P32-01 超小形ガスタービン発電機の研究プロジェクト

概要

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This paper summarizes the recent activities in our project to develop the micromachined gas turbine generators for portable power sources. Parallel studies on 3- and 2.5-dimensional engines are underway. The 3-dimensional engine pursues the possibly highest performance by employing the aerodynamically, thermally and mechanically optimum structures to realize self-operation. We first make a 3-dimensional micro-turbo charger operating at room temperature to demonstrate the feasibility of required adiabatic compressor efficiency and rotational speed without the influence of heat flow. THe 3-dimensional engine, however, needs the one-by-one manufacturing and assembly of each component with high accuracy, which are not adaptable to future mass-production. Contrarily, the 2.5-dimensional engine is the most disirable goal for future mass-production using semiconductor micromachining, however, it holds many highlychallenging hurdles. Our trials on the 2.5-dimensional engine include study on silicon micro-air turbines, computational fluid dynamics (CFD) simulation, ceramic micromachining and study on micro-combustors.
社団法人日本機械学会の論文
2002-06-14