Affiliation:
1. Shanghai Key Laboratory of Electrical Insulation and Thermal Ageing Department of Polymer Science and Engineering State Key Laboratory of Metal Matrix Composites Shanghai Jiao Tong University Shanghai 200240 China
2. School of Electrical Engineering Southwest Jiaotong University Chengdu 611756 China
3. School of Physical Sciences Great Bay University Dongguan 523000 China
4. State Key Laboratory of Metal Matrix Composites Shanghai Jiao Tong University Shanghai 200240 China
Abstract
AbstractWhile providing electrical energy for human society, power equipment also consumes electricity and generate heat. Cooling equipment consumes a significant amount of electricity, further increasing energy consumption and load on the power grid. Therefore, there is an urgent need to develop low‐energy and sustainable cooling technologies for power equipment. In this study, a hybrid passive cooling composite designed to enhance heat dissipation for heavy‐load power equipment is introduced. Specifically, the composite material achieves outstanding radiative cooling performance with an average solar reflectance of up to 0.98, while its excellent atmospheric water harvesting performance ensures high evaporation cooling power without the need for manual water replenishment. As a result, the composite effectively lowers the temperature of outdoor heavy‐load power equipment (e.g., transformers) by 25.3 °C. The excellent heat dissipation properties of the composite make it a powerful tool in safeguarding electrical systems.
Funder
National Natural Science Foundation of China
Program of Shanghai Academic Research Leader
Natural Science Foundation of Shanghai Municipality