Improving thermal conductivity of radiators using a graphene-doped coating

ABSTRACT

The heat dissipation efficiency of the radiator is of great significance to the reliability of the power transformer system. However, traditional coatings on the radiator are designed to improve the corrosion resistance of radiators, which usually have a lower thermal conductivity. In this work, the thermal properties of graphene-doped coating have been studied using a combination of electrical and optical method. It has shown about a 15% improvement in the thermal conductivity compared to the traditional anticorrosive coatings. It will be shown that the graphene can not only spread more heat to enable the sample to reach the steady state more quickly but also enhance the heat radiation to lower the temperature. It provides a simple and effective way to accelerate the heat spread of radiators and thus lower the system temperature.

KEYWORDS:

• Graphene composite
• coatings
• thermal conductivity
• infrared emittance
• power transformer
• heat dissipation
• temperature-independent electrical parameter
• temperature management

Acknowledgements

This research was supported by the Key Technology and Equipment for Large-Scale and Safe Charging of Electric Vehicle under Grant No. 2016YFB0101901; the National key research and development program of science and technology of china under Grant No. KZ201710005008.

Disclosure statement

No potential conflict of interest was reported by the author(s).

Additional information

Funding

This research was supported by the Key Technology and Equipment for Large-Scale and Safe Charging of Electric Vehicle under grant number 2016YFB0101901; the National Key Research and Development Program of Science and Technology of china under grant number KZ201710005008.