Biosystems Engineering | VOL. 151
Energy demand and greenhouse gases emissions in the life cycle of tractors
Publication Date Nov 1, 2016
Energy supply and global warming are two of the main challenges of 21st century. To produce food to satisfy the increasing world population requires using more assets, more energy and emitting more greenhouse gases. Studies approaching embodied energy into and greenhouse gas emissions from agricultural machinery are rare. This study determined the energy demand and greenhouse gas emissions in the life cycle of tractors. Four tractors with distinct power levels were evaluated: 55 kW (T1); 90 kW (T2); 172 kW (T3) and 246 kW (T4). Life cycles considered were obtained from three different sources. Consumption of the direct inputs used in the assembly phase and of the input used in the maintenance phase were accounted. The results presented higher embodied energy and emissions in life cycle than are found in the literature. The following indicators were determined: T1, 122.7 MJ kg−1 and 5.7 kg [CO2eq.] kg−1; T2, 91.2 MJ kg−1 and 4.2 kg [CO2eq.] kg−1; T3, 85.2 MJ kg−1 and 3.8 kg [CO2eq.] kg−1; and T4, 71.9 MJ kg−1 and 3.3 kg [CO2eq.] kg−1. The hypothesis that more powerful tractors would require less energy and emit less greenhouse gas per functional unit (mass and power) was proved. Tractor (T4) has 313.2% more mass than (T1), but it required 70.6% less energy and 72.7% less GHG per unit mass, or 84.7% less energy and 87.7% less GHG per unit engine power than T1. For further use in modelling, equations were provided to determine energy demand and emission associated with either engine power or tractor mass.
Emissions In Life Cycle Unit Mass Greenhouse Gas Emissions Determine Energy Demand Tractor Mass Powerful Tractors Greenhouse Gas Assembly Phase Life Cycle Agricultural Machinery
AI-powered Research feed
Introducing Weekly Round-ups!Beta
Round-ups are the summaries of handpicked papers around trending topics published every week. These would enable you to scan through a collection of papers and decide if the paper is relevant to you before actually investing time into reading it.
Climate change Research Articles published between Sep 19, 2022 to Sep 25, 2022
Sep 26, 2022
Articles Included: 5
Disaster Prevention and Management ISSN: 0965-3562 Article publication date: 20 September 2022 This paper applies the theory of cascading, interconnec...Read More
Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on “as is” basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The Copyright Law.