Manufacturing process carbon efficiency evaluation method

Abstract

The invention discloses a manufacturing process carbon efficiency evaluation method, which comprises the following steps of: defining a system boundary of a manufacturing process, analyzing a carbon emission source list, and classifying carbon emission sources of the carbon emission source list; then, according to material, energy consumption and process information in the manufacturing process, defining a corresponding carbon source generalized characteristic function, and respectively calculating material carbon emission, energy carbon emission, process carbon emission and total carbon emission in the manufacturing process; and finally, in combination with manufacturing process technological parameters (cutting parameters, workpiece materials, cutter parameters and technological conditions), defining manufacturing process working hour carbon efficiency and material removal carbon efficiency from two dimensions of machining working hours and material removal, and constructing calculation models corresponding to the two carbon efficiencies. On the basis, in order to meet the evaluation of the manufacturing process, a man-hour carbon efficiency quota and a material carbon removal efficiency quota are provided in combination with the actual situation of the manufacturing process. The method can provide a theoretical method for carbon efficiency evaluation in the manufacturing process, and lays a foundation support for subsequent carbon emission reduction of manufacturing enterprises.

Description

technical field [0001] The invention relates to the field of mechanical manufacturing and processing, in particular to a method for evaluating carbon efficiency in a manufacturing process. Background technique [0002] Manufacturing is an important part of industry and the cornerstone of the national economy. However, the current manufacturing industry has problems such as large energy consumption and serious emissions. According to the statistics of the International Energy Agency (IEA), the global final energy consumption in 2018 was 99.38 billion tons of oil equivalent, a year-on-year increase of 2.2%, of which the total industrial energy consumption accounted for about 1 / 3 of the global energy consumption, while the manufacturing industry consumed 99.38 billion tons of oil equivalent. Electricity accounts for approximately 28% of total energy consumption in industry. In addition, global energy-related CO2 emissions were 33.1 GtCO 2 , an increase of 1.5% year-on-year, ...

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Problems solved by technology

[0003] Therefore, in the context of global resource consumption and climate warming, experts and scholars at home and abroad have carried out a lot of research on carbon emissions in the manufacturing process. However, as an absolute amount, carbon emissions cannot truly reflect the pros and cons of processing technology. Products lack comparison

In addition, some scholars have proposed carbon efficiency evaluation indicators such as carbon emission utilization rate, production carbon efficiency, and economic carbon efficiency. The combination of process parameters, tool parameters, and processing status, and the fact that carbon emissions in the actual manufacturing process have the characteristics of multi-source heterogeneity and dynamic coupling, lead to very rough results obtained by using the above carbon efficiency indicators, and it is difficult to truly reflect the dynamic changes in carbon efficiency in the manufacturing process. , which has a weak guiding effect on the actual manufacturing process

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