If the mass flow rates / heat capacities are the same on both sides, what would be the overall effectiveness of two regenerators in series with different effectivenesses?
Bret Cahill
Someone recently complained about the high cost of the materials used in gas turbines. Until recently this was true on both a unit power basis as well as a unit weight basis.
Now with steel trading at $400/ton and comparing the cost of Ni-Cr alloy in a large turbofan to the steel in a vehicle...
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This concerns the mechanical energy required to get a certain heat duty and/or effectiveness while factors such as heat exchanger volume are set.
One strategy might be to use long thin tubes and have a lot of surface area and the only work required will be moving the fluids through the tubes...
I can usually find my "new" ideas in minutes and they are often decades old. This might be an exception:
Eliminate turbo lag and shaft driven superchargers with something much more useful to most commuters: a two to 5 second burst of air from a pressure vessel that would help scoot any under...
