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Analysis of Exergy Utilization in the Chinese Transportation Sector

This paper attempts to apply Reistad's approach to analyze exergy utilization in Chinese transportation sector that includes five sub-sectors: highways, railways, waterways, airways, and pipeline transport. Unlike previous studies based on historical data, this paper uses the actual data for 2006 and projected data for 2030 under five scenarios to analyze exergy consumption. We find that (1) in 2030, the total exergy consumption will be 17,883–26,698 PJ, which may increase 2.26–3.78 times compared with that in 2006. (2) The effect of advanced technology is much greater than that of the choice of transport mode. (3) Highways will always be the dominant transport mode. In 2030, the percentage of exergy of oil fuels in total exergy consumption of the whole sector will account for more than 97%. (4) The weighted mean energy and exergy efficiencies will show a deteriorating trend over years, i.e., a decreasing tendency with time, except for Scenario 2.