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User Info Is Tesla On The Verge of Bankruptcy?; entered at 2017-11-21 17:09:22
Budget-racer
Posts: 15
Registered: 2016-03-14 Virginia
Here's a couple interesting quotes found in the ammonia article.

Quote:
However, it has a relatively low energy density per gallon about half of gasoline. The fuel mileage of ammonia is about half of gasolines mileage.

Snip

For example, ammonia is over 50% more energy dense per gallon than liquid hydrogen.

Snip

Ammonia does not burn readily or sustain combustion except under narrow fuel-to-air mixtures of 15-25% air.


Sounds like a worse version of ethanol, except for burning so clean. One take away I also got from the numbers was just how poor hydrogen is and how delusional the people, who think it's just around the corner, sound when talking about it.

The air/fuel ratio mentioned doesn't seem to match up for me though. Gas burns in the 12:1-14:1 air/fuel ratio before you really run into issues. They claim 50% energy density compared to gas but then the burn percentages they give come out around 4:1-6.5:1, either way you'd need a bigger tank to get meaningful range. I'm not saying don't look into it, but the history of fuels has always been one where the next phase was either cheaper, more energy dense or both and blew away the old stuff as a somewhat obvious choice. Interesting read anyway and at least they are making progress on energy density and ease of storage.
2017-11-21 17:09:22