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STUDI EKSPERIMENTAL PERPINDAHAN PANAS PADA RADIATOR MENGGUNAKAN NANOFLUIDA AIR-ETILEN GLIKOL/TiO2

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Radiators are essential heat exchangers in automotive engine cooling systems that enhance engine performance by dissipating heat. Conventional coolants such as water, ethylene glycol, propanol, engine oil, and their mixtures exhibit limited thermal performance due to their low thermal conductivity. This study aims to evaluate the enhancement of heat transfer performance in a car radiator using a nanofluid based on a water–ethylene glycol mixture (65:35)% with the addition of titanium dioxide (TiO2) nanoparticles at volume fractions of 0.3 , 0.5 , and 0.7%. Experiments were conducted on a cross-flow radiator with a flow rate of 10 L/min, air velocity of 4 m/s, and two inlet fluid temperatures of 30, 50, and 70°C. Thermal parameters including Reynolds, Prandtl, Nusselt numbers, heat transfer rate (Q), overall heat transfer coefficient (U), and radiator effectiveness (ε) were determined based on measurements of hot and cold fluid inlet–outlet temperatures. The results show that the addition of TiO2 nanoparticles consistently improves heat transfer performance compared to water and water–ethylene glycol mixtures. The highest performance was achieved by the 0.7% TiO2 nanofluid at 70°C, yielding a heat transfer rate of 100.03 W, an overall heat transfer coefficient of 175.03 W/(m²·°C), and a radiator effectiveness of 67.40%. The highest effectiveness of the water–ethylene glycol mixture at 70°C was 51.32%, whereas the 0.7% TiO2 nanofluid achieved a 31.33% improvement at the same temperature. These findings indicate that TiO2 nanofluids offer superior thermal performance and cooling effectiveness.

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Detail Information

Series Title

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Call Number

T1888022025

Publisher

Indralaya : Prodi Teknik Mesin, Fakultas Teknik Universitas Sriwijaya., 2025

Collation

xxx, 87 hlm.; ilus.; tab.; 29 cm

Language

Indonesia

ISBN/ISSN

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Classification

621.402 07

Content Type

Text

Media Type

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Carrier Type

-

Edition

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Subject(s)

Prodi Teknik Mesin
Teknologi Perpindahan Panas

Specific Detail Info

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Statement of Responsibility

MI

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