THERMAL SCIENCE

International Scientific Journal

Anderson Breno Souza

,

André Issao Sato

,

Alvaro Antonio Villa Ochoa

,

José Ângelo Peixoto Da Costa

,

Paula Suemy Arruda Michima

SELECTION OF THE WORKING FLUID FOR A HIGH-TEMPERATURE ORC HOT-SOURCE TO BE APPLIED IN THE BRAZILIAN SEMI-ARID

ABSTRACT
This paper aims to select the most suitable working fluid to be applied in a high temperature regenerative hot-source ORC, such as those driven by biomass, for climatic conditions measured from real data in Bom Jesus da Lapa in northeastern Brazil. To this end, the most commonly used working fluids in these systems were selected among numerous authors, discarding those with high GWP and ozone depletion potential and those classified as wet according to the slope of their temperature-entropy diagram. Then, from the model developed in the software EES, the simulation and performance analysis of the proposed system was performed based on thermal efficiency. It was conducted a fluid selection from the adaptation and expanding the parameters of the qualitative spinal point method, considering the thermodynamic performance, environmental preservation criteria, safety, and fluid characteristics. As a result, it was obtained that hydrocarbons present the best thermodynamic and qualitative performances, with benzene and cyclohexane being the most attractive to be used as fluids in the proposed Rankine cycle, followed by n-hexane.
KEYWORDS
Organic Fluids, power generation, Alternative thermal sources
PAPER SUBMITTED: 2022-07-18
PAPER REVISED: 2022-12-01
PAPER ACCEPTED: 2022-12-03
PUBLISHED ONLINE: 2023-01-07
DOI REFERENCE: https://doi.org/10.2298/TSCI220718201S
CITATION EXPORT: view in browser or download as text file
THERMAL SCIENCE YEAR 2023, VOLUME 27, ISSUE Issue 4, PAGES [2775 - 2787]
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Selection of the working fluid for a high-temperature ORC hot-source to be applied in the Brazilian semi-arid

© 2024 Society of Thermal Engineers of Serbia. Published by the Vinča Institute of Nuclear Sciences, National Institute of the Republic of Serbia, Belgrade, Serbia. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution-NonCommercial-NoDerivs 4.0 International licence