Document Type : Research Paper


1 Department of Mechanical Engineering, University of Benin, Benin City, Nigeria.

2 Department of Production Engineering, University of Benin, Edo State, Nigeria.


The aim of this study was to analyze the performance of Omotosho Phase II gas turbine power plant for improved performance. To obtain the required output performance of the gas turbine power plant, operation data from years of 2013 to 2016 was collected from Omotosho Phase II gas turbine power plant in Ondo State, Nigeria. ASPEN HYSYS 2016 version was used to create two models, with one representing Omotosho Phase II gas turbine power plant with fogging unit incorporated while the other represented the power plant without fogging unit. The data was fed as input variables into the models in ASPEN HYSYS 2016 version which simulated the power plant process Specific Fuel Consumption (SFC) obtained from the power plant simulation when fogging is not incorporated was 0.199 kg/kwh, whereas, SFC of the plant with fogging was 0.179 kg/kwh. Thermal efficiency of 43.93% was obtained from the result of the simulated power plant with fogging system, whereas, thermal efficiency of 39.39% obtained from the result of the simulated power plant without fogging system. Net power of 131 MW was obtained from the simulation of the power plant with fogging system while net power of 117.46 MW was obtained when the plant operates without fogging system installed. For the compressor work, 82 MW/h was obtained from the simulation of the power plant with fogging system, whereas, 112.11 MW/h was obtained from the simulation of the power plant without fogging system. Furthermore, turbine work of 213 MW/h were obtained from the simulation of the power plant operating with fogging system while turbine work of 229.57 MW/h was obtained from the power plant without fogging system. This indicates that the incorporation of fogging system into Omotosho Phase II gas turbine power plant is economically viable in terms of fuel consumption, efficiency, power requirement, and GHG emissions compared to operation of the power plant without fogging system.


Main Subjects

[1]     Rahman, M. M., Ibrahim, T. K., & Abdalla, A. N. (2011). Thermodynamic performance analysis of gas-turbine power-plant. International journal of physical sciences6(14), 3539-3550.
[2]     Orhorhoro, E. K., & Orhorhoro, O. W. (2016). Simulation of air inlet cooling system of a gas turbine power plant. ELK Asia pacific journal of applied thermal engineering, 1(2), 2394-0433.
[3]     Orhorhoro, E. K., Achimnole, E. N., Onogbotsere, M. O., & Oghoghorie, O. (2017). Simulation of gas turbine power plant using high pressure fogging air intake cooling system. European journal of advances in engineering and technology4(9), 691-696.
[4]     Petron, G., Frost, G., Miller, F. R., Hirsch, A. I., Montzka, S. A., Karion, A., Trainer, M., Sweeney, C., Andrews, A. E., Miller, L., Kofler, J., Amnon, B., Dlugokencky, E. J., Laura, P., Charles, T. M., Thomas, B. R., Carolina, S., William, K., Lang, P. M., Conway, T., Novelli, P., Masarie, K., Hall, B., Guenther, D., Kitzis, D., Miller, J., Welsh, D., Wolfe, D., Neff, W., & Tans, P. (2012). Hydrocarbon emissions characterization in the colorado front range: a pilot study. Journal of geophysical research, 117 (D04304), 1-19.
[5]     Eludoyin, O. M., & Adelekan, I. O. (2013). The physiologic climate of Nigeria. International journal of biometeorology57(2), 241-264.
[6]     Ikpe, A., Efe-Ononeme, O., & Ariavie, G. (2018). Thermo-structural analysis of first stage gas turbine rotor blade materials for optimum service performance. International journal of engineering and applied sciences10(2), 118-130.
[7]     Efe-Ononeme, O. E., Aniekan, I. K. P. E., & Ariavie, G. O. (2018). Modal analysis of conventional gas turbine blade materials (Udimet 500 and IN738) for industrial applications. Journal of engineering technology and applied sciences3(2), 119-133.
[8]     Nasser, A. E., & El-Kalay, M. A. (1991). A heat-recovery cooling system to conserve energy in gas-turbine power stations in the Arabian Gulf. Applied energy38(2), 133-142.
[9]     Kim, Y. S., Lee, J. J., Kim, T. S., & Sohn, J. L. (2011). Effects of syngas type on the operation and performance of a gas turbine in integrated gasification combined cycle. Energy conversion and management52(5), 2262-2271.
[10] Kaviri, A. G., Jaafar, M. N. M., & Lazim, T. M. (2012). Modeling and multi-objective exergy based optimization of a combined cycle power plant using a genetic algorithm. Energy conversion and management58, 94-103.
[11] Meher-Homji, C. B., & Mee, T. R. (1995). Gas turbine augmentation by fogging of inlet air. Proceeding of the 28thTurbomachinery symposium. Houston Texas.
[12] Shi, X., Agnew, B., Che, D., & Gao, J. (2010). Performance enhancement of conventional combined cycle power plant by inlet air cooling, inter-cooling and LNG cold energy utilization. Applied thermal engineering30(14-15), 2003-2010.
[13] Ibrahim, T. K., Rahman, M. M., & Abdalla, A. N. (2011). Gas turbine configuration for improving the performance of combined cycle power plant. Procedia engineering15, 4216-4223.
[14] Farzaneh-Gord, M., & Deymi-Dashtebayaz, M. (2011). Effect of various inlet air cooling methods on gas turbine performance. Energy36(2), 1196-1205.
[15] dos Santos, A. P. P., Andrade, C. R., & Zaparoli, E. L. (2012). Comparison of different gas turbine inlet air cooling methods. World academy of science, engineering and technology61, 40-45.
[16] Alhazmy, M. M., & Najjar, Y. S. (2004). Augmentation of gas turbine performance using air coolers. Applied thermal engineering24(2-3), 415-429.
[17] Rogers, G., & Mayhew, Y. (1992). Engineering thermodynamics work and heat transfer. Prentice-Hall.
[18] Oyedepo, S. O., & Kilanko, O. (2014). Thermodynamic analysis of gas turbine power plant modelled with an evaporative cooler. 2012 international conference on clean technology and engineering management (ICCEM 2012).  Mechanical Engineering, Covenant University, Ota, Nigeria.
[19] El-Wakil, M.M. (1985). Power plant technology. McGraw-Hill Company Inc: London.
[20] Touloukian, Y. S., & Makita, T. (1970). Thermophysical properties of matter-the TPRC data series. volume 6. specific heat-nonmetallic liquids and gases. Thermophysical and electronic properties information analysis center lafayette in.
[21] Reisel, J. R. (2015). Principles of engineering thermodynamics. Ist Edition. Cengage Learning Inc, Florence, USA.
[22] Essienubong, I. A., Ikechukwu, O., Ebunilo, P. O., & Ikpe, E. (2016). Material selection for high pressure (HP) turbine blade of conventional turbojet engines. American journal of mechanical and industrial engineering1(1), 1-9.
[23] Ikpe, A. E., Owunna, I., Ebunilo, P. O., & Ikpe, E. (2016). Material selection for high pressure (HP) compressor blade of an aircraft engine. International journal of advanced materials research2(4), 59-65.
[24] Eastop, T. D. and McConkey, A. (2004). Applied thermodynamics for engineering technologist. Fourth Edition, Pearson Education Ltd. 
[25] Nurprihatin, F., Octa, A., Regina, T., Wijaya, T., Luin, J., & Tannady, H. (2019). The extension analysis of natural gas network location-routing design through the feasibility study. Journal of applied research on industrial engineering6(2), 108-124.
[26] Rahman, M., Tahiduzzaman, M., Kundu, R., Juwel, S. M., & Karim, M. (2018). Waste identification in a pipe manufacturing industry through lean concept–A case study. Journal of applied research on industrial engineering5(4), 306-323.
[27] Saracoglu, B. O., & De Simón Martín, M. (2018). Initialization of a multi-objective evolutionary algorithms knowledge acquisition system for renewable energy power plants. Journal of applied research on industrial engineering5(3), 185-204.