Author/Authors :
karakaya, uğur gazi üniversitesi - mühendislik fakültesi - kimya mühendisliği, Ankara, Turkey , gürü, metin gazi üniversitesi - mühendislik fakültesi - kimya mühendisliği, Ankara, Turkey , sözen, adnan gazi üniversitesi - teknoloji fakültesi - enerji sistemleri mühendisliği, Ankara, Turkey , aydin, duygu y. gazi üniversitesi - mühendislik fakültesi - kimya mühendisliği, Ankara, Turkey , bilici, ibrahim hitit üniversitesi - mühendislik fakültesi - kimya mühendisliği, Çorum, turkey
Abstract :
In this study, the thermophysical properties of nanoparticles containing bentonite, diatomite, sepiolite and clinoptilolite materials were determined. Nano particles with a size of 50 nm were produced using a Spex type high-energy mill. Using these nanoparticles, nanoparticles containing 2% mineralogical material and 0.5% Sodium Dodecyl Benzene Sulfonate by mass were prepared by ultrasonic mixing for 5 hours. The thermal conductivity, specific heat and viscosity measurements from thermophysical properties have been experimentally measured. The greatest thermal conductivity and specific heat increase in the mineral nano-powders were obtained with the bentonite-containing nanofluid. It is concluded that the nano flux containing bentonite has higher thermal conductivity and specific heat than the other mineralogical nano-fluids because the amount of suspended nano particles is higher. It has been observed that the resistance to flow increases due to the particle-particle interaction generated by the nanoparticles in the nanofluids, resulting in an increase in viscosity compared to pure water.
