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ENCIT 2020
18th Brazilian Congress of Thermal Sciences and Engineering
GREENHOUSE GAS AND ENERGY PAYBACK TIMES OF A WIND TURBINE INSTALLED IN THE BRAZILIAN NORTHEAST
Submission Author:
Luiz Fonseca , PB
Co-Authors:
Luiz Fonseca, monica carvalho
Presenter: Luiz Fonseca
doi://10.26678/ABCM.ENCIT2020.CIT20-0150
Abstract
This study applies the Life Cycle Assessment methodology to a wind turbine and verifies its environmental and energy payback times. The environmental analysis was developed with the SimaPro software, using the Ecoinvent database and the IPCC 2013 GWP 100y environmental impact assessment method. The Life Cycle Assessment considered the extraction of raw material, production of parts and pieces, transportation, assembly, use and decommissioning. Besides the material composition of the wind turbine, meteorological data was also utilized to calculate the production of energy at Patos (semi-arid region of the state of Paraíba, Northeast Brazil). The results of the environmental analysis and data on energy production were utilized to verify how long does the system have to operate to recover the energy—and associated greenhouse gas emissions - that went into making the system. It is demonstrated that the wind turbine has the potential to mitigate greenhouse gas emissions during its lifetime and that the energy and greenhouse gas payback times are under one year. The results obtained herein highlight the importance of combining Life Cycle Assessments with energy production calculations.
Keywords
wind energy, Environmental impacts, greenhouse gases, carbon footprint, Life Cycle Assessment
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