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DOI:http://dx.doi.org/10.26855/jepes.2022.03.001

A Comparative Thermodynamic Analysis of the Rankine Cycle Using Various Organic Working Fluids

Date: March 28,2022 |Hits: 672 Download PDF How to cite this paper

Faith U. Babalola*, Taofeek M. Adelaja

Department of Chemical and Petroleum Engineering, University of Lagos, Lagos, Nigeria.

*Corresponding author: Faith U. Babalola

Abstract

A comparative thermodynamic analysis of the Organic Rankine Cycle (ORC) using various working fluids was done using models developed in this work with the ASPEN Plus software to determine the thermal and exergy efficiencies of the ORC when running on six selected promising working fluids. The process was designed for power generation using a low heat source of about 40oC. Two layouts were considered; one was a typical ORC while the other was an ORC with a recuperator for heat energy savings. The process was run with two temperature conditions of 30 degrees superheat and 30oC at the turbine inlet. Six working fluids; three wet (R-152a, R-134a, and R-32)) and three dry (R-600, R-600a and R-245fa) were selected based on their physical, chemical, environmental and economic criteria. The results showed that no single fluid perfectly met all requirements but in a trade-off, their overall performances at the turbine inlet temperature of 30oC were preferred and R-32 emerged as the best ranked followed by R-600a and then R-134a; next was R-152a then R-600 and lastly R-245fa.

References

[1] Smith, J. M., Van Ness, H. C., and Abbott, M. M. (2001). Introduction to chemical engineering thermodynamics. 6th Edition, McGraw-Hill, Boston.

[2] Realpe, A., Diaz-Granados, J. A., and Acevedo, M. T. (2012). Electricity generation and wind potential assessment in regions of Colombia. Dyna, 171, 116-122.

[3] Paul, T. (1991). The Naphtha Engine. GasEngine Magazine. Available at: https://www.gasenginemagazine.com/gas-engines/ engines-a-z/the-naphtha-engine/.

[4] Yunus, A. C. and Michael, A. B. (2011). Thermodynamics: An Engineering Approach. 7th Edition, Mc Graw Hill Publishers, New York.

[5] Calm, J. M. and Hourahan, G. C. (2011). Physical, Safety and Environmental data for current and alternative Refrigerants. Refrigeration for sustainable development (proceedings of the 23rd International Congress of Refrigeration, Prague, Czech Republic, 2011.08.21-26), International Institute of Refrigeration (IIR), Paris, France. Paris, France, 2, 888-909. http://www.hourahan.com/wp/wp-content/uploads/2010/08/2011-Physical-Safety-and-Environmental-Data2.pdf.

[6] Lyes, K. (2006). Thermodynamics II. 

[7] Tsatsaronis, G. and Cziesla, F. (2009). Exergy Balance and Exergetic Efficiency. In: Frangopoulos, C. A., Exergy, Energy System Analysis and Optimization. EOLSS Publishers Co. Ltd, Oxford, united Kingdom, 60-61.

[8] Szargut, J., Morris, D. R., and Steward, F. R. (1988). Exergy analysis of thermal, chemical, and metallurgical processes. Hemisphere Publishing Corporation, New York, USA.

[9] Caballero, E., Hoyos, L., Kafarov, V., and Barajas, C. (2014). Exergy Analysis Applied to Separation Processes in a FCC Plant Using Computational Models. Chemical Engineering Transactions, 39, 79-84.

[10] Dincer, I., Hussain, M. M., and Al-Zaharnah, I. (2003). Energy and exergy use in the industrial sector of Saudi Arabia. Power and Energy, 217(5), 481-492. doi: 10.1243/095765003322407539.  

[11] NIST. (2010). NIST reference fluid thermodynamic and transport properties database (REFPROP). v. 9.0. National Institute of Standards and Technology, Gaithersburg, M.

[12] Nouman, J. (2012). Comparative studies and analyses of working fluids for Organic Rankine Cycles – ORC. Msc Thesis. KTH School of Industrial Engineering and Management, Sweden.

[13] Yufei, H., Feng, X., and Wang, Y. (2016). Working fluid selection for Organic Rankine Cycle (ORC) considering the characteristics of waste heat sources. Industrial and Engineering Chemistry Research. American Chemical Society, Washington, D.C., USA, 55 (5), 1309-1321. doi: https://doi.org/10.1021/acs.iecr.5b02277.

[14] Tillner-Roth, R. and Yokozeki, A. (1997). An International Standard Equation of State for Difluoromethane (R-32) for Temperatures from the Triple Point at 136.34 K to 435 K and Pressures up to 70 MPa. Journal of Physical and Chemical Reference Data, 26(6), 1273-1328. Aip Publishing LLC, New York, United States.

[15] ASHRAE. (2017). Designation and safety classification of refrigerants. ANSI/ASHRAE Standard 34-2016.

How to cite this paper

A Comparative Thermodynamic Analysis of the Rankine Cycle Using Various Organic Working Fluids

How to cite this paper: Faith U. Babalola, Taofeek M. Adelaja. (2022) A Comparative Thermodynamic Analysis of the Rankine Cycle Using Various Organic Working Fluids. Journal of Electrical Power & Energy Systems6(1), 44-55.

DOI: http://dx.doi.org/10.26855/jepes.2022.03.001

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