A thermodynamic model for exergetic performance and optimization of a solar and biomass-fuelled multigeneration system

Document Type : Research Paper


Graduate Faculty of Environment, University of Tehran, Tehran, Iran


Integrated energy systems utilizing renewable sources are sustainable and environmentally substitutes for conventional fossil-fired energy systems. A new multigeneration plant with two inputs, such as biomass and solar energy, and four useful outputs, such as cooling, heating, power, and distilled water, is presented and investigated in this paper. The proposed system includes evacuated tube solar collectors, biomass burners, the organic rankine cycle (ORC), absorption chillers, heaters, and a multi-effect desalination system (MED). The results showed that the proposed system can produce 802.5 kW for power, 10391 kW for heating, 5658 kW for cooling, and 9.328 kg/s for distilled water. The energy efficiency of the system is 61%, while the exergy efficiency is 7% and the main sources of exergy destructions are biomass burner, evacuated tube solar collectors, and the vapour generator. Exergy optimization is carried out to find the optimum point of the system.


[1]  Ahmadi P., Dincer I., and Rosen M.A., Thermodynamic Modeling and Multi-Objective Evolutionary-Based Optimization of a New Multigeneration Energy System,Energy Conversion and Management (2013) 76: 282-300.
[2]  Dinçer İ. and Zamfirescu C., Sustainable Energy Systems and Applications, Springer Science & Business Media (2011) ISBN:0387958614.
[3]  Ozturk M., Dincer I., Thermodynamic Assessment of an Integrated Solar Power Tower and Coal Gasification System for Multi-Generation Purposes,Energy Conversion and Management (2013) 76:1061-1072.
[4] Ozturk M. Dincer I., Thermodynamic Analysis of a Solar - Based Multi-Generation, System with Hydrogen Production,Applied Thermal Engineering, (2013) 51(1): 1235-1244.
[5]  Dincer I., Zamfirescu C., Renewable‐Energy‐Based Multigeneration Systems,International Journal of Energy Research, (2012) 36(15): 1403-1415.
[6]  Rubio-Maya C., Uche-Marcuello J., Martínez-Gracia A., Bayod-Rújula A.A., Design Optimization of a Polygeneration Plant Fuelled by Natural Gas and Renewable Energy Sources,Applied Energy (2011) 88(2):449-457.
[7]  Minciuc E., Le Corre O., Athanasovici V., Tazerout M., Bitir I., Thermodynamic Analysis of Tri-Generation with Absorption Chilling Machine,Applied Thermal Engineering, (2003) 23(11):1391-1405.
[8]  Ahmadi P., Rosen M.A., Dincer I., Multi-Objective Exergy-Based Optimization of a Polygeneration Energy System Using an Evolutionary Algorithm,Energy (2012) 46(1): 21-31.
[9]  Zamfirescu C., Naterer G., Dincer I., Upgrading of Waste Heat for Combined Power and Hydrogen Production with Nuclear Reactors,Journal of Engineering for Gas Turbines and Power (2010) 132(10):102911.
[10] Ratlamwala T., Dincer I., Gadalla M., Performance Analysis of a Novel Integrated Geothermal-Based System for Multi-Generation Applications,Applied Thermal Engineering (2012) 40:71-79.
[11] Ozlu S., Dincer I., Development and Analysis of a Solar and wind Energy Based Multigeneration System,Solar Energy (2015) 122:1279-1295.
[12] Werther J., Saenger M., Hartge E.-U., Ogada T., Siagi Z., Combustion of Agricultural Residues,Progress in Energy and Combustion Science (2000) 26(1):1-27.
[13] Cortez L., Gómez E., A Method for Exergy Analysis of Sugarcane Bagasse Boilers,Brazilian Journal of Chemical Engineering (1998) 15.
[14] Bhattacharya A., Manna D., Paul B., Datta A., Biomass Integrated Gasification Combined Cycle Power Generation with Supplementary Biomass Firing, Energy and Exergy Based Performance Analysis,Energy (2011) 36(5): 2599-2610.
[15] Agency I.S., www.amar.org.ir/.
[16] Frangopoulos C.A., Exergy, Energy System Analysis, and Optimization, Eolss 
Publishers (2009) ISBN:1848266162.
[17] Cengel A.Y., Boles M.A., Thermodynamics, An Engineering Approach, McGraw Hill, (2008).
[18] Petela R., Exergy of Undiluted Thermal Radiation,Solar Energy (2003) 74(6): 469-488.
[19] Wall G., Exergetics, (1998).
[20] Zamfirescu C., Dincer I., How Much Exergy One Can Obtain from Incident Solar Radiation?, Journal of Applied Physics (2009) 105(4): 044911.
[21] Boyaghchi F.A., Heidarnejad P., Thermodynamic Analysis and Optimisation of a Solar Combined Cooling, Heating and Power System for a Domestic Application, International Journal of Exergy (2015) 16(2):139-168.
[22] http://www.fchart.com, engineering equation solver (EES).
[23] Paul W. Stackhouse J., Ph.D. NASA Surface Meteorology and Solar Energy  (2013).
[24] Dincer I., Rosen M.A., Exergy, Energy, Environment and Sustainable Development, Newnes, (2012) ISBN:0080970907.
[25] Holland J.H., Adaptation in Natural and Artificial Systems, An Introductory Analysis with Applications to Biology, Control, and Artifical Intelligence, MIT Press, (1992).