Innovative facade color | Revolutionary cooling color: When buildings sweat to save energy - picture: xpert.digital
Singapore researchers develop cooling wall paint against city overheating
Innovative facade technology combines three cooling mechanisms in one material
A breakthrough in building cooling could fundamentally change the way we deal with urban heat. Researchers at Nanyang Technological University in Singapore have developed an innovative facade color that not only cools individual buildings, but also has positive effects on the entire urban environment. This groundbreaking technology combines three physical cooling mechanisms in a single material and achieves energy savings of up to 40 percent.
Suitable for:
The science behind the “sweating” color
Composition and structure
The revolutionary color is based on a cement-like paint made of calcium-silicate hydrate, one of the most important components of concrete, which is mixed with water and supplemented by nanoparticles. This wording, known as CCP-30, consists of a porous network of calcium-silicate hydrate gel, which was modified by nanoparticles. The porous structure enables the color to save about 30 percent of their weight on water.
Triple cooling mechanism
The innovative material uses three different principles for cooling:
1. Highly efficient reflection
The color reflects 88 to 92 percent of the incident sunlight, even when it is damp. Unlike conventional white paintings, it does not reflect the light in a wide range of infrarotic radiation, but mostly in a wavelength range between 8 and 13 micrometers.
2. Passive radiation cooling
The color emits up to 95 percent of the absorbed heat as infrared radiation. These wavelengths are located in the atmospheric window and are almost undisturbed back into space, which means that the environment is less heated up than with a conventional white building.
3. Evaporation cooling
The decisive breakthrough lies in the third mechanism: the nanoparticles absorb water from rain and humidity and slowly release it, similar to how human skin sweats. When the stored water evaporates, it removes a large amount of warmth to the surroundings.
Extraordinary performance data
Cooling capacity in tropical climate zones
In Feldtests in Singapore, one of the most damp cities in the world, the new color showed impressive results. The CCP-30 color supplied a cooling capacity up to ten times higher than commercial cooling colors in tropical climate zones. This is particularly important because conventional radiation -based cooling colors in moist environments function poorly because water vapor in the air captures the heat near the surface.
Long -term tests confirm durability
After two years of tropical sun and rain in Singapore, the innovative color remained perfectly white, while conventional white and commercial cooling colors yielded. This resistance is crucial for maintaining the high reflection and cooling performance over time.
Energy savings and environmental impacts
Significant reduction in energy requirements
Pilot studies on buildings showed electricity savings of 30 to 40 percent compared to conventional cooling methods. A life cycle analysis resulted in a 28 percent lower CO₂ footprint per functional unit compared to standard color. These savings are of enormous importance, since the cooling of buildings worldwide is around 20 percent of total electricity consumption and makes a significant contribution to CO₂ emissions.
Combating the urban heat island effect
In the reality tests of the NTU Singapore it was demonstrated that cooling colors can help to make pedestrians feel cooler up to 1.5 degrees Celsius. The coated environment was up to 2 degrees Celsius cooler than non -coated areas during the hottest time of the day. About 30 percent less heat was given by the painted buildings and sidewalks.
Suitable for:
Practical application and future prospects
Optimal operating conditions
The developed color unfolds its greatest possible benefit in environments that are damp, sunny and densely built on. In addition to many other major cities in tropical latitudes, Singapore would be a perfect location in order to save a lot of energy for air conditioning systems in the future.
Already running pilot projects
The technology is already being tried in practice. The Singapore industrial development company JTC plans to use the reflective color coating in buildings in Bukit Batok and Sin Ming. In addition, the NTU 2020 also tested the use of cooling paint on two housing board blocks in Bukit Purmei before HDB extended its use to 130 blocks into tampins.
Self -preserving properties
What particularly characterizes the CCP-30 color is its self-refreshing ability-it can absorb water from rain and atmospheric moisture in order to maintain the evaporation cooling over time without the lighting interaction of the color in a moist state.
Breakthroughs: Passive cooling technology lowers temperatures without energy
This innovative cooling color represents an important progress in passive cooling technology, which does not use energy and yet achieves considerable cooling services. With their ability to save energy, reduce emissions and cool cities naturally, CCP-30 could play a key role in the fight against climate change-one paint after the other.
The research results were published in the renowned trade magazine Science and mark a turning point in the development of sustainable building cooling. This technology offers a practical and long -term solution for reducing the urban heating effect and could be of great use, especially in developing countries, where the electricity infrastructure may be inadequate or air conditioning is not affordable.
Suitable for:
Your global marketing and business development partner
☑️ Our business language is English or German
☑️ NEW: Correspondence in your national language!
Konrad Wolfenstein
I would be happy to serve you and my team as a personal advisor.
You can contact me by filling out the contact form or simply call me on +49 89 89 674 804 (Munich) . My email address is: wolfenstein ∂ xpert.digital
I'm looking forward to our joint project.
