基于发动机与飞机的藻基航空燃料全生命周期分析

Consolidated discussion of life cycle assessment on algae based aviation fuel in combustion emissions on the basis of engine type and related aircraft was conducted by comparing with conventional jet fuel. Using the GREET (the greenhouse gases,regulated emissions,and energy use in transportation) model, passenger aircrafts were divided into six classes including single aisle, small twin aisle, large twin aisle, large quad, regional jet, and business jet. Each aircraft class was characterized by its average payload, potential flight range, and fuel consumption and emissions during landing, takeoff, taxiing, climbing referred to in the database of NASA-AAFEX, EASA, and CAAC. Also the emissions and energy input were discussed. The pump-to-wheel stage of algae based jet fuel in large twin aisle aircraft shows the least amount of greenhouse gases emission at 0.2351g/(kg•km) because larger aircraft has lower greenhouse gases emissions values than smaller aircraft due to higher engine efficiency and higher payload, however single aisle aircraft appears to be more sensitive to greenhouse gases emission in flight range than larger aircraft due to higher contribution of landing and takeoff.