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Investigating the experimental effect of TiO2/SiC hybrid nanoparticles on the heat transfer performance of car radiator coolant
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Hasan Amirahmadi1   , Mohammadhasan Nobakhti *2 , Ahmed Falih Al-hamidi1 |
1- Department of Mechanical Engineering, Science and Research Branch, Islamic Azad University, Tehran, Iran
2- Department of Mechanical Engineering, Science and Research Branch, Islamic Azad University, Tehran, Iran , m.nobakhti@srbiau.ac.ir |
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Abstract: (14 Views) |
In this paper, a new nanofluid based on hybrid nanoparticles was synthesized for cooling the radiator of internal combustion engines. Titanium oxide (TiO2) and silicon carbide (SiC) nanoparticles were studied and investigated in four different concentrations and combinations of 1, 2, 3 and 4 mass% in ethylene glycol base fluid at four radiator inlet temperatures of 80, 85, 90 and 95°C. The total mass concentration of hybrid nanoparticles in the base fluid was 5%. In order to implement the cooling system conditions of an internal combustion engine, a test bed set including a pump, radiator, boiler, communication pipes, thermometer, etc. was prepared. After calibrating the measuring devices, the tests were conducted in 5 different states including the base fluid and 4 hybrid nanofluids in different percentages, and the temperatures of the fluid entering and leaving the radiator were recorded in each test. The results showed that by adding nanoparticles to the base fluid, the density and viscosity of the nanofluid increased. The freezing point in the 4%TiO2+1%SiC state showed a decrease of 4.4°C compared to the base state and experienced a decrease of -41.4°C. Also, regarding the boiling point temperature in the 2%TiO2+3%SiC state, the temperature shows an increase of 9.4℃ compared to the base fluid state, which will lead to a temperature of 118.4℃. Finally, the application of nanofluids in the engine cooling system showed that the best performance belongs to the hybrid nanofluid with 3%TiO2+2%SiC, which results showed that the Nusselt number in all states of the hybrid nanofluid with 3%TiO2+2%SiC will increase by approximately 20% compared to the base state (ethylene glycol only). |
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| Keywords: Nanofluid, hybrid, ethylene glycol, cooling, radiator |
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Full-Text [PDF 1249 kb]
(7 Downloads)
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Type of Study: Research |
Subject:
Heat and Mass Transfer
Received: 2025/02/25 | Accepted: 2025/05/30 | Published: 2025/05/31
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