ANALYSIS OF AN ORC USING R245fa UNDER THE OPTIMUM DESIGN WORKING CONDITION OF CONDENSER

Year 2023, Volume: 8 Issue: 2, 1 - 13, 31.12.2023

Abdulraaouf Okash Recep Yumrutaş Emrullah Kocaman Hüseyin Yağlı

Abstract

This scientific paper presents a comprehensive performance analysis of an Organic Rankine Cycle (ORC) used for heat waste recovery. The study investigates the influence of condenser design on the overall performance of the (ORC) system. To achieve this, the R245fa refrigerant is chosen as the working fluid due to its advantageous properties, rendering it a suitable choice for this specific application. Through detailed analysis, the paper provides insights into the efficiency and effectiveness of the (ORC) system, shedding light on the significance of condenser design in optimizing its performance. The conclusion of the study provides an in-depth analysis of the ORC system using R145fa as the working fluid. The performance analysis considers ideal conditions and real conditions with pressure drops across heat transfer components. The design procedure for the shell and tube horizontal condenser is thoroughly explained, and eleven condenser designs are evaluated against design limitations. The optimal condenser design is chosen based on these limitations and minimum surface area. The study concludes that the overall performance of the ORC system in real conditions is lower due to pressure drop effects. The findings emphasize the crucial role of careful condenser design in improving the performance, efficiency, and cost-effectiveness of ORC systems, thus influencing investment choices.

Keywords

Condenser, design, analysing, optimising, ORC, R245fa

References

• [1] Artaş, S. B., Kocaman, E., Bilgiç, H. H., Tutumlu, H., Yağlı, H., & Yumrutaş, R. (2023). Why PV panels must be recycled at the end of their economic life span? A case study on recycling together with the global situation. Process Safety and Environmental Protection, 174, 63-78.
• [2] Jankowski, M. (2022). A new indicator for minimizing size of an ORC power plant based on heat exchanger and turbine design parameters. Applied Thermal Engineering, 201, 117750.
• [3] Köse, Ö., Koç, Y., & Yağlı, H. (2022). Is Kalina cycle or organic Rankine cycle for industrial waste heat recovery applications? A detailed performance, economic and environment based comprehensive analysis. Process Safety and Environmental Protection, 163, 421-437.
• [4] Ata, S., Köse, Ö., Tutumlu, H., Yağlı, H., Koç, Y., & Koç, A. (2023). Which power cycle is the best fit for parabolic trough solar collectors? A comparative and comprehensive case study for six sub-configurations of the three main cycles. Energy Conversion and Management, 291, 117338.
• [5] Kocaman, E., Karakuş, C., Yağlı, H., Koç, Y., Yumrutaş, R., & Koç, A. (2022). Pinch point determination and Multi-Objective optimization for working parameters of an ORC by using numerical analyses optimization method. Energy Conversion and Management, 271, 116301.
• [6] Aghahosseini, S., & Dincer, I. (2013). Comparative performance analysis of low-temperature Organic Rankine Cycle (ORC)using pure and zeotropic working fluids. Applied Thermal Engineering, 54(1), 35–42. https://doi.org/10.1016/j.applthermaleng.2013.01.028
• [7] Eyerer, S., Wieland, C., Vandersickel, A., & Spliethoff, H. (2016). Experimental study of an (ORC) (Organic Rankine Cycle) and analysis of R1233zd-E as a drop-in replacement for R245fa for low-temperature heat utilization. Energy, 103, 660–671. https://doi.org/10.1016/j.energy.2016.03.034
• [8] Arabkoohsar, A., & Nami, H. (2019). Thermodynamic and economic analyses of a hybrid waste-driven CHP–(ORC) plant with exhaust heat recovery. Energy Conversion and Management, 187, 512–522. https://doi.org/10.1016/j.enconman.2019.03.027
• [9] Usman, M., Imran, M., Yang, Y., Lee, D. H., & Park, B. S. (2017). Thermo-economic comparison of air-cooled and cooling tower-based Organic Rankine Cycle (ORC)with R245fa and R1233zde as candidate working fluids for different geographical climate conditions. Energy, 123, 353–366. https://doi.org/10.1016/j.energy.2017.01.134
• [10] Shawabkeh, R. (2015). Steps for the design of Heat Exchanger. King Fahd University of Petroleum & Minerals. https://engineering.mu.edu.iq/wp- content/uploads/2019/04/design_of_Heat_Exchanger.pdf (Last access: April 27, 2023)
• [11] Towler, G., & Sinnott, R. (2021). Chemical engineering design: principles, practice and economics of plant and process design. Butterworth-Heinemann.
• [12] Incropera, F. P., DeWitt, D. P., Bergman, T. L., & Lavine, A. S. (1996). Fundamentals of heat and mass transfer (Vol. 6, pp. 408-409). New York: Wiley.
• [13] Kakac, S., Liu, H., & Pramuanjaroenkij, A. (2020). Heat exchangers: selection, rating, and thermal design. CRC press.