PROCEEDINGS OF THE RUSSIAN HIGHER SCHOOL
ACADEMY OF SCIENCES

Abstract
One way to improve fuel efficiency at combined heat power plants (CHPP) is using modern methods and algorithms of the operating mode exergy analysis in technological process control systems. Traditional methods of CHPP operating mode analysis are based on the physical method. This method does not allow correct evaluation of the thermodynamic efficiency of the operating mode and the efficiency of boiler and turbine systems operation as well as the efficiency of electric and heat power delivery at CHPP as a whole. For this reason, the potential of new technical facilities cannot be fully used. Currently any quantitative assessment of the exergic efficiency of the CHPP operating mode that helps most rationally use the available energy potential as well as the potential of CHPP technological process control systems is practically impossible. That is why a method of the analysis of the efficiency of boiler and turbine subsystems as well as CHPP as a whole based on the differential exergic approach is proposed. It also helps to analyze specific fuel consumption for delivering electric power and heat exsergy and exergic structural coeffi-cients. The calculation results of the CHPP with two cogeneration power units T-180/210 are presented in the paper. The CHPP exergy efficiency of heat exergy delivery is 0,275, specific fuel consumption for heat exsergy delivery is 0,447 kg s.f/kWhh; the CHPP efficiency of electric power delivery is 0,417 and specific fuel consumption for electric power delivery is 0,295 kg s.f/rWh.

References

1. RD 34.08.552–95. Metodicheskie ukazaniya po sostavleniyu otcheta elektrostantsii i aktsionernogo obshchestva energetiki i elektrifikatsii o teplovoi ekonomichnosti oborudova-niya [Guidance Document 34.08.552–95. Procedural guidelines for writing reports of electric power generating stations and energy utility and electrification corporations on thermal efficiency of equipment]. Moscow, ORGRES Publ., 1995. 122 p.
2. Nozdrenko G.V., Shchinnikov P.A. Kompleksnyi eksergeticheskii analiz energoblokov TES s novymi tekhnologiyami [Complex exergy analysis of power units of heat power plants based on new technologies]. Novosibirsk, NSTU Publ., 2009. 190 p.
3. Shchinnikov P.A., Nozdrenko G.V., Tomilov V.G., Ovchinnikov Yu.V., Lovtsov A.A., Kovalenko P.Yu., Zykova N.G., Vikhman O.A., Borodikhin I.V., Kompleksnye issledovaniya TES s novymi tekhnologiyami [Comprehensive investigations of ThPS with new technologies]. Novosibirsk, NSTU Publ., 2004. 528 p.
4. Borush O.V., Zykov S.V., Safronov A.V., Tomilov V.G., Shchinnikov P.A., Nozdrenko G.V. Otsenka real'nogo raskhoda topliva energoblokami TETs na osnove optimizatsionnykh raschetov ikh rezhimov raboty [Assessment of real fuel consumption of power units CHP based on optimization calculations of their operating modes]. Doklady Akademii nauk vysshei shkoly Rossiiskoi Federatsii – Proceedings of the Russian higher school Academy of sciences, 2013, no. 2 (21), pp. 26–33.
5. Nozdrenko G.V., Shchinnikov P.A., Borodikhin I.V. [Guiding principles and algorithms for computer system ORTES feasibility of techno-economic research TPP with new energy tech-nologies]. Sbornik nauchnykh trudov «Energosistemy, elektrostantsii i ikh agregaty» [Collection of proceedings "Power systems, power plants and units"], Novosibirsk, NSTU Publ., 2005, no. 9, pp. 22–42.
6. Nozdrenko G.V. Algoritm rascheta pokazatelei effektivnosti teploenergeticheskikh ustanovok pri eksergeticheskom analize [Algorithm for calculating the efficiency indicators of thermal power units in exergic analysis]. Izvestiya Sibirskogo otdeleniya Akademii nauk SSSR. Seriya tekhnicheskikh nauk – Proceedings of the Siberian Branch of the USSR Academy of Sciences. A series of technical sciences, 1982, no. 3, iss. 1, pp. 127–131.
7. Nozdrenko G.V. Eksergeticheskii analiz teploenergeticheskikh ustanovok [Exergic analysis of thermal power units]. Novosibirsk, NSTU Publ., 1982. 56 p.
8. Teplovoi raschet kotlov (normativnyi metod) [Thermal calculation boiler units (normative method)]. St. Petersburg, NPO TsKTI Publ., 1998. 256 p.