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Based on the theory of system energy-saving,a multilevel input-output computational model of the iron and steel enterprise was established.And one example was calculated using this model to analyze the product energy value,the process of energy consumption and energy consumption per ton of steel of an iron and steel enterprise.The influences of factory layout,steel ratio and production structure are calculated and analyzed.The calculation example indicates that reasonable factory layout is helpful to reduce its transportation energy consumption,decrease loss of heat,improve product rate and reduce environmental contamination; ore to steel ratio and iron to steel ratio decrease at the same degree; the influence of ore to steel ratio on energy intensity per ton is less than that of iron to steel ratio.The lord process product structure has a certain effect on comprehensive energy consumption per ton of steel.
Based on the theory of system energy-saving, a multilevel input-output computational model of the iron and steel enterprise was established. And one example was calculated using this model to analyze the product energy value, the process of energy consumption and energy consumption per ton of steel of an iron and steel enterprise. These influences of factory layout, steel ratio and production structure are calculated and analyzed. calculation example indicates that reasonable factory layout is helpful to reduce its transportation energy consumption, decrease loss of heat, improve product rate and reduce environmental contamination; ore to steel ratio and iron to steel ratio decrease at the same degree; the influence of ore to steel ratio on energy intensity per ton is less than that of iron to steel ratio. lord process product structure has a certain effect on comprehensive energy consumption per ton of steel.