Raising boiler pressure from 235 to 265 psi is an increase of about thirteen percent. The estimate treats that as a roughly thirteen-percent power boost for the proposed machinery. More efficient turbines would make better use of the steam supply. Parsons' efficiency advantage comes from blade design. The power percentage is a simplifying assumption in the estimate.
Notable Point · 39:56-40:49
Higher steam pressure and turbine blade efficiency
The machinery estimate treats a rise from 235 to 265 psi as a roughly thirteen-percent power boost, with turbine blade design offering another efficiency gain.