Fikri, Mohd Amiruddin and Faizal, Wan Mohd and Adli, Hasyiya Karimah and Abdul Majid, Zafri Azran (2020) TiO2-SiO2 nanofluids in water/ethylene glycol mixture for collector of solar water heating system: an experimental study for thermo physical properties in different ratios. In: National Symposium on Micro-Nano Technology (NaSMiNT 2019), 8 Oct 2019, Cyberjaya, Selangor, Malaysia.
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Abstract
Nowadays, solar energy is a very important source for renewable energy. In Malaysia, the government has introduced Industrial Revolution 4.0 (IR4.0) that is expected to change the mindset of its people about the importance of natural source. This study focuses on the working fluid in Solar Water Heating System (SWHS) to compare thermo physical properties of TiO2-SiO2 nanofluids with dispersion of two different nanoparticles in a Water/ Ethylene Glycol mixture. Two hybrid mixtures in volume percent of TiO2 and SiO2 nanoparticles are prepared with mixture ratios (TiO2- SiO2) of 30:70 and 70:30. Thermal conductivity and dynamic viscosity experiment have been conducted in temperature between 30 ᵒC to 70 ᵒC and in volume concentrations between 0.3 to 1.0%. Results show that thermal conductivity of nanofluid increase with the increase of temperature and volume concentration. Dynamic viscosity of nanofluids, however, increases with the increase of volume concentrations but decreases with the increase of temperature. The good combination of TiO2-SiO2 nanofluids is obtained by ratio 70:30 based on their result in thermal conductivity and dynamic viscosity respectively. Therefore, it can be concluded that the optimum ratio for SiO2-TiO2 nanofluids is 30:70 for volume concentrations between 0.3 to 1.0% for further experiment on absorber SWHS as the working fluids.
| Item Type: | Proceeding Paper (Other) |
|---|---|
| Uncontrolled Keywords: | TiO2-SiO2 nanofluids; dynamic viscosity; thermal conductivity |
| Subjects: | Q Science > QD Chemistry T Technology > T Technology (General) |
| Kulliyyahs/Centres/Divisions/Institutes (Can select more than one option. Press CONTROL button): | Kulliyyah of Allied Health Sciences > Department of Diagnostic Imaging and Radiotherapy Kulliyyah of Allied Health Sciences |
| Depositing User: | Dr. Zafri Azran Abdul Majid |
| Date Deposited: | 21 Aug 2026 09:49 |
| Last Update: | 21 Aug 2026 09:49 |
| Queue Number: | 2026-08-Q4856 |
| URI: | http://irep.iium.edu.my/id/eprint/130600 |
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