The first carbon footprint report for pure electric new energy locomotives released

Recently, CRRC China released seven series of new energy locomotives and released the world's first carbon footprint report for pure electric new energy locomotives. The development of a series of new energy locomotives can effectively reduce carbon dioxide and pollutant emissions, and is a concrete practice of the green and low-carbon transformation of my country's rail transit equipment.

On June 28, CRRC Corporation released seven series of new energy locomotives, including three power configurations: "internal combustion engine + power battery", power battery, and hydrogen fuel cell. The series of new energy locomotives can achieve low emissions, low noise, and high efficiency operation, effectively solving the problems of high fuel consumption, high emissions, and high noise existing in old diesel locomotives. At the same time, CRRC China released the world's first carbon footprint report on pure electric new energy locomotives. The report was verified by an international authoritative certification body and issued an ISO14067 product carbon footprint certificate.

"The development of a series of new energy locomotives is a concrete practice of CRRC's commitment to promoting the green and low-carbon transformation of my country's rail transit equipment." Ma Yunshuang, general manager of CRRC China, said.

Accurately measure the carbon dioxide emission trajectory throughout the product life cycle

"Our carbon footprint report accurately measures the carbon dioxide emission trajectory of new energy locomotive products during the entire life cycle from iron ore to recycling and disposal after completing the 30-year service period through real-life combined modeling." said Wang Feifei, deputy head of the green and low-carbon group of the China CRRC Transformation Office.

In the production and manufacturing process, accurate calculations have been made from every screw and nut on the locomotive to the production and manufacturing of car bodies, wheelsets, bogie and other parts, the acquisition of raw materials and materials, and the carbon emissions during the final assembly process.

The reporter learned that the accounting process involves more than 97,000 pieces of data, all from real-life data from CRRC Dalian, Ziyang and Qishuyan, which truly reflects the production and manufacturing situation of products; for emission factors that are difficult to obtain directly, all come from background data in international authoritative databases.

In the end, the certification certificate shows that the carbon footprint of the 1000-kilowatt "internal combustion engine + power battery" locomotive is 7.40 kilograms of carbon dioxide equivalent per kilometer; the carbon footprint of the 1000-kilowatt power battery locomotive is 7.92 kilograms of carbon dioxide equivalent per kilometer.

Observing the carbon emissions generated by locomotives at each stage, we can find that the product service stage has the greatest impact on the carbon footprint of the product throughout its life cycle.

Taking a 30-year operating cycle, a load of 1000 tons, 40% of the standard operating speed, and electrical energy consumption from green electricity as the accounting premise, the carbon footprint of each pure electric new energy locomotive during its service period is reduced by 94.2%, and carbon emissions can be reduced by 4076 tons; The carbon footprint of each "internal combustion engine + power battery" new energy locomotive during its service period is reduced by 61.7%, which can reduce carbon emissions by 2735 tons.

Key components adopt lightweight design, and green electricity is used in the production process

The reporter learned that the key components of the series of new energy locomotives have adopted a lightweight design, the traction motor has reduced the weight by 22.5%, the weight reduction effect of the bogie has reached 6.7%, the steel structural parts of the cab have been reduced by 40%, and the underframe parts have been reduced by 70%, effectively reducing carbon emissions from raw material acquisition, parts production and transportation.

For another example, through simplified design, a series of new energy locomotives unify the parts models and specifications of different regions and different enterprises, optimize assembly and maintenance and disassembly processes, shorten the logistics distance during the maintenance stage, and reduce carbon emissions in the raw material acquisition stage by 5%.

"In addition, we maximize the use of green electricity in the production and manufacturing process, so that green electricity accounts for more than 20% of power consumption, and achieve a reduction in the carbon footprint of the manufacturing and maintenance stages by approximately 52% compared with the replaced models. In the future, with the further expansion of photovoltaic power generation by manufacturing companies, this proportion will continue to increase." Wang Feifei said.

In addition to reducing carbon dioxide emissions, the series of new energy locomotives have also performed well in reducing pollutant emissions.

Data shows that "internal combustion engine + power battery" locomotives can achieve nitrogen oxide emission reductions by 45%, hydrocarbons emission reductions by 73%, and carbon monoxide emission reductions by 83%. Based on a 45% reduction in pollutant emissions, one locomotive can emit 4 tons of harmful substances and 374 tons of carbon emissions every year.

Large-scale and diversified demand for new energy products drives the development of related industries

According to reports, by adopting hybrid optimal control technology, the "internal combustion engine + power battery" locomotive can ensure that the diesel engine always operates at the best economic speed. When filling up the same tank of oil and hauling 3000 tons of cargo on a straight road, the cruising range exceeds 1100 kilometers, 1.7 times that of diesel locomotives, and the fuel saving rate exceeds 45%.

The power battery locomotive is compatible with multiple charging piles. The charging power exceeds 870 kilowatts and the shortest charging time is less than 40 minutes. It can operate in a wide temperature range from minus 40 degrees Celsius to 40 degrees above zero. Hydrogen fuel cell locomotives only take 10 to 15 minutes to fuel refueling, which can effectively ensure the locomotive's operating capacity and cruising range, and the energy utilization efficiency is increased by more than 80% compared with traditional diesel locomotives.

"Serialization of new energy locomotives will bring large-scale and diversified demand for new energy products and drive the development of upstream basic materials, key components and other related industries." Tian Jun, chief engineer and director of the Equipment Supervision and Management Department of the State Railway Administration, said.