quantity of energy per MJ of straw used（the highest net energy）;the 1MW system is the best one in terms of energy costs,but the worst in terms of energy benefits.Compared with the 1MW system,the 25MW system has a lower EYR but higher net energy.

关 键 词：秸秆发电 能值 可持续性 

分 类 号：TK6[动力工程及工程热物理—生物能]