JOURNAL OF NATURAL RESOURCES >
Whole lifecycle assessment of carbon reduction benefits of polysilicon photovoltaics in Xinjiang
Received date: 2022-01-10
Revised date: 2022-04-13
Online published: 2023-03-08
Photovoltaic power, affected by a variety of natural and technical factors, is an important way to achieve deep carbon reduction in energy system. But its real carbon emission reduction still needs to be accurately reevaluated. Xinjiang, where the overall natural conditions are suitable for the development of photovoltaic power generation, but the vast spatial differentiation in local geographical features is also prominent, could be no doubt chosen as a study area to conduct this research. By ways of the life cycle assessment, LCA, the power generation model and carbon emission reduction model, this paper has calculated the carbon emission, power generation and carbon emission reduction in the whole life cycle of the 1 kW multi-crystalline silicon photovoltaic power under two degradation rates (DR) in Xinjiang, so as to provide a sound scientific basis for the further development of local photovoltaic industry in the region as well as research references to other regions alike. The research results show that: (1) Compared with thermal power, the carbon emission reduction of photovoltaic power in Xinjiang reaches 863 g CO2-eq (DR=1%) or 738 g CO2-eq (DR=3%) per kilowatt-hour, accounting for 93% or 79% carbon emission of thermal power separately, which is of great significance to the decarbonization of energy system in the region. (2) The spatial differentiation of carbon emission reduction in Xinjiang is prominent, showing a spatial trend of decreasing from east to west. Clustering analysis shows that photovoltaic layout in the study area should focus on the first- and second-level areas in potential grades, such as Hami, Turpan and Bayangol. (3) The future development of photovoltaic power in Xinjiang should concentrate on the perspective of the whole lifecycle carbon reduction, improve the middle to downstream industrial chain of photovoltaic production to meet the goal of realization of full local production, and fully consider the influencing factors in the construction and operation processes, such as solar radiation, degradation rate, and reasonable layout, as well as accelerate the development of end-of-life treatment and recovery technology.
Key words: carbon emission; power generation; carbon emission reduction; Xinjiang
DU Wen-jie , JIANG Yuan , GUAN Meng-xi , LIU Xiang-lan , KANG Mu-yi . Whole lifecycle assessment of carbon reduction benefits of polysilicon photovoltaics in Xinjiang[J]. JOURNAL OF NATURAL RESOURCES, 2023 , 38(3) : 694 -706 . DOI: 10.31497/zrzyxb.20230309
表1 数据及来源说明Table 1 Illustration to data sets and their sources |
数据 | 来源 | 时间段/年 |
---|---|---|
太阳辐射量/(kJ/m2/day) | WorldClim (https://www.worldclim.org/data/worldclim21.html) | 1970―2000 |
月均温度/°C | 同上 | 1970―2000 |
新疆地市行政边界 | 2015年中国地市行政边界数据(资源环境科学与数据中心) | 2015 |
GDP | 2020年《新疆统计年鉴》 《新疆维吾尔自治区2020年国民经济和社会发展统计公报》 | 2015―2019 2020 |
年发电量 | 2020年《新疆统计年鉴》 新疆维吾尔自治区发展和改革委员会公开数据 | 2015―2019 2020 |
表2 新疆各地市1 kW多晶硅光伏碳排放、发电量及减碳效益统计Table 2 Accounting for CE, LG and CER of 1 kW multi-Si PV system of cities in Xinjiang |
地区 | 碳排放/kg CO2-eq | 发电量/(kW·h) | 减碳效益/[g CO2-eq/(kW·h)] | 地区 | 碳排放/kg CO2-eq | 发电量/(kW·h) | 减碳效益/[g CO2-eq/(kW·h)] | ||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|
DR=1% | DR=1% | DR=1% | DR=3% | DR=1% | DR=1% | DR=1% | DR=3% | ||||||
阿克苏地区 | 1742 | 24721 | 8634 | 860 | 729 | 阿拉尔市 | 1735 | 24860 | 8683 | 861 | 731 | ||
阿勒泰地区 | 1651 | 23565 | 8231 | 860 | 730 | 巴音郭楞蒙古自治州 | 1600 | 25925 | 9055 | 869 | 754 | ||
北屯市 | 1637 | 23474 | 8199 | 861 | 731 | 博尔塔拉蒙古自治州 | 1644 | 23896 | 8346 | 862 | 734 | ||
昌吉回族自治州 | 1522 | 24199 | 8452 | 868 | 750 | 哈密地区 | 1517 | 25980 | 9074 | 872 | 763 | ||
和田地区 | 1786 | 25490 | 8903 | 860 | 730 | 喀什地区 | 1851 | 24849 | 8679 | 856 | 717 | ||
克拉玛依市 | 1592 | 23848 | 8330 | 864 | 739 | 克孜勒苏柯尔克孜自治州 | 1841 | 24604 | 8593 | 856 | 716 | ||
石河子市 | 1549 | 23834 | 8325 | 865 | 744 | 塔城地区 | 1651 | 23734 | 8290 | 861 | 731 | ||
吐鲁番地区 | 1514 | 25463 | 8894 | 871 | 760 | 图木舒克市 | 1790 | 24726 | 8636 | 858 | 723 | ||
五家渠市 | 1527 | 23567 | 8231 | 866 | 745 | 乌鲁木齐市 | 1514 | 23870 | 8337 | 867 | 749 | ||
伊犁哈萨克自治州 | 1686 | 24259 | 8473 | 861 | 731 |
图3 新疆各地市1 kW多晶硅光伏碳排放、发电量及减碳效益空间分布注:本图基于自然资源部标准地图服务系统下载的标准地图制作,底图无修改;1为阿克苏地区,2为阿拉尔市,3为阿勒泰地区,4为巴音郭楞蒙古自治州,5为北屯市,6为博尔塔拉蒙古自治州,7为昌吉回族自治州,8为哈密地区,9为和田地区,10额喀什地区,11为克拉玛依市,12为克孜勒苏柯尔克孜自治州,13为石河子市,14为塔城地区,15为吐鲁番地区,16为图木舒克市,17为五家渠市,18为乌鲁木齐市,19为伊犁哈萨克自治州,下同。 Fig. 3 Spatial distribution of CE, LG and CER of 1 kW multi-Si PV system of cities in Xinjiang |
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