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Preliminary Design of Compact Condenser in an Organic Rankine Cycle System for the Low Grade Waste Heat Recovery

Author

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  • Roberto Capata

    (Department of Mechanical and Aerospace Engineering, University of Roma "Sapienza", Piazzale Aldo Moro, 5, 00185 Roma, Italy
    These authors contributed equally to this work.)

  • Erasmo Zangrillo

    (Department of Mechanical and Aerospace Engineering, University of Roma "Sapienza", Piazzale Aldo Moro, 5, 00185 Roma, Italy
    These authors contributed equally to this work.)

Abstract

The aim of this paper is to present a thermodynamic cycle for the production of electrical power in the 2–5 kW range, suitable for all types of thermally propelled vehicles. The sensible heat recovered from the exhaust gases feeds the energy recovery system, which is able to produce sufficient power to sustain the air conditioning system or other auxiliaries. The working fluids R134a and R245fa have been used in the ORC system, and the systems are simulated by CAMEL-Pro TM software. The cycles are generated starting from the same heat source: the exhaust gas of a typical 2.0 L Diesel engine (or from a small size turbine engine). The design of the condenser has been performed to obtain a very compact component, evaluating the heat exchanger tube and fins type design. Through empirical formulas, the area of heat exchange, the heat required to exchange and the pressure drop in the element have been calculated. A commercial software package is used to build the model of the condenser, then a thermal and mechanical analysis and a CFD analysis are realized to estimate the heat exchange. Finally the evaluations, the possible future studies and possible improvements of the system are shown.

Suggested Citation

  • Roberto Capata & Erasmo Zangrillo, 2014. "Preliminary Design of Compact Condenser in an Organic Rankine Cycle System for the Low Grade Waste Heat Recovery," Energies, MDPI, vol. 7(12), pages 1-28, November.
    • Handle: RePEc:gam:jeners:v:7:y:2014:i:12:p:8008-8035:d:42917
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    References listed on IDEAS

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    1. Yamamoto, Takahisa & Furuhata, Tomohiko & Arai, Norio & Mori, Koichi, 2001. "Design and testing of the Organic Rankine Cycle," Energy, Elsevier, vol. 26(3), pages 239-251.
    2. Vélez, Fredy & Segovia, José J. & Martín, M. Carmen & Antolín, Gregorio & Chejne, Farid & Quijano, Ana, 2012. "A technical, economical and market review of organic Rankine cycles for the conversion of low-grade heat for power generation," Renewable and Sustainable Energy Reviews, Elsevier, vol. 16(6), pages 4175-4189.
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    Cited by:

    1. Taleghani, S. Taslimi & Sorin, M. & Gaboury, S., 2021. "Thermo-economic analysis of heat-driven ejector system for cooling smelting process exhaust gas," Energy, Elsevier, vol. 220(C).
    2. Alihan Kaya & Steven Lecompte & Michel De Paepe, 2022. "Experimental Flow Boiling Study of R245a at High Reduced Pressures in a Large Diameter Horizontal Tube," Energies, MDPI, vol. 15(3), pages 1-27, January.
    3. Li, Jian & Liu, Qiang & Ge, Zhong & Duan, Yuanyuan & Yang, Zhen & Di, Jiawei, 2017. "Optimized liquid-separated thermodynamic states for working fluids of organic Rankine cycles with liquid-separated condensation," Energy, Elsevier, vol. 141(C), pages 652-660.

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