Mistakenly posted in another thread (about 6th wave
intersectional post modern feminist marxist research methods)...
Let's look at the efficiency of using that heat....
- Steam engines can hit 40%. Treat this as an unattainable
maximum, given that the compressed air temp air will be
below the operating temps of the most efficient engines.
- At lower temps, stirling cycle would be best. 40% could
be achievable. But again, this is an unattainable maximum,
because it applies only to the stored energy, which will
endure losses in the storage process.
I imagine that 25% efficiency could be possible.