Boron nitride nanosheet nanofluids for enhanced thermal conductivity

Area of Science:

• Materials Science
• Nanotechnology
• Heat Transfer

Background:

• Traditional cooling liquids struggle with the demands of high-power, highly integrated equipment.
• Nanofluids, dispersions of nanoparticles, offer enhanced thermal conductivity for heat transfer applications.
• Boron nitride nanosheets (BNNSs) exhibit high thermal conductivity and excellent electrical insulation properties.

Purpose of the Study:

• To fabricate BNNS nanofluids.
• To investigate the effect of BNNSs on the thermal conductivity enhancement of water.
• To evaluate the thermal transfer properties of BNNS nanofluids.

Main Methods:

• Fabrication of BNNS nanofluids.
• Measurement of thermal conductivity.
• Infrared thermography to observe surface temperature changes during heating.

Main Results:

• BNNSs effectively enhance the thermal conductivity of water.
• The thermal conductivity of BNNS nanofluids reached 2.39 W mK⁻¹ at 24 vol% loading.
• BNNS nanofluids demonstrated significantly faster heat transfer than water, confirmed by infrared imaging.

Conclusions:

• Fabricated BNNS nanofluids possess excellent thermal transfer properties.
• BNNS nanofluids show potential as advanced cooling liquids for demanding applications.
• The study highlights the efficacy of BNNSs in enhancing heat transfer in water-based systems.