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Cooling characteristics of water based nanofluids with agitation (CROSBI ID 207147)

Prilog u časopisu | izvorni znanstveni rad | međunarodna recenzija

Župan, Josip ; Landek, Darko ; Filetin, Tomislav Cooling characteristics of water based nanofluids with agitation // Materials performance and characterization, 3 (2014), 4; 326-336. doi: 10.1520/MPC20140019

Podaci o odgovornosti

Župan, Josip ; Landek, Darko ; Filetin, Tomislav

engleski

Cooling characteristics of water based nanofluids with agitation

Series of quenching experiments were performed according to the ISO 9950, ASTM 6200 and ASTM D 6482-6 standards. Water based nanofluids with 0.01, 0.1 and 0.2 g/l TiO2 were prepared using two-step method and ultrasonic homogenization. The nanofluids were tested to see the possibility of their application as high temperature heat transfer fluids. Nanoparticles used in this series of experiments were 50 nm in diameter. All of the cooling curves were recorded and analyzed using ivf SmartQuench® system. The first set of experiments was conducted under still conditions according to ISO 9950 standard. Pure water and nanofluids were investigated. The addition of nanoparticles showed effect on full film phase duration, increase in maximum cooling rate and change in transition temperature. Second series of experiments were conducted according to the ASTM D 6482-6. For this purpose, quenching bath with agitation was built at the QRC. Three levels of agitation were tested - one according to the standard, 1000 rpm, one below and one above the specified speed. Experiments with pure water and all three nanofluids were conducted and cooling curves recorded. The cooling curves were analyzed using software ivf SQintegra ver4.0TM. The effects of agitation and nanoparticles contents on cooling characteristics were compared.

quenching; nanofluids; TiO2 nanoparticles; cooling curve analysis

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Podaci o izdanju

3 (4)

2014.

326-336

objavljeno

2165-3992

10.1520/MPC20140019

Povezanost rada

Strojarstvo

Poveznice
Indeksiranost