Nanofluids for energy efficient heat exchange systems in power engineering, transport and industry

Nanofluids based on aluminosilicates (left) and carbon nanotubes (right)
Experimental cell. Boiling of nanofluids


Nanofluids are colloidal dispersions of nanoparticles of various nature and chemical composition in traditional heat carriers. Today it is a promising heat carrier for the needs of the nuclear industry, energy, metallurgy, electronics, laser emitters, and power transformers.


The average particle size, nm 70-3000. Particle concentration, wt. % 0.5 – 1.0. Sedimentation stability 1.5 – 2.0 months. The critical flux is q · 10–6, W / m2 3.5–3.8. Heat transfer coef-ficient, α, W/m2. K 35000 – 52000.


Nanofluids are able to increase the critical heat flow by 3-4 times compared to distilled water, in contrast to single-phase coolants to avoid a sudden onset of the boiling crisis. They have high colloidal resistance and resistance to multiple boiling cycles – cooling, low cost, affordable and environmentally friendly.

Development readiness level

Prototypes of the created nanofluids. Technology and regulations for the preparation of nanofluids for use on an industrial scale.

Contact information

Oleksandr Hovavko, Gas Institute of NAS of Ukraine

+380937353327 e-mail: