Quote:
Originally Posted by RWebb
In 10, maybe even 5 years, it could be a go.
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Nobody accused you of being ridiculously optimistic, lately?
cel, checking vapor pressure chart for propane, there is no way you're going to condense the propane. Propane boils above -44 degrees F. Instead of a piston engine, you could use an air-driven pump (sort of like a air grinder or polisher, except much larger). At ground temp of 60 degrees, propane would be 90 psi. Your solar panels would heat to at least 110 degrees, giving you over 200 psi. Use that pressure differential to move the air-pump.
I still think you're looney, but you are thinking outside the box.