Eventos Anais de eventos
ENCIT 2020
18th Brazilian Congress of Thermal Sciences and Engineering
Thermodynamic analysis of an ORC driven by a Parabolic Trough Collector with Nanofluids
Submission Author:
Diogo Zidan , MG
Co-Authors:
Diogo Zidan, Cristiana Brasil Maia
Presenter: Diogo Zidan
doi://10.26678/ABCM.ENCIT2020.CIT20-0708
Abstract
The continuous rise of world energy consumption together with the damage caused by the intense usage of fossil fuels brings a special attention in renewable energy sources. The solar energy is highlighted as a clean and abundant solution. This work studies a method to upgrade the energy generation through solar systems by applying nanofluids in a Parabolic Trough Collector (PTC) used as heat source of an Organic Rankine Cycle (ORC). Syltherm 800 is used as base fluid and to compose the nanofluid, different nanoparticle materials, such as Al2O3 and TiO2, are evaluated. Toluene and Cyclohexane are also investigated as ORC operation fluids. The results expose a significant enhancement in the ORC thermal efficiency for the nanofluid with TiO2 but a small improvement for the nanofluid with Al2O3. In addition, calculations demonstrated a considerable increase in the heat transfer coefficient and a significant drop in Reynolds number as the nanoparticle concentration in the nanofluid increases.
Keywords
parabolic trough collector, Organic Rankine Cycle (ORC), Nanofluids
DOWNLOAD PDF VIEW PRESENTATION
