Development of flow parts of cogeneration turbines with a capacity of 2.5 and 5 MW using modern computer technology

• Date: 2015
• Main Authors: Русанов, Р. А., Лампарт, П., Русанов, А. В., Пащенко, Н. В.
• Format: Article
• Language: Russian
• Published: Інститут енергетичних машин і систем ім. А. М. Підгорного Національної академії наук України 2015
• Subjects: cogeneration turbine; numerical method; regulating stage; partial admission; rotable diaphragm; УДК 621.165; 532.6
• Online Access: https://journals.uran.ua/jme/article/view/51271
• Journal Title: Journal of Mechanical Engineering

The method for the design of axial flow turbine parts is described. The method is based on the use of methods of analytical describing of the geometry of the flow parts and gas-dynamic calculations of varying complexity. Geometry description of flow parts is performed using analytical methods profiling, initial data which is used a limited number of parameter values. To account for thermodynamic properties of the working medium an analytical interpolation method is used for approximating equations of the formulation IAPWS-95. 3D turbulent flow model is realized in the program complex IPMFlow, developed based on the earlier codes FlowER and FlowER-U. The results of computations obtained from the code IPMFlow have the necessary reliability in the qualitative structure of the flow and in the quantitative characteristics of the isolated turbine cascades and turbine as a whole. Several types of flow parts of cogeneration turbine with electric power up to 5 MWe and thermal power up to 10 MWt are presented. Designs of flow parts are intended to operate year-round - during the heating season they can be operated in the heating mode (extraction), while in the off-season in condensing mode with the maximum efficiency in the production of electricity. Gas-dynamic efficiency of the developed turbine flow parts is adequate for the power machines of this kind.