Energy, Exergy, and Economic Analyses of a Combined Heat and Power Generation System with a Gas Turbine and a Horizontal Axis Wind Turbine

Document Type : Research Article


Department of Mechanical Engineering, Shahrood Branch, Islamic Azad University, Shahrood, I.R. IRAN


Using the Combined Heat and Power (CHP) systems is known as one of the most effective ways to raise the power coefficient and reduce fuel consumption and operational costs. In this study, a CHP system with the prime movers of a gas turbine and a horizontal axis wind turbine under the strategy of providing electric charge has been investigated based on the first and second laws of thermodynamics. This study aims to evaluate the effect of a wind turbine on the CHP system. The results show that the proposed CHP system has significant advantages compared to the CHP system working without the wind turbine. The best operating condition for the wind turbine is at the wind speed of 12 m/s, a pitch angle of 5ο, and a tip speed ratio of 3. Moreover, the effects of the wind speed and tip speed ratio on the exergy efficiency of the total system become considerable when the gas turbine works at high-pressure ratios (more than 10) and the combustion chamber temperature is below 1250 οC. Also, it is shown this integrated system can reduce operational costs and fuel consumption by 55 % and 60%, respectively. Finally, regarding the interest rate, the payback period will be equal to 5.4 years.


Main Subjects

[1] Ahmadi M.H., Ahmadi M.A., Bayat R., Ashouri M., Feidt M., Thermo-Economic Optimization of Stirling Heat Pump by Using Non-Dominated Sorting Genetic Algorithm, Energy Convers. Manag., 91: 315–322 (2015).
[3] Javadi M.A., Hoseinzadeh S., Ghasemiasl R.,
Heyns P.S., Chamkha A.J., Sensitivity Analysis of Combined Cycle Parameters on Exergy, Economic, and Environmental of a Power Plant, J. Therm. Anal. Calorim., 139: 519–525 (2020).
[4] Caruso C., Catenacci G., Marchettini N., Principi I., Tiezzi E., Emergy Based Analysis Of Italian Electricity Production System, J. Therm. Anal. Calorim., 265–272 (2001).
[5] Naeimi A., Bidi M., Ahmadi M.H., Kumar R., Sadeghzadeh M., Alhuyi Nazari M., Design and Exergy Analysis of Waste Heat Recovery System and Gas Engine for Power Generation in Tehran Cement Factory, Therm. Sci. Eng. Prog., 9: 299–307 (2019).
[6] Ahmadi M.H., Ghazvini M., Sadeghzadeh M., Alhuyi Nazari M., Ghalandari M., Utilization of Hybrid Nanofluids in Solar Energy Applications: A Review, Nano-Structures and Nano-Objects., 20: 100386 (2019).
[7] Ansarinasab H., Mehrpooya M., Sadeghzadeh M., An Exergy-Based Investigation on Hydrogen Liquefaction Plant-Exergy, Exergoeconomic, and Exergoenvironmental Analyses, J. Clean. Prod., 210: 530–541 (2019).
[9] Naseri A., Bidi M., Ahmadi M.H., Saidur R., Exergy Analysis of a Hydrogen and Water Production Process by a Solar-Driven Transcritical CO2 Power Cycle with Stirling Engine, J. Clean. Prod., 158: 165–181 (2017).
[10] Nouri M., Namar M.M., Jahanian O., Analysis of a developed Brayton Cycled CHP System Using ORC and CAES Based on First and Second Law of Thermodynamics, J. Therm. Anal. Calorim., 135: 1743–1752 (2019).
[11] Jamalabadi M.Y.A., Carbon Monoxide Reduction in Solid Oxide Fuel Cell–Mini Gas Turbine Hybrid Power System, J. Therm. Anal. Calorim., 135: 1871–1880 (2019).
[12] Jamalabadi M.Y.A., Numerical Simulation of Carbon Dioxide Sorption Circulating Fluidized Bed Used in Solid Oxide Fuel Cell, J. Therm. Anal. Calorim., 139: 2565–2575 (2020).
[13] Bagherzadeh S.A., Ruhani B., Namar M.M., Alamian R., Rostami S., Compression Ratio Energy and Exergy Analysis of a Developed Brayton-Based Power Cycle Employing CAES and ORC, J. Therm. Anal. Calorim., 139: 2781–2790 (2020).
[14] Senturk Acar M., Arslan O., Energy and Exergy Analysis of Solar Energy-Integrated, Geothermal Energy-Powered Organic Rankine Cycle, J. Therm. Anal. Calorim., 137: 659–666 (2019).
[15] Ahmadi M.H., Alhuyi Nazari M., Sadeghzadeh M., Pourfayaz F., Ghazvini M., Ming T., Meyer J.P., Sharifpur M., Thermodynamic and Economic Analysis of Performance Evaluation of All the Thermal Power Plants: A Review, Energy Sci. Eng., 7: 30–65 (2019).
[16] (5) Use of bioethanol in a Gas turbine Combustor | Request PDF, (n.d.).
[17] Cavarzere A., Morini M., Pinelli M., Spina P.R., Vaccari A., Venturini M., "Experimental Analysis of a Micro Gas Turbine Fuelled with Vegetable Oils from Energy Crops", in: Energy Procedia, Elsevier, pp. 91–100 (2014).
[19] Kaushik S.C., Singh O.K., Estimation of Chemical Exergy of Solid, Liquid and Gaseous Fuels Used in Thermal Power Plants, J. Therm. Anal. Calorim., 115: 903–908 (2014).
[20] Namar M.M., Jahanian O., Energy and Exergy Analysis of a Hydrogen-Fueled HCCI Engine, J. Therm. Anal. Calorim., 137: 205–215 (2019).
[21] Kalbasi R., Izadi F., Talebizadehsardari P., Improving Performance of AHU Using Exhaust Air Potential by Applying Exergy Analysis, J. Therm. Anal. Calorim., 139: 2913–2923 (2020).
[22] Mohammadi A., Kasaeian A., Pourfayaz F., Ahmadi M.H., Thermodynamic Analysis of a Combined Gas Turbine, ORC Cycle and Absorption Refrigeration for a CCHP System, Appl. Therm. Eng., 111: 397–406 (2017).
[23] Ahmadi M.H., Sayyaadi H., Mohammadi A.H., Barranco-Jimenez M.A., Thermo-Economic Multi-Objective Optimization of Solar Dish-Stirling Engine by Implementing Evolutionary Algorithm, Energy Convers. Manag., 73: 370–380 (2013).
[24] Kim S., Lee S., Ryu J., Spitsyn V.E., “Development of the 5MW Power Generation Gas Turbine Engine”, in: Proc. ASME Turbo Expo, American Society of Mechanical Engineers Digital Collection, pp. 591–598 (2011).
[26] Khanjari A., Mahmoodi E., Sarreshtehdari A., Chahartaghi M., Modelling of Energy and Exergy Efficiencies of a Horizontal Axis Wind Turbine Based on the Blade Element Momentum Theory at Different Yaw Angles, Int. J. Exergy., 27: 437–459 (2018).
[27] e. a. C. o. C. t. W. Darrow K, No Title, US Environ. Prot. Agency, 5–6 (2015).
[28] Li Q., Kamada Y., Maeda T., Murata J., Yusuke N., Effect of Turbulence on Power Performance of a Horizontal Axis Wind Turbine In Yawed and No-Yawed Flow Conditions, Energy, 109: 703–711 (2016).
[30] Korlu M., Pirkandi J., Maroufi A., Thermodynamic Analysis of a Gas Turbine Cycle Equipped with a Non-Ideal Adiabatic Model for a Double Acting Stirling Engine, Energy Convers. Manag., 147: 120–134 (2017).
[32] Sanaye S., Meybodi M.A., Shokrollahi S., Selecting the Prime Movers and Nominal Powers In Combined Heat and Power Systems, Appl. Therm. Eng., 28: 1177–1188 (2008).
[37] A Review on J.G. Speight, “The Exergy Method: Technical and Ecological Applications,” Energy Sources. 27: 1099–1101 (2005).
[38] Chahartaghi M., Kharkeshi B.A., Performance Analysis of a Combined Cooling, Heating and Power System with PEM Fuel Cell as a Prime Mover, Appl. Therm. Eng., 128: 805–817 (2018).
[39] Ahmadi M.H., Ahmadi M.A., Mellit A., Pourfayaz F., Feidt M., Thermodynamic Analysis and Multi Objective Optimization of Performance of Solar Dish Stirling Engine by the Centrality of Entransy and Entropy Generation, Int. J. Electr. Power Energy Syst., 78: 88–95 (2016).
[40] “The Exergy Method of Thermal Plant Analysis”, Elsevier, (1985).
[41] Bluestein M., Zecher J., A New Approach to an Accurate Wind Chill Factor, Bull. Am. Meteorol. Soc., 80: 1893–1899 (1999).;2
[42] Boojari M., Mahmoodi E., Khanjari A., Wake Modelling Via Actuator-Line Method for Exergy Analysis in Open FOAM, Int. J. Green Energy., 16: 797–810 (2019).
[43] Mahmoodi E., Schaffarczyk A.P., “Actuator Disc Modeling of the MEXICO Rotor Experiment”, in: Springer Berlin Heidelberg, pp. 29–34 (2014).
[44] Song Y., Perot J.B., CFD Simulation of the NREL Phase VI Rotor, Wind Eng., 39 (2015).
[45] Khanjari A., Sarreshtehdari A., Mahmoodi E., Modeling of Energy and Exergy Efficiencies of a Wind Turbine Based on the Blade Element Momentum Theory Under Different Roughness Intensities, J. Energy Resour. Technol., 139: 022006 (2016).
[46] Khanjari A., Mahmoodi E., Sarreshtehdari A., Effect of Stall Delay Model on Momentum Distribution of Wind Turbine’s Blade under Yaw Condition: Compared to MEXICO Experiment, Iranica Journal of Energy & Environment, 9: 16–23 (2018).
[47] Martin O.L. Hansen, “Aerodynamics of Wind Turbines”, 2nd ed., (2008).
[48] Glauert H., “Airplane Propellers”, Division L. Julius Springer, New York, (1935).
[49] Mahmoodi E., Jafari A., Peter Schaffarczyk A., Keyhani A., Mahmoudi J., A New Correlation on the MEXICO Experiment Using a 3D Enhanced Blade Element Momentum Technique, Int. J. Sustain. Energy., 1–13 (2013).
[50] Wilson R., "Fundamental Concepts in Wind Turbine Engineering", in: Spera, D.A, 2 ed, ASME, New York, 2009. (Accessed December 22, 2015).
[52] Moriarty P., Hansen A., AeroDyn Theory Manual, National Renewable Energy Laboratory, Colorado, (2005).
[53] Chaviaropoulos D.P.K., Dr., Head of the Research and Development Department and M. O. L. Hansen, Investigating Three-Dimensional and Rotational Effects on Wind Turbine Blades by Means of a Quasi-3D Navier-Stokes Solver, J. Fluids Eng., 122: 330–336 (2000).
[54] Lin Y.T., Chiu P.H., Huang C.C., An Experimental and Numerical Investigation on the Power Performance of 150 kW Horizontal Axis Wind Turbine, Renew. Energy., 113: 85–93 (2017).
[55] Tavakoli Dastjerd F., Ghafuoryan M.M., Shakib S.E., Tech Economic Optimization of CCHP System with Rely the Time Value of Money, in Payback Period, Modares Mech. Eng., 99: 254–260 (2015) [In Persian].
[58] Tavakoli Dastjerd F., Ghafuoryan M.M., Shakib S.E., Comparison of Selection Effect Environmental Optimization and Multi-Criteria Optimizations, Energy, Econ. Environ. Perform. CCHP Syst. [In Persain], 69–77 (2015).