Design and Optimization of A Gas Turbine Waste Heat Recovery System
Keywords:
Waste heat, Heat recovery, Steam turbine and generator, Energy efficiencyAbstract
In this paper a waste heat recovery system was designed and evaluated for Olorunsogo-I Thermal Power Plant. The heat recovery steam generator (HRSG) system for eight turbine units of the plant was used to recover maximum possible waste heat from the exhaust gas and selected a suitable steam turbine according to the heat demand capacity. This generated additional power and thus converted the plant into a Combined Cycle Gas Turbine (CCGT) plant. The HRSG was modeled and optimized using the Engineering Equation Solver (ESS) software. This determined the maximum possible power output and the optimum steam pressure. Technical and practical limitation parameters - pinch point temperature, approach point temperature and sulphur dew point – in the stock were considered. The estimated maximum power output of the steam turbine is 3.827 MW. A steam turbine with a rated power output of 3.69 MW (at 12.7 bar inlet pressure) was selected as the optimum steam turbine for the desired conditions, utilizing 13284 MJ/h of recovered heat energy which is equivalent to 38.73% of total waste heat energy (34299.36 MJ/h) in the flue gas per hour. This study produced additional 29.52 MW power output to the plant per hour basis.
References
Bae, S., Heo, H., Park, J., Lee, H. and kim, C. (2013): Performance Design of Low Temperature Condenser for Waste Heat Recovery System. SAE Technical Paper 2013-01-0046.
Bari, S. (2017):An Experimental Study of a Waste Heat Recovery System Connected to a Diesel-Gen-Set. SAE Technical Paper 2017-01-0123.
Butcher, C. J. (2007): Second Law Analysis of a Waste Heat Recovery Based on Power Generation System, International Journal of Heat and Mass Transfer pp 2355-2363.
Charles, S. and Christopher, D. (2014): “Combining a Diesel Particulate Filter and Heat Exchanger for Waste Heat Recovery and Particulate Matter Reductionâ€.SAE Technical Paper 2014-01-0673.
Ganapathy, V. (1996): Heat Recovery Steam Generators Understand the Basics. ABCO Industries. Chemical Engineering Progress.
Hewavitarane, D. and Yoshiyama, S. (2015): The Fundamentals Governing the Operation and Efficiency of a Superheated Liquid Flash, Boiling (S.L.F.B) Cycle Powered Reciprocating Engine for Automotive Waste Heat Recovery. SAE Paper 2015-01-1966, JSAE 20159063.
Karlsson, M., Abom, M., Lalit, M. and Glav, R. (2016):A Note on theApplicability of Thermo-Acoustic Engines for Automotive Waste Heat Recovery.SAE Int. J. Mater. Manf. 9(2).
Latz, G., Anderson, S. and Munch, K. (2013):SelectingAn Expansion Machine for Vehicle Waste-Heat Recovery Systems Based on the Rankine Cycle.SAE Technical Paper 2013-01-0552.
Li, D., Xu, H., Wang, L., Fan, Z. Dou, W. and Yu, X. (2014):Simulation and Analysis of a Hybrid Pneumatic Engine Based on In-Cylinder Waste Heat Recovery.SAE Technical Paper 2014-01-2355.
Liang, Y. (2016):TheoreticalAnalysis of a Novel Electricity-Cooling Cogeneration System Based on Waste Heat Recovery of Marine Engine.SAE Technical Paper 2016-01-0209.
Liu, P., Shu, G., Tian, H., Wang, X. and Jing, D.(2017):Fluid Selection and Thermodynamic Analysis of an Electricity-Cooling Cogeneration System Based on Waste Heat Recovery from Marine Engine, SAE Technical paper 2017-01-0159.
Magnetto, D., DeBoer, R. and Taklanti A. (2011):A Mobile Air Conditioning System Operated by the Engine Waste Heat.SAE Technical Paper 2011-01-0135.
NPTFPP (2015):Nigerian Presidential Task Force on Power Publication available from http://en.wikipedia.org/wiki/List_of_power_stations_in_Nigeria#Natural_gas.
NPTFPP (2016):Nigerian Presidential Task Force on Power Publication available fromhttp://en.wikipedia.org/wiki/List_of_power_stations_in_Nigeria#Natural_gas.
Xiao, L., He, T., Tan, G., Huang, B. and Ping, X. (2017): The TEG Hot-End Heat Capacity’s Effect on the Power Output Stability for Harvesting Automobile Exhaust Energy. SAE Technical Paper 2017-01-0160.
Saxena, S. and Ahmed, M. (2017): Automobile Exhaust Gas Heat Energy Recovery Using Stirling Engine: Thermodynamic Model. SAE Technical Paper 2017-26-0029. https://doi.org/10.4271/2017-26-0029.
Zhang, Z., Tan, G., Yang, M., Yang, Z., and Han, M. (2016): Hydraulic Retarder Waste Heat Recovery Based on the Organic Rankine Cycle. SAE Technical Paper 2016-01-8079.
Downloads
Published
Issue
Section
License
Copyright
With the submission of a manuscript, the corresponding author confirms that the manuscript is not under consideration by another journal. With the acceptance of a manuscript, the Journal reserves the exclusive right of publication and dissemination of the information contained in the article. The veracity of the paper and all the claims therein is solely the opinion of the authors not the journal.