In the present study, a dual-pressure organic Rankine cycle (DORC) driven
by geothermal hot water for electricity production is developed, investigated
and optimized from the energy, exergy and exergoeconomic viewpoint. A
parametric study is conducted to determine the effect of high-stage pressureand low-stage pressurevariation on the system thermodynamic and
exergoeconomic performance. The DORC is further optimized to obtain maximum
exergy efficiency optimized design (EEOD case) and minimum product costoptimized
design (PCOD case). The exergy efficiency and unit cost of power produced for
the optimization of EEOD case and PCOD case are 33.03% and 3.059 cent/kWh,
which are 0.3% and 17.4% improvement over base case, respectively. The PCOD
case proved to be the best, with respect to minimum unit cost of power produced
and net power output over the base case and EEOD case.
References
[1]
Yang, M.H. and Yeh, R.H. (2015) Economic Performances Optimization of the Transcritical Rankine Cycle Systems in Geothermal Application. Energy Conversion and Management, 95, 20-31. https://doi.org/10.1016/j.enconman.2015.02.021
[2]
Wang, M., Chen, Y., Liu, Q. and Zhao, Y. (2018) Thermodynamic and Thermo-Economic Analysis of Dual-Pressure and Single Pressure Evaporation Organic Rankine Cycles. Energy Conversion and Management, 177, 718-736. https://doi.org/10.1016/j.enconman.2018.10.017
[3]
Li, J., Ge, Z., Duan, Y., Yang, Z. and Liu, Q. (2018) Parametric Optimization and Thermodynamic Performance Comparison of Single-Pressure and Dual-Pressure Evaporation Organic Rankine Cycles. Applied Energy, 217, 409-421. https://doi.org/10.1016/j.apenergy.2018.02.096
[4]
Tchanche, B. F., Lambrinos, G., Frangoudakis, A. and Papadakis, G. (2011) Low-Grade Heat Conversion into Power Using Organic Rankine Cycles—A Review of Various Applications. Renewable and Sustainable Energy Reviews, 15, 3963-3979. https://doi.org/10.1016/j.rser.2011.07.024
[5]
Braimakis, K. and Karellas, S. (2018) Energetic Optimization of Regenerative Organic Rankine Cycle (ORC) Configurations. Energy Conversion and Management, 159, 353-370. https://doi.org/10.1016/j.enconman.2017.12.093
[6]
International Renewable Energy Agency (IRENA) (2017) Geothermal Power: Technology Brief (September). International Renewable Energy Agency, Abu Dhabi.
[7]
Guzovi, Z., Rašković, P. and Blatarić, Z. (2014) The Comparison of a Basic and a Dual-Pressure ORC (Organic Rankine Cycle): Geothermal Power Plant Velika Ciglena Case Study. Energy, 76, 175-186. https://doi.org/10.1016/j.energy.2014.06.005
[8]
Ziviani, D., Beyene, A. and Venturini, M. (2014) Advances and Challenges in ORC Systems Modeling for Low Grade Thermal Energy Recovery. Applied Energy, 121, 79-95. https://doi.org/10.1016/j.apenergy.2014.01.074
[9]
Lecompte, S., Huisseune, H., Van Den Broek, M., Vanslambrouck, B. and De Paepe, M. (2015) Review of Organic Rankine Cycle (ORC) Architectures for Waste Heat Recovery. Renewable and Sustainable Energy Reviews, 47, 448-461. https://doi.org/10.1016/j.rser.2015.03.089
[10]
Li, T., Zhang, Z., Lu, J., Yang, J. and Hu, Y. (2015) Two-Stage Evaporation Strategy to Improve System Performance for Organic Rankine Cycle. Applied Energy, 150, 323-334. https://doi.org/10.1016/j.apenergy.2015.04.016
[11]
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, 83, 527-542. https://doi.org/10.1016/j.renene.2015.04.069
[12]
Thierry, D.M., Flores-Tlacuahuac, A. and Grossmann, I.E. (2016) Simultaneous Optimal Design of Multi-Stage Organic Rankine Cycles and Working Fluid Mixtures for Low-Temperature Heat Sources. Computers and Chemical Engineering, 89, 106-126. https://doi.org/10.1016/j.compchemeng.2016.03.005
[13]
Manente, G., Lazzaretto, A. and Bonamico, E. (2017) Design Guidelines for the Choice between Single and Dual Pressure Layouts in Organic Rankine Cycle (ORC) Systems. Energy, 123, 413-431. https://doi.org/10.1016/j.energy.2017.01.151
[14]
Sadeghi, M., Nemati, A. and Yari, M. (2016) Thermodynamic Analysis and Multi-Objective Optimization of Various ORC (Organic Rankine Cycle) Configurations Using Zeotropic Mixtures. Energy, 109, 791-802. https://doi.org/10.1016/j.energy.2016.05.022
[15]
Li, J., Ge, Z., Liu, Q., Duan, Y. and Yang, Z. (2018) 'Thermo-Economic Performance Analyses and Comparison of Two Turbine Layouts for Organic Rankine Cycles with Dual-Pressure Evaporation. Energy Conversion and Management, 164, 603-614. https://doi.org/10.1016/j.enconman.2018.03.029
Bejan, A., Tsatsaronis, G. and Moran, M. (1996) Thermal Design & Optimization. John Wiley & Sons Inc., New York.
[18]
Ahmadzadeh, A., Reza, M. and Sedaghat, A. (2017) Thermal and Exergoeconomic Analysis of a Novel Solar Driven Combined Power and Ejector Refrigeration (CPER) System. International Journal of Refrigeration, 83, 143-156. https://doi.org/10.1016/j.ijrefrig.2017.07.015
[19]
Manente, G., Lazzaretto, A. and Bonamico, E. (2017) Design Guidelines for the Choice between Single and Dual Pressure Layouts in Organic Rankine Cycle (ORC) Systems. Energy, 123, 413-431. https://doi.org/10.1016/j.energy.2017.01.151
[20]
Kazemi, N. and Samadi, F. (2016) Thermodynamic, Economic and Thermo-Economic Optimization of a New Proposed Organic Rankine Cycle for Energy Production from Geothermal Resources. Energy Conversion and Management, 121, 391-401. https://doi.org/10.1016/j.enconman.2016.05.046
[21]
Cayer, E., Galanis, N. and Nesreddine, H. (2010) Parametric Study and Optimization of a Transcritical Power Cycle Using a Low Temperature Source. Applied Energy, 87, 1346-1357. https://doi.org/10.1016/j.apenergy.2009.08.031
