Influence of Initial Parameters on the Performances of the Flow System of Turbines Operating on Low-Boiling Actuating Medium
DOI:
https://doi.org/10.20998/2078-774X.2016.09.18Анотація
A comparative analysis of supercritical and subcritical steam turbine cycles with low-boiling actuating medium has been done. The effect of initial steam parameters at the turbine inlet on the metering, geometric and power characteristics of the turbine was demonstrated using different actuating media. Steam turbine cycles of this type using the mix (multicomponent) medium or single-component actuating medium that define the amount of capital expenditures and have an impact on the further operation of heat flow diagram have also been compared. Computation studies of the flow system of turbines using different actuating media were carried out taking into consideration the thermodynamic properties and peculiarities of low-boiling actuating media in question. The data of computation studies that were carried out using the software system developed by the IPMash of the National Academy of Sciences of Ukraine showed that the selection of actuating medium should be based on the availability of industrial production that would allow us to reduce the procurement costs for it and the costs for the replenishment of leakages (if available) during the operation. When implementing the low-boiling actuating media-based heat flow diagram it is required to compare the efficiency of thermodynamic cycles, and to estimate the specific quantity of metal and the power efficiency of all the components of power plant. It should also be taken into account that the boundary curve of dryness fraction is of an inclining type and therefore to reduce the costs required for the condensation of actuating medium its parameters should be selected in a way so as to bring the expansion process closer to the boundary curve. It has been established that the overall dimensions of the flow system of turbine with supercritical and subcritical parameters change insignificantly; the flow-rate of actuating medium differs within 10 %, and the electric power changes up to 5 %.
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Belov, G. V. and Dorohova, M. A. (2014), “Organic Rankine Cycle and its use in alternativeenergy”,Scienceandeducation,no.ФС77-48211, pp. 99–124.
Lukawski, M. (2009), “Design and optimization of standardized Organic Rankine Cycle power plant for Europeanconditions”,Тhe School for Renewable Energy Science in affiliation with University of Iceland & the University of Akureyri. Akureyri.
Quoilin, S. (2011), “Sustainable Energy Conversion Through the Use of Organic Rankine Cycles for Waste Heat RecoveryandSolar Applications”, Energy systems research unit Aerospace and mechanical engineering department universityofLiege, Liege.
Walter de Freitas Pereira Marques M. (2014), Potential for ORC Application in the Portuguese ManufacturingIndustry.Dissertação para obtenção do Grau de Mestre em Engenharia do Ambiente, perfil GestãoeSistemasAmbientais.Retrievedfrom:http://run.unl.pt/bitstream/10362/13041/1/Marques_2014.pdf (Accessed 10January2016).
Botstein, V. A., Kanevsky, A. L., Litvinenko, V. G. and Skoromniy, A. L. (2011), “The use of secondary energy resources atthemetallurgical enterprises of Ukraine”, Ecology and industry, no. 1, pp. 85–90.
Redko, A. A., Pavlovsky, S. V. and Kompan, A. I. (2013), “Improving the efficiency of heat recovery of powerinstallations”,Vesnik of the KNUTD, no. 6, pp. 231–237.
Sergienko, R. V., Bilek, B. D. and Kabakov, V. Y. (2012), “Ways of increasing the efficiency of the working cycle of energyheatutilization installations with low-boiling working fluids”, Aerospace Engineering and Technology, no. 8 (95), pp. 38–42.
Redko, A. A. (2010), Metody povyshenija effektivnosti sistem geotermfl1nogo teplosnabzhenija [Methods of increasingtheefficiency of geothermal heating systems], DonNACEA, Makiyivka, Ukraine.
Shubenko, A. L., Babak, N. Y., Rogovoy, M. I. et al. (2010), “Economic efficiency of utilization of low-grade secondaryenergyresources by installing a turbine on the low boiling working fluid”, Energy saving. Energy. Energy audit, no.6,pp. 18–26.
Shubenko, A. L., Malyarenko, V. A., Babak, N. Y. and Senetskyi, A. V. (2012), “Disposal of waste heat of industrialoftechnological processes of the enterprise with the purpose of electricity generation”, Energy saving. Energy.Energyaudit,no.07(101), pp. 23–29.
Nikiforov, B. I. and Zaslavets, G. V. (2000), Energocberegenie na metallurgicheskih predprijatijah [Energy savingonmetallurgical enterprises], MGTU, Magnitogorsk, Russia.
Shubenko, A. L., Malyarenko, V. A., Senetskyi, A. V. and Babak, N. Y. (2014), Kogeneratsionnye tehnologii v energetikenaosnove primenenija parovyh turbin maloy moshchnosti [Cogeneration technologies in energy on based the useoflow-powersteam turbines], IPMach NAS of Ukraine, Kharkov, Ukraine.
Van der Waals J. D. (2004), On the Continuity of the Gaseous and Liquid States, Dover, New York, USA.
Soave, G. (1972), “Equilibrium Constants from a Modified Redlich-Kwong Equation of State”, Chemical EngineeringScience,no. 27, pp. 1197–1203.
Heidemann, R. A. and Prausnitz, J. M. (1976), “A van der Waals-type equation of state for fluids with associatingmolecules”,Proc. NatI. Acad. Sci., vol. 73, no. 6, pp. 1773–1776.
Garland, C. W., Nibler, J. W. and Shoe-maker D. P. (2009), Experiments in Physical Chemistry, McGraw-Hill HigherEducation,New York, USA.
Peng, D. Y. and Robinson, D. B. (1976), “A new two – constant equation of state”, Industrial & EngineeringChemistryFundamentals, no. 15, pp. 59–64.
Abbas, R. J. (2011), “Thomson coefficients and Joule-Thomson inversion curves for pure compounds and binarysystemspredicted with the group contribution equation of state VTPR”, Fluid Phase Equilibria, no. 306, pp. 181–189.
Poling, B. E., Prausnitz, J. M. and O’Connell, J. P. (2001), “The properties of gases and liquids”, McGraw-Hill Companies,Inc.,New York, USA. doi: 10.1036/0070116822.
Pedersen, K. S. and Christensen, P. L. (2007), Phase Behavior of Petroleum Reservoir Fluids, Taylor & Francis Group,NewYork, USA.
Dan Surianu F. (2011), “Mathematical Modelling and Numerical Simulation of the Dynamic Behaviourof Thermal andHydroPower Plants”, Numerical Simulations of Physical and Engineering Processes. 2011, pp. 551–576.
Bihari, P., Gróf, G. and Gács, I. (2010), “Eficiency and cost modelling of thermal power plants”, Thermal Science, vol. 14,no.3, 821–834 pp. doi: 10.2298/TSCI1003821B.
AspenTech Company. Official website of company (2016), Electronic resource: finding resources by subject[Online],Retrieved from: http://www.aspentech.com/hysys/ (Accessed 10 January 2016).
Quoilin, S. et al. (2011), “Dynamic modeling and optimal control strategy of waste heat recovery Organic RankineCycles”,Applied Energy, no. 88, pp. 2183–2190.
Lyhvar, N. V., Govorushchenko, Yu. N. and Yakovlev, V. A. (2003), “Modeling thermal power units with usinginteractivegraphic scheme”, J. of Mechanical engineering, no. 1, pp. 30–41.
Termodinamicheskie lgP,h-diagrammy dlja hladagentov [Thermodynamics lgP,h-diagrams for refrigerants] (2003),"AVISANKO"Ltd., Moscow, Russia.
NGO "MosElektroPrivod". Official website of the manufacturer (2016), Electronic resource: finding resources by subject[Online], Retrieved from: http://moselectroprivod.ru/?cat=44 (Accessed 20 January 2016).
PE "Melnikov`s". Official website of the manufacturer (2016), Electronic resource: finding resources by subject[Online],Retrieved from: http://kran.odessa.ua/index.html (Accessed 25 January 2016).
