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An input-output model for energy accounting and analysis of industrial production processes: a case study of an integrated steel plant 被引量:1
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作者 Xiao-jun Liu Sheng-ming Liao +1 位作者 Zheng-hua Rao Gang Liu 《Journal of Iron and Steel Research International》 SCIE EI CAS CSCD 2018年第5期524-538,共15页
To promote sustainability, it has become increasingly vital to properly account material and energy flows in industrial production processes. Therefore, a generic process-level input-output (IO) model was developed ... To promote sustainability, it has become increasingly vital to properly account material and energy flows in industrial production processes. Therefore, a generic process-level input-output (IO) model was developed to provide an integrated energy (material) accounting and analysis approach for industrial production processes. By extending the existing processlevel IO models, the production, usage, export and loss of by-products were explicitly considered in the proposed IO model. Moreover, the by-products allocation procedures were incorporated into the proposed IO model to reflect individual contributions of products to energy consumption. Finally, the proposed model enabled calculating embodied energy of main products and total energy consumption under hierarchical accounting scope. Plant managers, energy management consultants, governmental officials and academic researchers could use this input-output model to account material and energy flows, thus calculating energy consumption indicators of a production process with their specific system boundary requirements. The accounting results could be further used for energy labeling, identifying bottlenecks of production activities, evaluating industrial symbiosis effects, improving materials and energy utilization efficiency, etc. The model could also be used as a planning tool to determine the effect that a particular change of technology and supply chains may have on the industrial production processes. The proposed model was tested and applied in a real integrated steel mill, which also provided the reference results for related researches. At last, some concepts, computational issues and limi- tations of the proposed model were discussed. 展开更多
关键词 Input-output model · Energy consumption · Energy accounting · Embodied energy · Industrial production process · Integrated steelmaking process
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