Carbon footprint evaluation and low carbon design of China's photovoltaic products based on LCA methodology
The power sector,as the largest source of carbon emissions in China,faces significant challenges in emission reduction.Since photovoltaic(PV)technology play a crucial role in facilitating China's power sector to achieve net-zero transition,it is of great significance to conduct a comprehensive and intuitive life cycle assessment(LCA)of the greenhouse gas emissions of photovoltaic products.Introduces the standards,development process,assessment framework and methods of carbon footprint assessment for PV products.The advantages,disadvantages,and applicability of input-output analysis,life cycle assessment,and IPCC inventory analysis methods were compared.Carefully examines the application procedure and computational techniques employed in utilizing the LCA method for assessing the carbon footprint of PV products in China.The research based on the main study boundaries of raw material supply,energy input and output,transport,construction,installation,commissioning,operation and maintenance,the system boundary was delineated into upstream,core,and downstream stages,elucidating scenarios for including downstream processes in carbon assessment.The product types,structure of the energy use,process workflows,emission reduction technologies were carefully reviewed.This was followed by outlining the challenges in carbon footprint assessment for PV products,including methodologies,costs,technologies,and policies.In addition,a comparative analysis was conducted among PV and other renewable energy sources in terms of technological,economic,and environmental benefits.Find that the resource demands in the upstream PV module preparation process are diverse,with carbon emissions accounting for over 80％of the total.Finally,concludes future directions and recommendations for green transformation and development of the PV industry through low-carbon design.It emphasized that the development and utilization of clean energy,typified by PV,were indispensable to fulfill carbon neutrality and sustainable development goals globally.
国家科技期刊平台
NSTL
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