Ibarra Mollá, MercedesRovira de Antonio, Antonio JoséAlarcón-Padilla, Diego-CésarBlanco Galvez, Julian2024-11-292024-11-292014-05Mercedes Ibarra, Antonio Rovira, Diego-César Alarcón-Padilla, Julián Blanco, Performance of a 5kWe Organic Rankine Cycle at part-load operation, Applied Energy, Volume 120, 2014, Pages 147-158, ISSN 0306-2619, https://doi.org/10.1016/j.apenergy.2014.01.057.0306-2619https://doi.org/10.1016/j.apenergy.2014.01.057https://hdl.handle.net/20.500.14468/24575Este es el preprint del artículo. La versión registrada fue publicada por primera vez en Applied Energy, Volume 120, 2014, Pages 147-158, está disponible en línea en el sitio web del editor: https://doi.org/10.1016/j.apenergy.2014.01.057 This is the preprint of the article. The registered version was first published in Applied Energy, Volume 120, 2014, Pages 147-158, is available online at the publisher's website: https://doi.org/10.1016/j.apenergy.2014.01.057This paper analyzes the performance of an Organic Rankine Cycle (ORC) system at part load operation. The objective is to understand its behavior from a thermodynamic perspective, identifying which elements are the most critical and which are the best operating points for each level of demanded power. This paper also compares two working fluids: R245fa and Solkatherm ES36 (SES36) for the same cycle specifications. The results have shown that the scroll isentropic efficiency has a great influence on the cycle performance and its thermal efficiency and that SES36 arises as a potential better fluid than R245fa. At the given maximum and minimum temperatures, the best operation point was determined. This allows reaching a maximum efficiency for each demanded level of power; depending on the required amount of power, the expander speed and the working pressure are adjusted.eninfo:eu-repo/semantics/openAccess33 Ciencias Tecnológicas::3322 Tecnología energéticaartículoorganic Rankine cycleoff-design modelingscroll expanderthermal analysis