alt.energy.renewable

"Anthony Matonak" wrote in message
news:47dc03a8$0$1110$4c368faf@roadrunner.com...
>
> I would suppose that they either use a regulator to deliver lower
> (say 50 atmospheres) pressure to the engine at all times or they
> use a modulated valve that delivers variable amounts of tank pressure
> air to the engine.

Both methods involve expanding the air without extracting useful work from it
in the process, and both methods will decrease the temperature of the air,
unless space-robbing heat exchangers are provided. In other words, both methods
introduce significant losses to a system that already must have large losses.

Vaughn