Enhancing the performance of a vapour compression refrigerator system using R134a with a CuO/CeO2 nano-refrigerant

Mohamed, HudaElslam (avtor), Camdali, Unal (avtor), Biyikoglu, Atilla (avtor), Aktas, Metin (avtor)

Most studies report that dispersing nanoparticles into refrigerants and lubricating oils leads to performance improvements in refrigeration systems, due to improvements in the thermal physics properties of a pure refrigerant, which leads to reduced energy consumption. Using nanoparticles in a refrigeration system is associated with many difficulties, such as the cost of preparing and obtaining a stable and homogeneous mixture with less agglomeration and sedimentation. Most current studies focus on the use of metals, metal oxides, and a hybrid of oxides as nanoparticles in refrigeration systems. In this research, nanoparticles were prepared in an inexpensive and easy way as a single oxide and as a mixture consisting of copper and cerium oxides. The results of nanoparticle preparation using X-ray diffraction and scanning electron microscopy prove that the particles of the samples were spherical in shape, with suitable average diameters ranging from 78.95 nm, 79.9 nm, 44.15 nm and 63.3 nm for copper oxide, cerium oxide, the first mixture, and the second mixture, respectively. Cerium oxide has not been used in a refrigeration system; this study preferred the implementation of a theoretical study using Ansys Fluent software to verify the possibility of improving the performance of the refrigeration system. The results confirmed that copper oxide enhanced the coefficient of performance of the refrigeration system by 25 %, and cerium oxide succeeded in improving the performance of the. system by a lesser value. The mixture containing a higher percentage of copper oxide yielded better results.

• Jezik: Angleški jezik
• Ključne besede: vapour compression refrigeration systems, coefficient of performances, nano-refrigerants, nanoparticles
• Vrsta gradiva: Članek v reviji
• Tipologija: 1.01 - Izvirni znanstveni članek
• Organizacija: FS - Fakulteta za strojništvo
• Status publikacije: Objavljeno
• Različica publikacije: Objavljena publikacija
• Datum objave: 26.04.2022
• Leto izida: 2022
• Št. strani: 16 str.
• Številčenje: Vol. 68, no. 6
• PID: 20.500.12556/RUL-138110
• UDK: 620.3
• ISSN pri članku: 0039-2480
• DOI: 10.5545/sv-jme.2021.7454
• COBISS.SI-ID: 114866435
• Datum objave v RUL: 11.07.2022

Gradivo je del revije

• Naslov: Strojniški vestnik
• Skrajšan naslov: Stroj. vestn.
• Založnik: Zveza strojnih inženirjev in tehnikov Slovenije [etc.], = Association of Mechanical Engineers and Technicians of Slovenia [etc.
• ISSN: 0039-2480
• COBISS.SI-ID: 762116

Licence

• Licenca: CC BY 4.0, Creative Commons Priznanje avtorstva 4.0 Mednarodna
• Povezava: http://creativecommons.org/licenses/by/4.0/deed.sl
• Opis: To je standardna licenca Creative Commons, ki daje uporabnikom največ možnosti za nadaljnjo uporabo dela, pri čemer morajo navesti avtorja.
• Začetek licenciranja: 26.04.2022

Sekundarni jezik

• Jezik: Slovenski jezik
• Naslov: Izboljšanje zmogljivosti kompresorskega hladilnega sistema z nanohladivom R134a + CuO/CeO2
• Ključne besede: kompresorski hladilni sistemi, hladilno število, nanohladiva, nanodelci