Peter2 wrote:What does one use to provide the heat to generate the steam?
Anything that can heat water to boiling or higher. The point is that Safehold can avoid a dependence on
fossil oil by staying with coal or fire vine oil, or geothermal or whatever suits the application without burning up fossil oil instead of reserving it for plastics, medication, or other recyclable applications.
Peter2 wrote:So far as I can see, there is still no reasonably compact alternative to fossil fuels for doing that, and the point has already been made that it will have problems providing instant power.
Steam only has a problem with providing instant power from a cold start. Once the proscriptions are lifted and catenary wires can be strung, trams and trains have all the instant electrical power they might need.
Peter2 wrote:The gazogene engine, relying on a process of using wood chips to generate a combustible gas which is then used in an internal combustion engine, is a far better bet.
Gazogene systems were used because they already had the internal combustion engines and couldn't get gasoline. If you don't have an ICE already, gazogene is a really bad choice for an energy source. You get more energy turned into usable power by burning the same amount of wood under a boiler to make steam.
PS: Trivial fact from the internet: The very first internal combustion engine, invented in 1806 ran on Hydrogen.
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Answers! I got lots of answers!
(Now if I could just find the right questions.)