Adantages
- True Subambient Cooling
- Zero Energy Requirement
- Superior Optical Performance
- Scalable and Industry-Compatible
- Sustainable Impact
Summary
The escalating demand for space cooling, driven by climate change, urbanization, and rising global temperatures, has intensified energy consumption, with building cooling alone accounting for nearly 25% of electricity usage in the United States and projected to surge worldwide. Existing cooling technologies, predominantly air conditioning systems, are energy-intensive, fossil-fuel dependent, and major contributors to carbon emissions. While "cool roof" coatings exist, they offer limited performance by reflecting sunlight but failing to achieve subambient cooling due to poor thermal emissivity.
Our innovation presents a Passive Daytime Radiative Cooling (PDRC) paint - a novel formulation combining nanospheres of materials that reflect Sunlight and emit heat to the deep space, in a polymeric matrix. Unlike conventional coatings, this technology simultaneously achieves near-perfect solar reflection and effective infrared thermal emission through the atmospheric window, enabling surfaces to cool below ambient temperature without the need for mechanical systems or electricity. Its simplicity, scalability, and compatibility with existing industrial application methods make it an economically viable and environmentally impactful solution for building cooling and beyond. By bridging the performance gap left by conventional paints, this invention offers a significant step toward energy-efficient and sustainable cooling.
Mechanism of radiative cooling, showing solar reflection and thermal emission.
Desired Partnerships
- License
- Sponsored Research
- Co-Development