LIFE CYCLE ANALYSIS OF PHOTOVOLTAIC BASED ON DIAMOND WIRE SAW PROCESS

Li Xingsheng; Hu Xiangran; Zheng Songsheng; Li Po; Wang Zhaolin

doi:10.19912/j.0254-0096.tynxb.2021-0082

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Acta Energiae Solaris Sinica ›› 2022, Vol. 43 ›› Issue (3) : 147-151. DOI: 10.19912/j.0254-0096.tynxb.2021-0082

LIFE CYCLE ANALYSIS OF PHOTOVOLTAIC BASED ON DIAMOND WIRE SAW PROCESS

Li Xingsheng¹, Hu Xiangran¹, Zheng Songsheng¹, Li Po², Wang Zhaolin¹

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Abstract

Diamond wire sawing （DWS） technology has become the mainstream technology in silicon wafer production in today’s photovoltaic industry. In this paper, the life cycle analysis method is adopted to study the energy consumption and greenhouse gas （GHG） emission reduction with a 1 kW polysilicon cell photovoltaic power generation system model while diamond wire cutting technology replacing the original mortar cutting technology. The results show that the life cycle GHG emissions of photovoltaic systems using the diamond cutting process are 1358.53 kg/kW. Compared with the mortar cutting process, the GHG emission reduction is 290.83 kg/kW, which is equivalent to 17.6% of the total GHG emissions of the mortar cutting process, reducing power consumption and resource consumption significantly. Taking the annual solar hours as 1800 h/year, the full life cycle carbon recovery period of photovoltaic systems based on diamond cutting technology can be shortened to 1.62 years.

Key words

PV / life cycle analysis / polysilicon / solar cells / diamond wire saw / carbon emission

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Li Xingsheng, Hu Xiangran, Zheng Songsheng, Li Po, Wang Zhaolin. LIFE CYCLE ANALYSIS OF PHOTOVOLTAIC BASED ON DIAMOND WIRE SAW PROCESS[J]. Acta Energiae Solaris Sinica. 2022, 43(3): 147-151 https://doi.org/10.19912/j.0254-0096.tynxb.2021-0082

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