Resource: Carbon Impact Studies: Gearboxes
This 2009 report compares the carbon footprint of remanufacturing an automotive gearbox compared to making a new one.
Tuesday, 21st July 2009
ScenarioThe analysis was based on the real life data collected from a remanufacturer based in the UK. For this work we assume each used gearbox is remanufactured once. There will still be more benefits at the useful end of a remanufactured gearbox by way of reusing some of the parts but this was not considered here. The inventory included materials, energy, transport logistics, remanufacturing ratio for each part, and disposal and waste scenarios.
FindingsCarbon impact of remanufacturing gearboxes is about one third lower than that of new ones due mainly to saving of materials with high embodied energy (Aluminium alloys) and operation. Carbon impact of a remanufactured gearbox 284.5 kgCO2eq compared to 432.5 kgCO2eq of a new gearbox. Based on the total value of light vehicle transmission market, remanufacturing gearboxes saves 13,220 tCO2eq over new gearboxes. Based on the figures for the number of units remanufactured in 2008, the remanufacturer that supplied the data for this study saves up to 335 tCO2eq in a year for the 6-speed automatic gearboxes alone.
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