GRA wrote:garygid wrote:For NG or H2, no matter liquid or gas, the production and distribution chain still appears to be energy use intensive, and likely releases a lot of greenhouse gas to the atmosphere. Solar panels to generate electricity ... seems like a better process to me, and distribution is often already in place. In my Garage, I think H2 and the gas water heater would be a ... bad mix. Even at only 1% per day boil off, it seems like too big of a risk in many garages, underground parking, and in typical service facilities.
Somewhere over in the H2 thread, I provided a link to a study of whether or not H2 could build up to a flammable concentration (4%) in a typical garage given a leak. Even sealing it to a much greater extent than would be the case with a real-world garage (or house FTM), achieving such a concentration was a practical impossibility. Service facilities are even more open. Underground garages may be another matter, but I imagine it all depends on how they're ventilated. Remember, gaseous H2, being such a tiny molecule and lighter than air, will rise and diffuse through just about everything (which is why pure H2 pipelines are so expensive, and they prefer to mix it in low concentrations in NG pipelines). It's not going to pool on the floor.
For sure if LNPG has a venting problem then H2 will also have broblems.
By the way, I saw a red Toyota Muiri in the McDonalds drive through today. From the side it looks OK. IF they could just moderate the UGLY front end. I can see why sales are so slow. People will not buy an ugly car.