An eco-friendly smart coating to keep buildings cool without air conditioners

TECHNOLOGY SUMMARY

An innovative eco-friendly and low-cost solution is developed to keep buildings cooler under direct sunlight while consuming zero electricity. It provides a “smart” cooling mechanism that can both enhance daytime cooling and minimize nighttime heat loss using outer space as cold source and sky as a temperature regulator.

AREA/MATURITY/AWARDS

Primary Application Area: Energy, Infrastructure, Resilience

Technology Development Status: Proven Manufacturability

Technology Readiness Level: TRL 6

Vetted Programs/Awards: Recommended by “Science” in its “Editor’s Choice” as “A smart radiative cooler”.


SHOWCASE SUMMARY

Organization Type: Academic/Gov Lab

Website: https://www.polyu.edu.hk/


GOVT/EXTERNAL FUNDING SOURCES

External Funding to Date: The solution was developed through a project supported by “Environmental Conservation Fund of Hong Kong SAR. Currently, the project team is applying for “Hong Kong Green Technology Fund” and “Research Impact Fund” to further develop the solution.