Numerical Investigations of parabolic trough collectors using different nanofluids | ||||
International Journal of Applied Energy Systems | ||||
Article 5, Volume 2, Issue 2, July 2020, Page 88-94 PDF (2.79 MB) | ||||
Document Type: Original papers | ||||
DOI: 10.21608/ijaes.2020.169898 | ||||
View on SCiNiTO | ||||
Authors | ||||
Nabeel Abed1; Imran Afgan2; Adel Nasser3; Hector Iacovides3; Andrea Cioncolini3; Tarek Mekhail 4 | ||||
1Department of Mechanical, Aerospace, and Civil (MACE) engineering, school of Engineering University of Manchester Manchester, UK | ||||
2Department of Mechanical Engineering, College of Engineering, Khalifa University of Science and Technology, Abo Dhabi, UAE, imran.afgan@ku.ac.ae Department of MACE, school of Engineering University of Manchester, Manchester, UK | ||||
3Department of MACE, school of Engineering University of Manchester Manchester, UK | ||||
4Faculty of Energy Engineering - Aswan University - Aswan - Egypt | ||||
Abstract | ||||
This paper presents three-dimensional numerical simulations of parabolic trough collectors (PTC) based on two low-Reynolds eddy viscosity turbulence models, namely; Launder and Sharma k-epsilon and k-omega SST models. For the simulations, water was used as the Heat Transfer Fluid (HTF) with four different nanoparticles; Al2O3, TiO2, CuO and Cu. Different volume fractions (φ) of the nanoparticles were investigated for various Reynolds (Re) numbers with uniform heat flux. Results showed that the overall performance of the system is more sensitive to changes in the thermal properties of nanofluids than the thermal properties of the HTF. At a volume fraction of 6% and a Re number of 70,000, the Nusselt number (Nu) enhancement of nanofluids TiO2-water, Al2O3-water, CuOwater, and Cu-water were found to be 21.5%, 20.2%, 18.11%, and 15.7% respectively while the performance evaluation criteria (PEC) were 1.214, 1.2, 1.18 and 1.155 respectively. | ||||
Statistics Article View: 242 PDF Download: 163 |
||||