Performance Optimization of Dual Pressure Heat Recovery Steam Generator (HRSG) in the Tropical Rainforest

Abstract Full-Text HTML XML Download Download as PDF (Size:2102KB) PP. 347-364
DOI: 10.4236/eng.2015.76031    3,497 Downloads   4,661 Views   Citations

ABSTRACT

This work evaluates the performance optimization of heat recovery steam generator system in Afam VI power plant, Rivers State. Nigeria. Steady state monitoring and direct collection of data from the plant was performed including logged data for a period of 12 months. The data were analysed using various energy equations. Hysys software was used to model the temperature across the heating surfaces, and MATLAB software was used to determine the heat transfer coefficient, heat duties, steam flow, effectiveness of the HRSG. The optimization technique was carried out by varying the exhaust gas flow, exhaust gas temperature, steam pressure and the theoretical introduction of duct burner for supplementary firing. The results show that between 490 and 526, the percentage increase in the overall heat absorbed in the HRSG is 37.39%. It also show that for an increase in the exhaust gas mass flow by 80 kg/s, the steam generation increase by 19.29% and 18.18% for the low and high pressure levels respectively. The overall result indicates an improvement in the HRSG energy efficiency and steam generation. As the exhaust gas mass flow and temperature increases, the steam generation and system effectiveness greatly improved under the various considerations, which satisfy the research objective.

Cite this paper

Adumene, S. and Lebele-Alawa, B. (2015) Performance Optimization of Dual Pressure Heat Recovery Steam Generator (HRSG) in the Tropical Rainforest. Engineering, 7, 347-364. doi: 10.4236/eng.2015.76031.

Conflicts of Interest

The authors declare no conflicts of interest.

References

[1] Casarosa, F., Donatin, C. and Franco, A. (2004) Thermoeconomic Optimization of Heat Recovery Steam Generator Operating Parameters for Combined Plant. Energy, 29, 389-413.
http://dx.doi.org/10.1016/S0360-5442(02)00078-6
[2] Lebele-Alawa, B.T., Hart, H.T., Ogaji, S.O.T. and Probert, S.D. (2008) Rotor-Blades’ Profile Influence on a Gas Turbine’s Compressor Effectiveness. Applied Energy, 85, 494-505.
http://dx.doi.org/10.1016/j.apenergy.2007.12.001
[3] Lebele-Alawa, B.T. (2010) Axial Thrust Responses due to a Gas Turbine’s Rotor Blade Distortions Journal of Engineering Physics and Thermophysics, 83, 991-994.
http://dx.doi.org/10.1007/s10891-010-0423-2
[4] Lebele-Alawa, B.T. and Egwanwo, V. (2012) Numerical Analysis of the Heat Transfer in Heat Exchangers. International Journal of Applied Science and Technology, 2(4), 60-64.
[5] Ganapathy, V. (2001) Optimize Energy Efficiency of the Heat Recovery Steam Generator. Power Engineering Article, 105.
http://www.power-eng.com/articles/print/volume-
[6] Ongiro, A., Ugursal, V.I., Al Taweel, A.M. and Walker, J.D. (1997) Modeling of Heat Recovery Steam Generator Performance. Applied Thermal Engineering, 16, 427-444.
http://dx.doi.org/10.1016/S1359-4311(96)00052-X
[7] Franco, A. and Russo, A. (2002) Combined Cycle Plant Efficiency Increase Based on the Optimization of Heat Recovery Steam Generator Operating Parameter. International Journal of Thermal Science, 41, 841-850.
http://dx.doi.org/10.1016/s1290-0729(02)01378-9
[8] Reddy, B.V., Ramkiran, G., Kumar, K.A. and Nag, P.K. (2002) Second Law Analysis of a Waste Heat Recovery Steam Generator. International Journal of Heat and Mass Transfer, 45, 1807-1814.
http://dx.doi.org/10.1016/S0017-9310(01)00293-9
[9] Subhramanyam, N., Rajaram, S. and Kamalnathan, N. (1995) HRSGs for Combined Cycle Power plants. Heat Recovery System & CHP, 15, 153-161.
http://dx.doi.org/10.1016/0890-4332(95)90022-5
[10] Dumont, M.N. and Heyen, G. (2004) Mathematical Modeling and Design of an Advanced Once through Heat Recovery Steam Generator. Computers and Chemical Engineering, 28, 651-660.
http://dx.doi.org/10.1016/j.compchemeng.2004.02.034
[11] Valdés, M., Durán, M.D. and Rovira, A. (2003) Thermoeconomic Optimist of Combined Cycle Gas Trubine Power Plants Using Genetic Algorithms. Applied Thermal Engineering, 23, 2168-2180.
http://dx.doi.org/10.1016/S1359-4311(03)00203-5
[12] Mohammad, T.M., Pouria, A., Abdolsaeid, G.K. and Mohammad, N.M.J. (2012) Exergetic and Economic Evaluation of the Effect of HRSG Configurations on the Performance of Combined Cycle Power Plants. Journal of Energy Conversion and Management, 58, 47-58.
[13] Attala, L., Facchini, B. and Ferrara, B. (2001) Thermo Economic Optimization Method as Design Tool in Gas Steam Combined Plant Realisation. Energy Conversation and Management, 42, 2163-2172.
http://dx.doi.org/10.1016/S0196-8904(00)00129-1
[14] Bassily, A.M. (2007) Analysis and Cost Optimization of the Triple-Pressure Steam-Reheat Gas Reheat Gas-Recuperated Combined Power Cycle. International Journal of Energy Research, 32, 116-135.
http://dx.doi.org/10.1002/er.1338
[15] Srinivas, T. (2009) Study of a Deaerator Location in Triple Pressure—Reheat Combined Power Cycle. Energy, 34, 1364-1371.
http://dx.doi.org/10.1016/j.energy.2009.05.034
[16] Mohagheghi, M. and Shayegan, J. (2009) Thermodynamic Optimization of Design Variable and Heat Exchanger Layout in HRSGs for CCGT, Using Genetic Algorithm. Applied Thermal Engineering, 29, 290-298.
http://dx.doi.org/10.1016/j.applthermaleng.2008.02.035
[17] Sun, Z.X., Gao, L., Wang, J.F. and Dai, Y.P. (2012) Dynamic Optimal Design of Power Generation System Utilizing Industrial Waste Heat Considering Parameter Fluctuations of Exhaust Gas. Energy, 44, 1035-1043.
http://dx.doi.org/10.1016/j.energy.2012.04.043
[18] Manassaldi, J.I. and Scenna, N.J. (2011) Optimal Synthesis and Design of Heat Recovery Steam Generation (HRSG) via Mathematical Programming. Energy, 36, 475-485.
http://dx.doi.org/10.1016/j.energy.2010.10.017
[19] Alus, M.M. and Petrovic, M.V. (2012) Optimization of Parameters for Heat Recovery Steam Generator (HRSG) in Combined Cycle Plants. Thermal Science, 16, 901-914.
http://dx.doi.org/10.2298/TSCI120517137A
[20] Ghazi, M., Ahmadi, P., Stotoodeh, A.F. and Taherkhani, A. (2012) Modeling and Thermo-Economic Optimization of Heat Recovery Heat Exchanger Using a Multimodal Genetic Algorithm. Energy Conservation and Management, 58, 149-156.
http://dx.doi.org/10.1016/j.enconman.2012.01.008
[21] Vytla, V.V.S.K. (2005) Thesis on CFD Modeling of Heat Recovery Steam Generator and Its Components Using Fluent. College of Engineering, University of Kentucky, Lexington.
[22] Lebele-Alawa, B.T. and Asuo, J.M. (2011) Exergy Analysis of Kolo Creek Gas Turbine Plant. Canadian Journal of Mechanical Science and Engineering, 2, 172-184.
[23] Lebele-Alawa, B.T. and Jo-Appah, V. (2015) Thermodynamic Performance Analysis of a Gas Turbine in an Equatorial Rain Forest Environment. Journal of Power and Energy Engineering, 3, 11-23.
http://dx.doi.org/10.4236/jpee.2015.31002
[24] Ahmadi, P., Hajadollahi, H. and Dincer, I. (2011) An Exergy-Based Multi-Objective Optimization of a Heat Recovery Steam Generator (HRSG) in a Combined Cycle Power Plant (CCPP) Using Evolutionary Algorithm. International Journal of Green Energy, 8, 44-64.
http://dx.doi.org/10.1080/15435075.2010.529779
[25] Ahmadi, P. and Dincer, I. (2011) Thermodynamic Analysis and Thermoeconomic Optimization of a Dual Pressure Combined Cycle Power Plant with a Supplementary Firing Unit. Energy Convers Manage, 52, 296-308.
http://dx.doi.org/10.1016/j.enconman.2010.12.023

  
comments powered by Disqus

Copyright © 2020 by authors and Scientific Research Publishing Inc.

Creative Commons License

This work and the related PDF file are licensed under a Creative Commons Attribution 4.0 International License.