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首页> 外文期刊>Environmental Science & Technology >How To Address Data Gaps in Life Cycle Inventories: A Case Study on Estimating CO_2 Emissions from Coal-Fired Electricity Plants on a Global Scale
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How To Address Data Gaps in Life Cycle Inventories: A Case Study on Estimating CO_2 Emissions from Coal-Fired Electricity Plants on a Global Scale

机译：如何解决生命周期清单中的数据空白：以全球规模估算燃煤电厂的CO_2排放量为例

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摘要

One of the major challenges in life cycle assessment (LCA) is the availability and quality of data used to develop models and to make appropriate recommendations. Approximations and assumptions are often made if appropriate data are not readily available. However, these proxies may introduce uncertainty into the results. A regression model framework may be employed to assess missing data in LCAs of products and processes. In mis study, we develop such a regression-based framework to estimate CO_2 emission factors associated with coal power plants in the absence of reported data. Our framework hypothesizes that emissions from coal power plants can be explained by plant-specific factors(predictors) that include steam pressure, total capacity, plant age, fuel type, and gross domestic product (GDP) per capita of the resident nations of those plants. Using reported emission data for 444 plants worldwide, plant level CO_2 emission factors were fitted to the selected predictors by a multiple linear regression model and a local linear regression model. The validated models were then applied to 764 coal power plants worldwide, for which no reported data were available. Cumulatively, available reported data and our predictions together account for 74% of the total world's coal-fired power generation capacity.
机译：生命周期评估（LCA）的主要挑战之一是用于开发模型和提出适当建议的数据的可用性和质量。如果无法获得适当的数据，通常会做出近似和假设。但是，这些代理可能会给结果带来不确定性。可以使用回归模型框架来评估产品和过程的LCA中缺少的数据。在错误的研究中，我们建立了这样一个基于回归的框架，以在没有报告数据的情况下估算与燃煤电厂相关的CO_2排放因子。我们的框架假设，燃煤电厂的排放可以用电厂特定的因素（预测因素）来解释，这些因素包括蒸汽压力，总容量，电厂使用年限，燃料类型和这些电厂所居住国家的人均国内生产总值（GDP） 。使用报告的全球444种植物的排放数据，通过多元线性回归模型和局部线性回归模型将植物水平的CO_2排放因子拟合到选定的预测因子。然后将经过验证的模型应用于全球764个燃煤电厂，但尚无报告数据。累积的可用报告数据和我们的预测合计占世界燃煤发电总容量的74％。

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  • 来源
    《Environmental Science & Technology》 |2014年第9期|5282-5289|共8页
  • 作者

    Zoran J. N. Steinmann; Aranya Venkatesh; Mara Hauck; Aafke M. Schipper; Ramkumar Karuppiah; Ian J. Laurenzi; Mark A. J. Huijbregts;

  • 作者单位

    Department of Environmental Science, Radboud University Nijmegen, Toemooiveld 1, 6525 ED Nijmegen, Netherlands;

    ExxonMobil Research and Engineering Company, 1545 Route 22 East, Annandale, New Jersey 08801-3059, United States;

    Department of Environmental Science, Radboud University Nijmegen, Toemooiveld 1, 6525 ED Nijmegen, Netherlands;

    Department of Environmental Science, Radboud University Nijmegen, Toemooiveld 1, 6525 ED Nijmegen, Netherlands;

    ExxonMobil Research and Engineering Company, 1545 Route 22 East, Annandale, New Jersey 08801-3059, United States;

    ExxonMobil Research and Engineering Company, 1545 Route 22 East, Annandale, New Jersey 08801-3059, United States;

    Department of Environmental Science, Radboud University Nijmegen, Toemooiveld 1, 6525 ED Nijmegen, Netherlands;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《生物学医学文摘》(MEDLINE);美国《化学文摘》(CA);
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