Exergy analysis of the Szewalski cycle with a waste heat recovery system

• Autorzy: Kowalczyk T. , Ziółkowski P. , Badur J.

Identyfikatory

DOI

10.1515/aoter-2015-0020

• Języki publikacji: EN

Abstrakty

EN

The conversion of a waste heat energy to electricity is now becoming one of the key points to improve the energy efficiency in a process engineering. However, large losses of a low-temperature thermal energy are also present in power engineering. One of such sources of waste heat in power plants are exhaust gases at the outlet of boilers. Through usage of a waste heat regeneration system it is possible to attain a heat rate of approximately 200 MW_th, under about 90°C, for a supercritical power block of 900 MW_el fuelled by a lignite. In the article, we propose to use the waste heat to improve thermal efficiency of the Szewalski binary vapour cycle. The Szewalski binary vapour cycle provides steam as the working fluid in a high temperature part of the cycle, while another fluid – organic working fluid – as the working substance substituting conventional steam over the temperature range represented by the low pressure steam expansion. In order to define in detail the efficiency of energy conversion at various stages of the proposed cycle the exergy analysis was performed. The steam cycle for reference conditions, the Szewalski binary vapour cycle as well as the Szewalski hierarchic vapour cycle cooperating with a system of waste heat recovery have been comprised.

Słowa kluczowe

EN

Szewalski cycle; binary vapour cycle; exergy analysis; waste heat

PL

idea Szewalskiego; analiza egzergii; ciepło odpadowe

• Wydawca: Wydawnictwo Instytutu Maszyn Przepływowych PAN ; Komitet Termodynamiki i Spalania PAN
• Czasopismo: Archives of Thermodynamics
• Rocznik: 2015
• Tom: Vol. 36, no. 3
• Strony: 25--48
• Opis fizyczny: Bibliogr. 35 poz., rys., tab.

Twórcy

autor

Kowalczyk T.

• Energy Conversion Department, The Szewalski Institute of Fluid-Flow Machinery of the Polish Academy of Sciences, Fiszera 14, 80-231 Gdańsk, Poland
• Gdansk University of Technology, Conjoint Doctoral School at the Faculty of Mechanical Engineering, Gabriela Narutowicza 11/12 st., 80-233 Gdańsk, Poland

autor

Ziółkowski P.

• Energy Conversion Department, The Szewalski Institute of Fluid-Flow Machinery of the Polish Academy of Sciences, Fiszera 14, 80-231 Gdańsk, Poland
• Gdansk University of Technology, Conjoint Doctoral School at the Faculty of Mechanical Engineering, Gabriela Narutowicza 11/12 st., 80-233 Gdańsk, Poland

autor

Badur J.

• Energy Conversion Department, The Szewalski Institute of Fluid-Flow Machinery of the Polish Academy of Sciences, Fiszera 14, 80-231 Gdańsk, Poland

Bibliografia

• [1] SZEWALSKI R.: The binary vapour turbine set of great output, its concept and some basic engineering problems. Transactions IFFM 42-44(1969), 119–140.
• [2] SZEWALSKI R.: Actual problems of development of energetical technology. Enhancement of unit work and efficiency turbine and power unit. Ossolineum, Wrocław 1978 (in Polish).
• [3] KOWALCZYK T., ZIÓŁKOWSKI P., BADUR J.: Exergy losses in the Szewalski binary vapour cycle Entropy 17(2015), 10, 7242–7265.
• [4] ZIÓŁKOWSKI P., HERNET J., BADUR J.: Revalorization of the Szewalski binary vapour cycle. Arch. Thermodyn. 35(2014), 3, 225–249.
• [5] ZIÓŁKOWSKI P., KOWALCZYK T., HERNET J., KORNET S.: The thermodynamic analysis of the Szewalski hierarchic vapour cycle cooperating with a system of waste heat recovery. Transactions IFFM after recession.
• [6] ZIÓŁKOWSKI P., MIKIELEWICZ D.: Thermodynamic analysis of the supercritical 900 MWe power unit, co-operating with an ORC cycle. Arch. Energ. 42(2012), 165–174 (in Polish).
• [7] ZIÓŁKOWSKI P., MIKIELEWICZ D., MIKIELEWICZ J.: Increase of power and efficiency of the 900 MW supercritical power plant through incorporation of the ORC. Arch. Thermodyn. 34(2013), 4, 51–71.
• [8] MIKIELEWICZ D., BARTELA Ł., ZIÓŁKOWSKI P., WAJS J., MIKIELEWICZ J.: Operation of the 900 MW power plant with the ORC supplied from three heat sources. Current Power Engineering problems Vol. II, (K. Wójs, P. Szulc, Eds.), Publishers Wrocław University, 2014, 263–277.
• [9] MIKIELEWICZ D., ZIÓŁKOWSKI P., WAJS J., MIKIELEWICZ J.: Combined operations of 900 MW power plant with the ORC through the bleed steam extraction point and CO2 recovery system. In: Proc. Heat Transfer and Renewable Sources of Energy 2014, ZUT, Szczecin 2014, 380–386.
• [10] ŁUKOWICZ H., KOCHANIEWICZ A.: Analysis of the use of waste heat obtained from coal-fired units in organic Rankine cycles and for brown coal drying. Energy 45(2012), 203–212.
• [11] BARTNIK R.: Thermodynamic fundamentals for production of electric power in hierarchical j -cycle system. Transactions IFFM 126(2014), 141–151.
• [12] LAZZARETTO A.: Fuel and product definitions in cost accounting evaluations: Is it a solved problem? In: Proc. 12th Joint Eur. Thermodyn. Conf., Brescia, 2013 JETC 2013 (M. Pilotelli, G.P. Beretta, Eds.), 244–250.
• [13] ROSEN M.A., BULUCEA C.A.: Using exergy to understand and improve the efficiency of electrical power technologies. Entropy 11(2009), 820-835, DOI:10.3390/e11040820.
• [14] GAGGIOLI R., REINI M.: PANEL I: Connecting 2nd law analysis with economics, ecology and energy policy. Entropy 16(2014), 3903–3938, DOI:10.3390/e16073903.
• [15] CENUŞĂ V.E., BADEA A., FEIDT M., BENELMIR R.: Exergetic optimization of the heat recovery steam generators by imposing the total heat transfer area. Int. J. Thermodyn. 7(2004), 3, 149–156.
• [16] FEIDT M.: Two examples of exergy optimization regarding the ‘Thermo-Frigopump’ and combined heat and power systems. Entropy 15(2013), 544–558.
• [17] FEIDT M., COSTEA M.: Energy and exergy analysis and optimization of combined heat and power systems. Energies 5(2012), 3701–3722.
• [18] ZHAI H., DAI Y.J., WU J.Y., WANG R.Z.: Energy and exergy analyses on a novel hybrid solar heating, cooling and power generation system for remote areas. Appl. Energy 86(2009), 1395–1404.
• [19] DUDAR A., BUTRYMOWICZ D., ŚMIERCIEW K., KARWACKI J.: Exergy analysis of operation of two-phase ejector in compression refrigeration systems. Arch. Thermodyn. 34(2013), 4, 107–122.
• [20] BARELLI L., BIDINI G., GALLORINI F., OTTAVIANO A.: An energetic–exergetic comparison between PEMFC and SOFC-based micro-CHP systems. Int. J. Hydrogen. Energ. 36(2011), 3206–3214.
• [21] BINGÖL E., ILKIŞ B., ERALP C.: Exergy based performance analysis of high efficiency poly-generation systems for sustainable building applications. Energ. Build. 43(2011), 3074–3081.
• [22] NIEMINEN J., DINCER I.: Comparative exergy analyses of gasoline and hydrogen fuelled ICEs. Int. J. Hydrogen. Energ. 35(2010), 5124–5132.
• [23] ABUSOGLU A., KANOGLU M.: Exergoeconomic analysis and optimization of combined heat and power production: a review. Renew. Sustain. Energ. Rev. 13(2009), 2295–2308.
• [24] SZARGUT J.: Exergy method: technical and ecological applications.: WIT Press, Southampton 2005.
• [25] SZARGUT J.T., ZIĘBIK A., STANEK W.: Depletion of the non-renewable natural exergy resources as a measure of the ecological cost. Energ. Convers. Manage. 43(2002), 1149–1163.
• [26] ZIĘBIK A., GŁADYSZ P.: Thermoecological analysis of an oxy-fuel combustion power plant integrated with a CO2 processing unit. Energy 88(2015), 37–45.
• [27] ZIĘBIK A., GŁADYSZ P.: Analysis of the cumulative exergy consumption of an integrated oxy-fuel combustion power plant. Arch. Thermodyn. 34(2013), 3, 105–122.
• [28] SZARGUT J.T., STANEK W.: Thermo-ecological optimization of a solar collector. Energy 32(2007), 584–590.
• [29] POLKO K.: Modeling of waste heat recovery from exhaust flue gases. PhD thesis, Wrocław University of Technology, Wrocław 2012 (in Polish).
• [30] BAO J., ZHAO L.: A review of working fluid and expander selections for organic Rankine cycle. Renew. Sust. Energ. Rev. 24(2013) 325–342.
• [31] HORBAJ P., BRAUNMILLER G., TAUS P.: On a environmentally friendly supply of energy . Transactions IFFM 124(2014) 221–230.
• [32] SRINIVAS T., Reddy: Study on power plants arrangements for integration. Energ. Convers. Manage. 85(2014) 7–12.
• [33] VÉLEZ F., SEGOVIA J.J., MARTÍN M.C., ANTOLÍN G., CHEJNE F., QUIJANO A.: A technical, economical and market review of organic Rankine cycles for the conversion of low-grade heat for power generation. Renew. Sust. Energ. Rev. 16(2012), 6, 4175–89.
• [34] SZARGUT J., PETELA R.: Exergy. WNT, Warsaw 1965. (in Polish) [35] Feidt M., Blaise M.: A new three objectives criterion to optimize thermomechanical engines model. In: Proc. 1st Int. e-Conf. on Energies, 14-31 March 2014. Available online http://sciforum.net/conference/ece-1(accessed on 10.09.2015).
• [35] FEIDT M., BLAISE M.: A new three objectives criterion to optimize thermomechanical engines model . In: Proc. 1st Int. e-Conf. on Energies, 14-31 March 2014. Available online http://sciforum.net/conference/ece-1 (accessed on 10.09.2015).