Abstract
A performance analysis andoptimization of a open-cycle regenerator gas-turbine powerplant
is performedin this paper. The analytical formulae about the relation between power
output and cycle overall pressure-ratio are derived taking into account the eight pressure-drop
losses in the intake, compression, regeneration, combustion, expansion anddischarge
processes andflow process in the piping, the heat-transfer loss to the ambient environment,
the irreversible compression andexpansion losses in the compressor andthe turbine, andthe
irreversible combustion loss in the combustion chamber. The power output is optimizedby
adjusting the mass-flow rate and the distribution of pressure losses along the flow path. Also,
it is shown that the power output has a maximum with respect to the fuel-flow rate or any
of the overall pressure-drops and the maximized power output has an additional maximum
with respect to the overall pressure-ratio. The numerical example shows the effects of design
parameters on the power output andheat-conversion efficiency