On Tue, 25 May 2021 19:36:41 -0600, rbowman
wrote:

On 05/25/2021 06:24 PM, wrote:
If anyone believes in free energy, there's always hydrogen.

When we were making aircraft strobe lights some were soda glass and some
were quartz glass. Oxy-acetylene is fine for soda but you need the
higher temperature of an oxy-hydrogen flame to blow the quartz tubes. So
we made arrangements to have a tube trailer spotted on site. This
required a permit.

That's when I learned that in a free association test if you say
hydrogen the response is 'bomb'. Arguably the hydrogen was safer than
the tanks of LOX and acetylene but it has a bad rap.

Hydrogen is safer. It's very difficult to get hydrogen to explode.
Since it's much lighter than air, it dissipates quickly and won't
"pool".

That does highlight a problem with hydrogen. The tubes have to handle
around 3000 psi so you're not getting a whole lot of hydrogen in a
traditional steel tube rig. Composites help but it's still a problem.

Sure, it's a problem but the range should be equivalent to EVs and a
whole lot easier to fill.

Fix all that and it's still not a good fuel. Energy isn't free.