TY - JOUR KW - Uncertainty KW - China Energy Group KW - International energy studies group KW - Energy Analysis and Environmental Impacts Division KW - International Energy Department KW - Industrial energy efficiency KW - Cement industry KW - Co emissions AU - Jing Ke AU - Michael A McNeil AU - Lynn K Price AU - Nina Khanna AU - Nan Zhou AB -

In 2010, China’s cement output was 1.9 gigatonnes, which accounted for 56% of world cement production. Total carbon dioxide (CO2) emissions from Chinese cement production could therefore exceed 1.2 gigatonnes. The magnitude of emissions from this single industrial sector in one country underscores the need to understand the uncertainty of current estimates of cement emissions in China. This paper compares several methodologies for calculating CO2 emissions from cement production, including the three main components of emissions: direct emissions from the calcination process for clinker production, direct emissions from fossil fuel combustion and indirect emissions from electricity consumption. This paper examines in detail the differences between common methodologies for each emission component, and considers their effect on total emissions. We then evaluate the overall level of uncertainty implied by the differences among methodologies according to recommendations of the Joint Committee for Guides in Metrology. We find a relative uncertainty inChina’s cement-related emissions in the range of 10 to 18 percent. This result highlights the importance of understanding and refining methods of estimating emissions in this important industrial sector.

BT - Energy Policy C2 - LBNL-6329E DA - 06/2013 N2 -

In 2010, China’s cement output was 1.9 gigatonnes, which accounted for 56% of world cement production. Total carbon dioxide (CO2) emissions from Chinese cement production could therefore exceed 1.2 gigatonnes. The magnitude of emissions from this single industrial sector in one country underscores the need to understand the uncertainty of current estimates of cement emissions in China. This paper compares several methodologies for calculating CO2 emissions from cement production, including the three main components of emissions: direct emissions from the calcination process for clinker production, direct emissions from fossil fuel combustion and indirect emissions from electricity consumption. This paper examines in detail the differences between common methodologies for each emission component, and considers their effect on total emissions. We then evaluate the overall level of uncertainty implied by the differences among methodologies according to recommendations of the Joint Committee for Guides in Metrology. We find a relative uncertainty inChina’s cement-related emissions in the range of 10 to 18 percent. This result highlights the importance of understanding and refining methods of estimating emissions in this important industrial sector.

PB - Energy Policy PY - 2013 SP - 172 EP - 181 T2 - Energy Policy TI - Estimation of CO2 Emissions from China’s Cement Production: Methodologies and Uncertainties UR - https://isswprod.lbl.gov/library/view-docs/private/output/rpt82680.PDF VL - 57 ER -