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INCREASE OF THERMAL EFFICIENCY OF COGENERATION PLANT BY WASTE HEAT UTILISATION WITH ABSORPTION HEAT PUMP

ABSTRACT
The very rapid growth of share of electricity generation from renewable sources is observed recent years. However, even if that share reaches about 50% in 2050, almost 50% of electricity will still be generated based on fossil fuels combustion rather than on nuclear energy. That means, energy generated from coal will still be important for the next decades. The largest sources of energy loses within the steam power plant is the steam cooling system. The energy dissipated to the atmosphere in that system is very difficult to be utilized mainly due to the relatively low temperature, and its direct utilization without additional equipment is rather impossible. The large amount of energy lost to the environment leads to low overall thermal efficiency of the plant, therefore, utilization of this energy should be of primary importance. The paper shows concept of increasing efficiency of cogeneration plant thermal cycle by utilisation of waste heat from flue gas with absorption heat pump, for the purpose of system heat generation. Calculations of combined system of power plant fuelled with biomass fuel with implemented waste heat utilisation system were performed for one heating season and different moisture content in the fuel. Results show, that owing to waste heat utilization instead of conventional heat exchanger, additional electricity generation during the heating season at even 46864 MWh may be achieved which is over 18% more for the moisture content in the biomass fuel at 0.5 kg/kg, the same ambient conditions and heat generation.
KEYWORDS
PAPER SUBMITTED: 2018-11-06
PAPER REVISED: 2018-12-28
PAPER ACCEPTED: 2019-01-24
PUBLISHED ONLINE: 2019-09-22
DOI REFERENCE: https://doi.org/10.2298/TSCI19S4101Z
CITATION EXPORT: view in browser or download as text file
THERMAL SCIENCE YEAR 2019, VOLUME 23, ISSUE Supplement 4, PAGES [S1101 - S1112]
REFERENCES
  1. Spliethoff, H., Power Generation from Solid Fuels. Springer-Verlag, Berlin, 2010
  2. Meherwan, P. B., Handbook for Cogeneration and Combined Cycle Power Plants, 2nd ed., ASME, New York, USA, 2010 Table 4. Total additional electricity production
  3. Kanniche, M., et al., Pre-Combustion, Post-Combustion and Oxy-Combustion in Thermal Power Plant for CO2 Capture, Applied Thermal Engineering, 30 (2010), 1, pp. 53-62
  4. Wang, Y., et al., A Review of Post-Combustion CO2 Capture Technologies from Coal-Fired Power Plants, Energy Procedia, 114 (2017), July, pp. 650-665
  5. Wang, M., et al., Post-Combustion CO2 Capture with Chemical Absorption: A State-of-the-art Review, Chemical Engineering Research and Design, 89 (2011), 9, pp. 1609-1624
  6. Bchattacharyya, D., et al., Post-Combustion CO2 Capture Technologies - A Review of Processes for Colvent-Based CO2 Capture, Chemical Engineering, 17 (2017), Aug., pp. 78-92
  7. Stojiljković, M. M., et al., Effects of Implementation of Co-Generation in the District Heating System of the Faculty of Mechanical Engineering in Niš, Thermal Science, 14 (2010), Suppl. 1, pp. S41-S51
  8. Mančić, V., et al., Optimization of a Polygeneration System for Energy Demands of a Livestock Farm, Thermal Science, 20 (2016), Suppl. 5, pp. S1285-S1300
  9. Sun, J., et al., Experimental Study a Large Temperature Difference Thermal Energy Storage Tank for Centralized Heating Systems, Thermal Science, 22 (2018), 1B, pp. 613-621
  10. Mijakovski, V., et al., Comparative Analysis of Possibilities for Raising the Efficiency in Thermal Pow-er Plant by Utilisation of Waste Heat Energy, Thermal Science, 20 (2016), 6, pp. 2171-2181
  11. Martić, I. I., et al., Application and Design of an Economizer for Waste Heat Recovery in a Co-Generation Plant, Thermal Science, 20 (2016), 4, pp. 1355-1362
  12. Xu, C., et al., Performance Improvement of a 330 MWe Power Plant by Flue Gas Heat Recovery Sys-tem, Thermal Science, 20 (2016), 1, pp. 303-314
  13. Kolanowski, B., F., Small-Scale Cogeneration Gandbook, CRC Press, Boca Raton, Fla., USA, 2011
  14. Jia, L., et al., An Experimental Study on Latent Heat Recovery of Exhaust Wet Flue Gas, Journal of Thermal Science, 11 (2001), 2, pp. 144-147
  15. Macchi, E., Astolfi, M., Organic Rankine Cycle (ORC) Power Systems : Technologies and Applications, Woodhead Publishing Ltd., Cambridge, UK, 2016
  16. Zarzycki, R., Panowski, M., Analysis of the Flue Gas Preparation Process for the Purposes of Carbon Dioxide Separation Using the Adsorption Method, Journal of Energy Resources Technology, 140 (2018), 3, pp. 032008-1-032008-7
  17. Herold, K. E., et al., Absorption Chillers and Heat Pumps, 2nd ed., CRC Press, Taylor & Francis Group, London, 2016
  18. Zhu, Q., et al., Performance Analysis of Organic Rankine Cycles Using Different Working Fluids, Thermal Science, 19 (2015), 1, pp. 179-191
  19. Cihan, E., Kavasogullari, B., Energy and Exergy Analysis of a Combined Refrigeration and Waste Heat Driven Organic Rankine Cycle System, Thermal Science, 21 (2017), 6A, pp. 2621-2631
  20. Fan, X-W., et al., Thermodynamic Comparision of R744/R600a and R744/R600 Used in Mid-High Temperature Heat Pump System, Thermal Science, 18 (2014), 5, pp. 1655-1659
  21. Wawrzynczak, D., et al., The Pilot Dual-Reflux Vacuum Pressure Swing Adsorption Unit for CO2 Cap-ture From Flue Gas, Separation and Purification Technology, 209 (2019), Jan., pp. 560-570
  22. Wawrzynczak, D., et al., Effect of Desorption Pressure on CO2 Separation from Combustion Gas by Means of Zeolite 13X and Activated Carbon, Polish Journal of Environmental Studies, 23 (2014), 4, pp. 1437-1440
  23. Panowski, M.,et al., Modelling of CO2 Adsorption from Exhaust Gases, Proceedings, 20th International Conference on Fluidized Bed Combustion, Xian, China, 2009, pp. 889-894
  24. Zarzycki R., et al., Application of Absorption Heat Pump into the System of Cogeneration Production of Electricity and Heat (in Polish), Polityka Energetyczna - Energy Policy Journal, 17 (2014), 4, pp. 375-389
  25. Stojiljković, M. M., et al., Optimization of Operation of Energy Supply Systems with Co-Generation and Absorption Refrigeration, Thermal Science, 16 (2012), 2, pp. S409-S422
  26. Lin, G-P., et al., Modelling of the Absorption and Desorption Process of Chemical Heat Pumps, Journal of Thermal Science, 2 (1993), 1, pp. 57-60
  27. Kurtulmus, N., Horuz, I., An Industrial Vapor Absorption Air Conditioning Application, Journal of Thermal Science and Technology, 36 (2017), 2, pp. 49-60
  28. Hilali, I., Soylemez, M. S., An Application of Engine Exhaust Gas Driven Cooling System in Automobile Air-conditioning System, Journal of Thermal Science and Technology, 35 (2015), 1, pp. 27-34
  29. Loh, W. S., et al., Performance Analysis of Waste Geat Driven Pressurized Adsorption Chiller, Journal of Thermal Science and Technology, 5 (2010), 2, pp. 252-265
  30. Smolen, S., Budnik-Rodz, M., Technical and Economic Aspects of Waste Heat Utilisation, Thermal Science, 11 (2007), 3, pp. 165-172
  31. Blarke, M. B., Lund, H., Large-Scale Heat Pumps in Sustainable Energy Systems: System and Project Perspectives, Thermal Science, 11 (2007), 3, pp. 143-152

© 2019 Society of Thermal Engineers of Serbia. Published by the Vinča Institute of Nuclear Sciences, Belgrade, Serbia. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution-NonCommercial-NoDerivs 4.0 International licence