Okotie, T. E. and Adelekan, D.S and Ohunakin, O.S. and Gill, Jatinder and Atiba, Opemipo E. and Atayero, A. A. (2019) Performance Evaluation of Hydrocarbon based Nanorefrigerants Subjected to Periodic Door Openings. In: International Conference on Engineering for Sustainable World, 2019, Online.
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Abstract
Domestic refrigerators are required to be energy efficient and environmentally safe. In this work, a slightly modified domestic refrigeration system was infused with various concentrations (0, 0.2, 0.4 and 0.6 g/L) of TiO2 nanolubricants and R600a refrigerant with a mass charge of 40g. The average energetic characteristics of the test rig at different door openings intervals (0.5, 1, 2, 3 and 5 minutes) were evaluated. The energetic characteristics studied were coefficient of performance (COP), refrigeration capacity, power consumption and cabinet temperature recovery time. The results obtained showed that the use of nanolubricants significantly affect the energetic performance characteristics of the system. Overall, the utilization of 0.6g/L concentration of TiO2 nanolubricant gave the best performance. The COP of the system improved by 22.39 %, while the power consumption decreased by 23.5 % when compared with pure R600a refrigerant.
| Item Type: | Conference or Workshop Item (Paper) |
|---|---|
| Uncontrolled Keywords: | words: R600a refrigerant, TiO2 nanoparticle, nanolubricants, coefficient of performance |
| Subjects: | T Technology > TJ Mechanical engineering and machinery |
| Divisions: | Faculty of Engineering, Science and Mathematics > School of Engineering Sciences |
| Depositing User: | Mrs Patricia Nwokealisi |
| Date Deposited: | 21 Apr 2021 12:40 |
| Last Modified: | 21 Apr 2021 12:40 |
| URI: | http://eprints.covenantuniversity.edu.ng/id/eprint/14006 |
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