Document Type: Original Article


1 SREE Department, University of Sharjah, Sharjah, United Arab Emirates.

2 Mechanical Engineering Department, School of Engineering, Australian College of Kuwait.


A thermodynamic analysis based on first law of thermodynamics of organic Rankine cycle (ORC) was presented to find out effect of organic fluid selection on the cycle efficiency and power output.Different configurations of ORCs with and without Internal Heat Exchanger (IHE) were used. The criteria for choosing the optimum working fluid were discussed and many different organic fluids were compared in terms of thermal efficiency and power output. The results showed that higher efficiencies were obtained for ORCs with IHE configuration, and the organic fluid R123 had the most favorable performance for which the thermal efficiency of ORC was 14.2 and 13.28 with and without IHE, respectively. Moreover, the work output of ORC cycle was about 50 kJ/kg which was the highest when using R123 as an organic fluid.


Main Subjects

[1] Khan, M. A., Khan, M.Z., Zaman, K., and Naz, L. (2014). Global estimates of energy Consumption and greenhouse gas emissions. Renewable and Sustainable Energy Reviews, Vol. 14, No. 29, pp. 336–344.

[2] Gielen, D., Boshell, F., Saygin, D., Bazilian, M. D., Wagner, N., and Gorini, R. (2019). The role of renewable energy in the global energy transformation. Energy Strategy Reviews, vol. 24, No. 38, pp. 50.

[3] El Haj Assad, M., Bani-Hani, E., and Khalil, M. (2017). Performance of geothermal power plants (single, dual, and binary) to compensate for LHC-CERN power consumption: comparative study. Geothermal Energy, Vol. 5, No. 1.

[4] Gielen, D., Boshell, F., Saygin, D., Bazilian, M. D., Wagner, N., and Gorini, R. (2019). The role of renewable energy in the global energy transformation. Energy Strategy Reviews, vol. 24, pp. 38-50.

[5] Islam, M. A., Hasanuzzaman, M., Rahim, N. A., Nahar, A., &Hosenuzzaman, M. (2014). Global Renewable Energy-Based Electricity Generation and Smart Grid System for Energy Security. The Scientific World Journal, 2014.

[6] Sadeghzadeh, M., Ahmadi, M., Kahani, M., et al. (2019). Smart modeling by using artificial intelligent techniques on thermal performance of flat‐plate solar collector using nanofluid. Energy science and engineering, Vol. 7, No. 5, pp. 1649-1658.

[7] Ghazvini, M., Sadeghzadeh, M., Ahmadi, M., Moosavi, S., and Pourfayaz, F. (2019). Geothermal energy use in hydrogen production: A review. Energy science and engineering, Vol. 43, No. 14, pp. 7823-7851.

[8] Ahmed, F., Al Amin, A.Q., Hasanuzzaman, M., and Saidur, R. (2013). Alternative energy resources in Bangladesh and future prospect. Renewable and Sustainable Energy Reviews, Vol. 25, pp. 698–707.

[9] El Haj Assad, M., Bani-Hani, E., Sedaghat, A., Al-Muhaiteeb, A., Khanafer, M., and Khalil, M. (2017). New pneumatic system for tidal energy conversion. Journal of Power and Energy Engineering, Vol. 4, pp. 20–27.

[10] Bani-Hani, E. (2017). Recent applications of biomass wastes in industry for environmental sustainability, Journal of Industrial Pollution Control, Vol. 33, No. 2, pp. 1622-1626.

[11] Dickson, M.H., and Fanelli, M. (2004). What is Geothermal Energy? CNR-Istituto di Geo- science e Georisorse, Pisa, Italy, 2004, pp. 1-61.

[12] El Haj Assad, M., Said, Z., Khosravi, A., Salameh, T., Albawab, M. Parametric study of geothermal parallel flow double-effect water-LiBr absorption chiller. 2019 Advances in Science and Engineering Technology International Conferences (ASET).

[13] El Haj Assad, M., Khosravi, A., Said, Z., Albawab, M., Salameh, T. Thermodynamic analysis of geothermal series flow double-efffect water/LiBr absorption chiller. 2019 Advances in Science and Engineering Technology International Conferences (ASET).

[14] Abdelkareem, M., El Haj Assad, M., Sayed, E., Soudan, B.Salman, M. (2018). Recent progress in the use of renewable energy sources to power water desalination plants. Desalination, Vol. 435, pp. 97-113.

[15] Mohammadi, A., Ahmadi, M.H., Bidi, M., Ghazvini, M., Ming, T. (2018). Exergy and economic analysis of replacing feedwater heaters in a Rankine cycle with parabolic trough collectors. Energy Reports, Vol. 4, pp. 243-251.

[16] Ghoreishi, S., Vakilabadi, M., Bidi, M., et al. (2019). Analysis, economical and technical enhancement of an organic Rankine cycle recovering waste heat from an exhaust gas stream. Energy science and engineering, Vol. 7, No. 1, pp. 230-254.

[17] Ahmadi, M.H., Nazari, M., Sadeghzadeh, M., et al.(2018). Thermodynamic and economic analysis of performance evaluation of all the thermal power plants: A review. Energy science and engineering, Vol. 7, No. 1, pp. 30-65.

[18] DiPippo, R. (2004). Second law assessment of binary plants generating power from low-temperature geothermal fluids. Geothermics, Vol. 33, pp. 565–86.

[19] Astolfi, M., Romano, M. C., Bombarda, P., andMacchi, E. (2014). Binary ORC (Organic Rankine Cycles) power plants for the exploitation of medium–low temperature geothermal sources – Part B: Techno-economic optimization. Energy, Vol. 66, pp. 435-446.

[20] Darvish, K., Ehyaei, M., Atabi, F., and Rosen, M. (2015). Selection of Optimum Working Fluid for Organic Rankine Cycles by Exergy and Exergy-Economic Analyses. Sustainability, Vol. 7, No. 11, pp. 15362-15383.

[21] Douvartzides, S., and Karmalis, I. (2016). Working fluid selection for the Organic Rankine Cycle (ORC) exhaust heat recovery of an internal combustion engine power plant. IOP Conference Series: Materials Science and Engineering, 161, 012087.

[22] Shokati, N., Ranjbar, F., and Yari, M. (2015). Exergoeconomic analysis and optimization of basic, dual-pressure and dual-fluid ORCs and Kalina geothermal power plants: A comparative study. Renewable Energy, Vol. 83, pp. 527-542.

[23] Zare, V. (2015). A comparative exergoeconomic analysis of different ORC configurations for binary geothermal power plants. Energy Conversion and Management, Vol. 105, pp. 127-138.

[24] Wang, H., Xu, J., Yang, X., Miao, Z., and Yu, C. (2015). Organic Rankine cycle saves energy and reduces gas emissions for cement production. Energy, Vol. 86, pp. 59-73.

[25] Yari, M. (2010), Exergetic analysis of various types of geothermal power plants. Renewable Energy, Vol. 35, pp. 112-121.

[26] Mosaffa, A., Mokarram, N. H., Farshi, L. G. (2017). Thermo-economic analysis of combined different ORCs geothermal power plants and LNG cold energy. Geothermics, Vol. 65, pp. 113-125.

[27] Tempesti, D., Manfrida, G., and Fiaschi, D. (2012). Thermodynamic analysis of two micro CHP systems operating with geothermal and solar energy. Applied Energy, vol. 97, pp. 609-617.

[28] Salman, M. (2017). Evaluating the Organic Ranike Cycle (ORC) for heat to power, Feasibility and parameter identification of the ORC cycle at different working fluid with district waste heat as a main source. Energy engineering.