Sustainable Passive Radiative Cooling Paint for Sub-Ambient Cooling
As global temperatures rise, the increasing demand for cooling has become a critical challenge, particularly in tropical regions. Conventional cooling methods, such as air-conditioning and mechanical ventilation systems, consume significant amounts of electricity and release greenhouse gases, exacerbating global warming. Radiative cooling offers a promising zero-energy alternative by utilizing selective emission of thermal radiation (infrared) to dissipate heat into outer space, effectively lowering the temperature of terrestrial surfaces without heavily relying on air conditioning.
The technology offer is a high-performance passive radiative cooling paint (PRCP) with nanoparticles dispersed in a polymeric matrix. Unlike conventional paints, this innovative cooling paint combines high solar reflectivity with high thermal emissivity, reducing surface temperatures below ambient (i.e. below surrounding air temperature). It can reflect incoming solar radiation while simultaneously emit thermal radiation, achieving effective cooling even under direct sunlight. The paint can be applied to buildings and any sky-facing objects to reduce surface temperatures and thereby lower energy consumption and the demand for air-conditioning. When adopted on a large scale, it helps mitigate the urban heat island effect by significantly reducing pedestrian-level air temperatures, improving thermal comfort. In Singapore’s challenging hot and humid climate, this cooling paints has demonstrated the ability to reduce surface temperatures by up to 3⁰C below ambient, providing a proven zero-energy cooling solution.
The technology owner is seeking R&D collaboration and test-bedding opportunities with real estate and building owners, developers, architects, facility owners, industrial plant operators, building designers and contractors, and cold chain logistic providers. The technology is also available for licensing to paint developers and manufacturers.