基于隐含能的行业完全能源效率评价模型研究

Evaluation model of sectors’ energy efficiency based on embodied energy

针对各行业能源利用效率的评价比较问题,考虑能源、经济、环境之间相互依存和相互制约的关系,基于隐含能思想提出了行业完全能源效率的概念,构建了评价指标体系,并将投入产出模型和数据包络分析方法相结合建立了评价模型,模型综合考虑了行业生产中能源消耗和碳排放对经济社会发展与环境演变的作用与价值.通过实证分析,对北京市42个行业的完全能源效率进行了评价,鉴别其在生产全流程能源消费中存在的问题,并给出了提高行业完全能源效率的潜力和改进途径.实证研究结果表明,北京市第一产业的完全能源效率很低,有些服务业的完全能源效率也较低,相反地有些工业行业的完全能源效率却比较高.这说明,为了实现节能减排目标,政府不应该简单地限制所有工业行业发展,也不应该盲目地鼓励发展所有服务业,而应该参考各行业的完全能源效率情况,在充分衡量其对经济社会发展的贡献之后做出综合决策.

Considering the interdependence and mutual restriction relationship between energy,economic and environment,this paper emphasized on energy efficiency of various sectors of social economy,and put forward the concept of total energy efficiency of sectors based on embodied energy.At the same time,an evaluation index system was discussed.Moreover,an evaluation model was established by combining the input-output model and data envelopment analysis method,which considered the comprehensive effect of energy consumption and carbon emissions on social economic development and environmental evolution.An empirical study of 42 sectors in Beijing was conducted,which identified the problems existing in the processes of energy consumption.Furthermore,the case study investigated how to improve the total energy efficiency of various sectors.Results demonstrated that instead of simply restricting on industrial development in order to achieve emission reduction targets or blindly encouraging the development of all service sectors,government should put forward a comprehensive decision-making after considering the total energy efficiency of various sectors and their contribution for economic and social development.