In principle, these resistances can be rendered
negligible by minimizing friction in the compressor andturbine, in the limit
ð Þ! c; t 1. The remaining six flow-resistances, however, are always present
because of the changes in the flow cross section at the compressor inlet, combustion
chamber inlet and outlet, regenerator cold-side inlet and outlet, turbine outlet, and
regenerator hot-side inlet and outlet. These resistances control the air-flow rate
m
: andthe net power output w
: [29–36]. For example, the pressure drop at the
compressor inlet is given by