油当量(oil equivalent)=10000Kcal/liter
1千克油当量的热值,联合国按42.62兆焦(MJ)计算。
1公升(liter)柴油=0.9778油当量,
1公升车用汽油=0.8667油当量,
1吨油当量=1.4286吨标准煤