A MICRO GAS TURBINE UNIT FOR ELECTRIC POWER GENERATION: DESIGN AND TESTING OF TURBINE AND COMPRESSOR

摘要

A miniature gas turbine is under development that generates electrical energy from fuel. In contrast to other microturbines, this system combines an axial turbine with a centrifugal compressor. The turbine, with a rotor diameter of 10 mm, is tested with hot compressed air up to 130,000 rpm and 330℃. It generates up to 50 W of mechanical power with an efficiency between 20 % and 24 %. Coupled to a small generator, it generates up to 36 W of electrical power. The 20 mm diameter compressor produces a pressure ratio of 1.20 at 150,000 rpm. Extrapolation predicts a pressure ratio of 1.63 at 250,000 rpm.