This is a nice paper on the different fuel cycles of hydrogen ammonia and methyl.
Roundtrip efficiencies for hydrogen and ammonia are both at about 30% plus. Don't know how high it could theoretically go.
This is a nice paper on the different fuel cycles of hydrogen ammonia and methyl.
Roundtrip efficiencies for hydrogen and ammonia are both at about 30% plus. Don't know how high it could theoretically go.