Microturbines in dispersed cogeneration - vibroacoustic threats

• Autorzy: Kiciński J.
• Konferencja: XIV International Conference Noise Control'07 (3-6.06.2007, Elbląg, Poland)
• Języki publikacji: EN

Abstrakty

EN

The article discusses tendencies in development of turbines, from the macro to micro scale, and their possible application in dispersed cogeneration, i.e. in home power installations. In the small scale, turbines and bearings are a source of specific problems connected with securing stable rotor operation and their susceptibility to some material imperfections, such as shaft cracks. New research tools composing the computer system MESWIR are presented, and results of system stability investigations taking into account thermoelastic deformations of bearing bushes and various variants of their fixing are discussed, along with the results of investigations of the effect of crack depth propagation on the dynamic state of the entire system. The obtained results are rather surprising and frequently in opposition to a so-called engineering intuition. The machine selected for investigations is a three-support rotating machine with two discs, in operation in conditions specific for microturbines (low Sommerfeld numbers). The developed research tools have turned out extremely applicable for assessing vibroacoustic threats generated by this type of machines.

Słowa kluczowe

EN

microturbines; microbearings; dispersed; cogeneration

• Wydawca: Instytut Podstawowych Problemów Techniki PAN ; Komitet Akustyki PAN ; Polskie Towarzystwo Akustyczne
• Czasopismo: Archives of Acoustics
• Rocznik: 2007
• Tom: Vol. 32, No. 2
• Strony: 263--277
• Opis fizyczny: Bibliogr. 4 poz., rys.

Twórcy

autor

Kiciński J.

• Institute of Fluid-Flow Machinery, Polish Academy of Sciences, Fiszera 14, 80-952 Gdańsk, Poland,

Bibliografia

• [1] KICIŃSKI J., Rotor dynamics, IFFM Publisher, 2006 (www.rotor-dynamics.imp.gda.pl).
• [2] SCHMIDT MARTIN A., Technologies for microturbomachinery, MIT, Transducers'01, The 11-th International Conference on Solid-State Sensors and Actuators, Munich, Germany, June 10.14, 2001.
• [3] FRECHETTE LUC G., JACOBSON STUART A., Demonstration of a microfabricated high-speed turbine supported on gas bearings, MIT, Solid-State Sensor and Actuator Workshop, Hilton Head Is., SC, June 4.8, 2000.
• [4] FRECHETTE LUC G., Assessment of viscous flows in high-speed micro rotating machinery for energy conversion applications, Proceedings of 2001 ASME International Mechanical Engineering Congress and Exposition, November 11.16, New York 2001.