Analytical Performance Evaluation of Humphrey Cycle for Turbine Engine Application

• Autorzy: Tarnawski P.
• Języki publikacji: EN

Abstrakty

EN

A continuous effort of engineers is being striving to improve efficiency and reduce specific fuel consumption. High hope lies in pressure gain combustion field (PGC). The Humphrey ideal cycle delivers more than 10% higher efficiency than the Brytona-Joule cycle. The impact of the pressure ratio, adiabatic exponent, intercooling and heat regeneration was investigated in the paper. Engine efficiency according to analytical calculation reached 45%. The engine based on the Humphrey cycle can be realized as an pulse powered turbine engine. It should work according repeating cycle that consists of filling, combustion and exhaust. The cycle has to be controlled by the valve timing system. Due to the variable thermal parameters in the chamber, an effective expansion of the energy impulse required the nozzles with various ratio of outlet cross section to minimum cross-sectional. More precise efficiency estimation of pulse power turbine engine could be done by means of three dimensional numerical analysis with assumed geometry of valve timing design.

Słowa kluczowe

EN

Humphrey cycle; turbine engine; pressure gain combustion; de Laval nozzle; engine efficiency

• Wydawca: Oficyna Wydawnicza Politechniki Warszawskiej
• Czasopismo: Machine Dynamics Research
• Rocznik: 2017
• Tom: Vol. 41, No. 3
• Strony: 27--37
• Opis fizyczny: Bibliogr. 10 poz., wykr.

Twórcy

autor

Tarnawski P.

• Warsaw University of Technology, Institute of Machine Design Fundamentals

Bibliografia

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