Open Access Open Access  Restricted Access Subscription or Fee Access

Improving the Performance of Steam Power Plant by Applying Energy and Exergy Analysis at Altering Operating Parameters


(*) Corresponding author


Authors' affiliations


DOI: https://doi.org/10.15866/irecon.v11i1.23452

Abstract


This study presents the energy and exergy analysis for unit three of the Al-Mosyab thermal power plant, which has a capacity of 225 MW. The energy losses, exergy destruction and second law efficiency, are computed. The objective is to obtain a comprehensive prediction of improvement that will happen in the performance. Results showed that the second law efficiency of the cycle is 34.91%, and the maximum exergy destruction was at the boiler by 86%. The plant's second law efficiency improves successfully to 37.65%, and 0.67 kg/s of the fuel mass flow rate can be saved. As well as, the total exergy destruction decreased by 10.8% at increasing the feedwater temperature to 230 °C. The second law efficiency has enhanced to 35.74% and 1.32% of the exergy destruction drops when reducing the mass flow rate of the desuperheater spray water of the main steam. The second law efficiency increased by 2.27%, and 1.25% of the total exergy destruction was reduced when the hot reheat pressure increased. Moreover, the analysis reveals that the plant's second law efficiency has grown by 6.45% and that the total exergy destruction has fallen by 3.31% when cold reheat steam temperature is reduced.
Copyright © 2023 Praise Worthy Prize - All rights reserved.

Keywords


Exergy Destruction; Second Law Efficiency; Reheat Operating Condition; Net Power Output; Al-Mosyab Thermal Power Plant

Full Text:

PDF


References


Regulagadda, P., I. Dincer, and G.J.A.T.E. Naterer, Exergy analysis of a thermal power plant with measured boiler and turbine losses. Applied Thermal Engineering 2010. 30(8-9): p. 970-976.
https://doi.org/10.1016/j.applthermaleng.2010.01.008

Gambini, M., M.J.E.C. Vellini, and Management, Hybrid thermal power plants: Solar-electricity and fuel-electricity productions. Energy Conversion and Management, 2019. 195: p. 682-689.
https://doi.org/10.1016/j.enconman.2019.04.073

Rosen, M. A. J. E., An International Journal, Energy-and exergy-based comparison of coal-fired and nuclear steam power plants. Exergy, An International Journal 2001. 1(3): p. 180-192.
https://doi.org/10.1016/S1164-0235(01)00024-3

Ahmed, A.H., et al., Exergy and energy analysis of 150 MW gas turbine unit: A case study. Journal of Advanced Research in Fluid Mechanics and Thermal Sciences 2020. 67(1): p. 186-192.

Rao, T.M. and S.J.I.J.o.A.E.R. Rao, A method to improve exergtic efficiency of power plant cycle by heat pipes. International Journal of Applied Engineering Research 2018. 13(1): p. 311-317.

Hasti, S., A. Aroonwilas, and A.J.E.P. Veawab, Exergy analysis of ultra super-critical power plant. Energy Procedia 2013. 37: p. 2544-2551.
https://doi.org/10.1016/j.egypro.2013.06.137

Tsatsaronis, G. and F.J.E.o.L.S.S. Cziesla, EOLSS Publishers, Oxford, UK, Exergy, Energy Systems Analysis and Optimization. 2009. 1: p. 34-146.

Kotas, T., The exergy method of thermal power plants. 1995: Malabar, FL: Krieger Publishing Company.

Khaleel, O.J., et al., Energy and exergy analysis of the steam power plants: A comprehensive review on the Classification, Development, Improvements, and configurations. Ain Shams Engineering Journal 2022. 13(3): p. 101640.
https://doi.org/10.1016/j.asej.2021.11.009

Tsatsaronis, G. and T.J.I.J.o.E. Morosuk, Understanding and improving energy conversion systems with the aid of exergy-based methods. International Journal of Exergy, 2012. 11(4): p. 518-542.
https://doi.org/10.1504/IJEX.2012.050261

Basem, A., et al., The energy and exergy analysis of a combined parabolic solar dish-steam power plant. Renewable Energy Focus 2022. 41: p. 55-68.
https://doi.org/10.1016/j.ref.2022.01.003

Khaleel, O.J., F.B. Ismail, and T.K. Ibrahim, Thermal Performance Analysis Of Steam Power Plant Based On Exergy Criteria. International Journal Of Scientific & Technology Research, Volume 9, Issue 09, 2020, pp. 172-178.

Khatib, H.J.E.p., IEA world energy outlook 2011-A comment. Energy Policy 2012. 48: p. 737-743.
https://doi.org/10.1016/j.enpol.2012.06.007

Elmzughi, M.F., et al., Optimization and Energy Performance of 400MW Steam Power Plant Based on Mini REFPROP Software Packages. i-manager's Journal on Mechanical Engineering 2021. 11(4): p. 1.
https://doi.org/10.26634/jme.11.4.18078

Nasreldin Abdalla, K., et al., Energy and Exergy Analysis of a Steam Power Plant in Suda. African Journal of Engineering & Technology 2021.
https://doi.org/10.47959/AJET.2021.1.1.4

Babaei Jamnani, M., A.J.E.S. Kardgar, and Engineering, Energy-exergy performance assessment with optimization guidance for the components of the 396-MW combined-cycle power plant. Energy Science & Engineering, 2020. 8(10): p. 3561-3574.
https://doi.org/10.1002/ese3.764

Ahmadi, G.R., D.J.R. Toghraie, and S.E. Reviews, Energy and exergy analysis of Montazeri steam power plant in Iran. Renewable and Sustainable Energy Reviews 463 2016. 56: p. 454-463.
https://doi.org/10.1016/j.rser.2015.11.074

Mohammadi, A., et al., Exergy and economic analyses of replacing feedwater heaters in a Rankine cycle with parabolic trough collectors. Energy Reports 2018. 4: p. 243-251.
https://doi.org/10.1016/j.egyr.2018.03.001

Luyao, Z., et al., Exergy analysis and economic evaluation of the steam superheat utilization using regenerative turbine in ultra-supercritical power plants under design/off-design conditions. Energy Science & Engineering 2017. 5(3): p. 156-166.
https://doi.org/10.1002/ese3.158

Mohammed, M.K., et al., Energy and exergy analysis of the steam power plant based on effect the numbers of feed water heater. Journal of Advanced Research in Fluid Mechanics and Thermal Sciences 2019. 56(2): p. 211-222.

Chart Software. Engineering Equation Solver. 2018. Available:
https://fchartsoftware.com/

Hafdhi, F., et al., Energetic and exergetic analysis of a steam turbine power plant in an existing phosphoric acid factory. Energy Conversion and Management 2015. 106: p. 1230-1241.
https://doi.org/10.1016/j.enconman.2015.10.044

Rajper, M.A., et al., Energy and exergy analysis of 210 MW Jamshoro thermal power plant. Mehran University Research Journal of Engineering and Technology 2016. 35(2): p. 265-274.
https://doi.org/10.22581/muet1982.1602.12

Aliyu, M., et al., Energy, exergy and parametric analysis of a combined cycle power plant. 2020. 15: p. 100450. Thermal Science and Engineering Progress.
https://doi.org/10.1016/j.tsep.2019.100450

Kaushik, S., et al., Exergoeconomic evaluation of a solar thermal power plant. International Journal of Solar Energy 2001. 21(4): p. 293-314.
https://doi.org/10.1080/01425910108914377

Medica-Viola, V., et al., Comparison of conventional and heat balance based energy analyses of steam turbine. Scientific Journal of Maritime Research 2020. 34(1): p. 74-85.
https://doi.org/10.31217/p.34.1.9

Geete, A. and A.J.C.S.i.T.E. Khandwawala, Thermodynamic analysis of 120 MW thermal power plant with combined effect of constant inlet pressure (124.61 bar) and different inlet temperatures. Case Studies in Thermal Engineering 2013. 1(1): p. 17-25.
https://doi.org/10.1016/j.csite.2013.08.001

Cortes-Rodriguez, E.F., et al., Experimental efficiency analysis of sugarcane bagasse boilers based on the first law of thermodynamics. Journal of the Brazilian Society of Mechanical Sciences and Engineering 2017. 39(3): p. 1033-1044.
https://doi.org/10.1007/s40430-016-0590-y

Kotas, T.J., The exergy method of thermal plant analysis. 2013: Elsevier.

Kaushik, S., O.K.J.J.o.T.A. Singh, and Calorimetry, Estimation of chemical exergy of solid, liquid and gaseous fuels used in thermal power plants. Journal of Thermal Analysis and Calorimetry 2014. 115(1): p. 903-908.
https://doi.org/10.1007/s10973-013-3323-9

Kanoglu, M., I. Dincer, and M.A.J.E.P. Rosen, Understanding energy and exergy efficiencies for improved energy management in power plants. Energy Policy 2007. 35(7): p. 3967-3978.
https://doi.org/10.1016/j.enpol.2007.01.015

Vandani, A.M.K., et al., Exergy analysis and evolutionary optimization of boiler blowdown heat recovery in steam power plants. Energy Conversion and Management 2015. 106: p. 1-9.
https://doi.org/10.1016/j.enconman.2015.09.018

Sarkar, D., Thermal power plant: design and operation. 2015: Elsevier.
https://doi.org/10.1016/B978-0-12-801575-9.00015-9

Bahoosh, R., et al., Energy and exergy analysis of a diesel engine running with biodiesel fuel. Journal of Heat and Mass Transfer Research 2018. 5(2): p. 95-104.

Dincer, I. and M.A. Rosen, Exergy: energy, environment and sustainable development. 2012: Newnes.
https://doi.org/10.1016/B978-0-08-097089-9.00004-8

Altarawneh, O.R., et al., Energy and exergy analyses for a combined cycle power plant in Jordan. Case Studies in Thermal Engineering 2022. 31: p. 101852.
https://doi.org/10.1016/j.csite.2022.101852

Ray, T.K., et al., Exergy-based performance analysis for proper O&M decisions in a steam power plant. Energy Conversion and Management 2010. 51(6): p. 1333-1344.
https://doi.org/10.1016/j.enconman.2010.01.012

Maftouh, A., El Fatni, O., Echchikhi, A., Bahaj, T., Gueraoui, K., El Rhaleb, E., Effect of Feed Water Temperature on Reverse Osmosis Performance in a Borehole Water Desalination Plant: Numerical and Experimental Validation, (2022) International Journal on Engineering Applications (IREA), 10 (4), pp. 252-264.
https://doi.org/10.15866/irea.v10i4.21290

Orjuela Abril, S., Acevedo, C., Cardenas Gutierrez, J., Computational Fluid Dynamics Analysis of Combined Cycle Power Plant Heat Exchanger with OpenFOAM® Software, (2020) International Review on Modelling and Simulations (IREMOS), 13 (5), pp. 319-328.
https://doi.org/10.15866/iremos.v13i5.18891


Refbacks

  • There are currently no refbacks.


Please send any question about this web site to info@praiseworthyprize.com
Copyright © 2005-2024 Praise Worthy Prize