The research was performed at PurduesFLEX LabandRay W. Herrick LaboratoriesandtheBirck Nanotechnology Centerof Discovery Park District at Purdue. The paint, developed by Purdue professor of mechanical engineering Xiulin Ruan, is fighting global warming by keeping surfaces cool enough to reduce the need for internal air conditioning. We found that using barium sulfate, you can theoretically make things really, really reflective, which means that theyre really, really white.. During an outdoor test with an ambient temperature of 43 degrees Fahrenheit, the paint still managed to lower the sample temperature by 18 degrees Fahrenheit. A new paint developed by researchers at Purdue University is the coolest literally. She covers history, science, travel, food and beverage, sustainability, economics and other topics. Itll be great to see how this evolves and how the researchers are able to develop its applications.. The U.S. Green Building Council, a nonprofit that developed the Leadership in Energy and Environmental Design (LEED) rating system for sustainable buildings, offers a heat island reduction credit for buildings working toward LEED certification levels. We looked at various commercial products, basically anything thats white, said Xiangyu Li, a postdoctoral researcher at the Massachusetts Institute of Technology, who worked on this project as a Purdue Ph.D. student in Ruans lab. The office is housed in the Convergence Center for Innovation and Collaboration in Discovery Park District at Purdue, adjacent to the Purdue campus. Hearst Magazine Media, Inc. All Rights Reserved. This light weight opens the doors to all kinds of applications, said George Chiu, a Purdue professor of mechanical engineering and an expert in inkjet printing. To achieve this level of radiative cooling below the ambient temperature, we had to apply a layer of paint at least 400 microns thick, Ruan said. Their previous ultra-white paint was a formulation made of calcium carbonate, an earth-abundant compound commonly found in rocks and seashells. One way buildings can earn that credit is to use materials or devices with an initial solar reflectance of 33 percent at installation or 28 percent over three years, Thompson says. On the other hand, to help reverse the global warming trend, it can be used in both warm and cold climates. The new formulation can achieve similar cooling with a layer just 0.15 millimeters thick. The formulation that Ruans lab created reflects 98.1% of solar radiation at the same time as emitting infrared heat. Purdue University researchers created the whitest of white, a color that reflected a staggering 98.1% of light. It could eliminate the need for air conditioning. A few years ago, the scientific and academic communities celebrated the development of Vantablack, a material that could absorb up to 99.9% of visible light. (Purdue University/John Underwood). Copyright 2022 Scripps Media, Inc. All rights reserved. The abstract and author list are available online. Committed to affordability and accessibility, Purdue has frozen tuition and most fees at 2012-13 levels, enabling more students than ever to graduate debt-free. The . Their proof is infrared camera images taken of the two paints in rooftop experiments. (Photo credit: Unsplash/Ern Low) Download Image After seven years of experimenting with over 100 . Photo provided. Since its creation, Ruan says the two questions they've gotten are where it can be purchased and can it be thinner. However, no comparably white paints that are currently available do as good of a job reflecting; they typically average around 80-90% of sunlight reflected and UV light absorption. Barium sulfate is affordable; commercial paint costs. The paint reflects 98.1% of solar radiation while also emitting infrared heat. See how Purdue never stops in the persistent pursuit of the next giant leap athttps://purdue.edu/. There is a little bit of room to make the paint whiter, but not much without compromising the paint. The new paint reflects 98% of sunlight as. WEST LAFAYETTE, Ind. So proud #purdueuniversity is being recognized for its #sustainability #innovation. This white paint is the result of six years of research building on attempts going back to the 1970s to develop radiative cooling paint as a feasible alternative to traditional air conditioners . In an effort to curb global warming, Purdue University engineers have created the whitest paint yet. And once it's on the market, will homeowners be able topaint roofing shingles or metal roofs with the paint? We already prefer to use very white finishes on interior walls because of how light and shadow play on these surfaces. I would love to try it on a roof deck that gets a lot of sun and see if we need sunglasses!Catherine Fowlkes, principal of architecture firm Fowlkes Studio, "I'm from the Caribbean, and so the first thing I would do is paint so many houses! Thats more powerful than the central air conditioners used by most houses, said Xiulin Ruan, a Purdue professor of mechanical engineering. WEST LAFAYETTE, Ind. To achieve passive daytime radiative cooling, current state-of-the-art solutions often utilize complicated multilayer structures or a reflective metal layer, limiting their applications in many fields. The ultra-white paint would be an amazing option in this case." This white colour reflects 98.1% of solar light and also emits infrared heat, which can cool the air around buildings. Ranked in each of the last four years as one of the 10 Most Innovative universities in the United States by U.S. News & World Report, Purdue delivers world-changing research and out-of-this-world discovery. (Purdue University photo/John Underwood). In a rather extreme model, they also found that covering 0.5 to 1 percent of the Earths surfacebuildings, roads, unused land, just about everythingwith the ultra-white paint would be enough to stop the global warming trend. The researchers believe that this white may be the closest equivalent of the blackest black, Vantablack, which absorbs up to 99.9% of visible light. Purdue University is a top public research institution developing practical solutions to todays toughest challenges. I might also paint all my deck floors with it so it's cooler underfoot. UPDATE: Purdue University researchers create the whitest paint on record. Note to journalists: For a copy of the paper, please contact Kayla Wiles at wiles5@purdue.edu or 765-494-2432. "There are still a few issues that need to be addressed, but progress is being made.. Discovery Park is a place where Purdue researchers move beyond traditional boundaries, collaborating across disciplines and with policymakers and business leaders to create solutions for a better world. The highly reflective surface of the paint would probably increase the effectiveness of the brise-soleil passive daylighting performance, which makes natural light bounce farther into the interior. In tests conducted during sunny, midday hours on the roof of a campus building in West Lafayette, Indiana, the paint kept outdoor surfaces 8 degrees cooler than the ambient surrounding temperatures. a layer 0.4 millimeters thick to achieve subambient radiant cooling. The other benefit of a cooler roof is that solar panels are far more efficient at lower temps, so lowering the roof temperatures will increase solar panel output significantly.Marc Clejan, founder of sustainability design firm Modern NetZero, I can imagine using ultra-white to wash sunlight across a ceiling or reflect indirect light deep into an interior space. We will be as accommodating as possible, but you may be asked tostep out or report from another location. March 14, 2023 Purdue's 'world's whitest paint' wins 2023 SXSW Innovation Award Xiulin Ruan, a Purdue University professor of mechanical engineering, holds up his lab's sample of the whitest paint on record. Purdue University, 610 Purdue Mall, West Lafayette, IN 47907, (765) 494-4600, 2015-22 Purdue University | An equal access/equal opportunity university | Copyright Complaints | Maintained by Office of Strategic Communications. Im always looking for a miracle paint surely this must be the one! These readings confirmed that our paint has a lower temperature than both its surroundings and the commercial counterpart, Ruan said. The 98.1% reflectivity compares to a reflectivity of 80-90% for other white paints designed to reflect sunlight that . While Ruans original paint formula is massively efficient, it required. By Elissaveta M. Brandon 3 minute Read. Just that potential is so strong and compelling. The standard RC of our paint is 0.49, among the best radiative cooling performances, while offering the benefits of convenient paint form, low cost, and compatibility with commercial paint fabrication processes. The researchers think that this whitest white paint is likely the closest equivalent to Vantablack, the blackest black paint that absorbs up to 99.9% of visible light. The worlds whitest paint seen in this years edition of Guinness World Records and The Late Show With Stephen Colbert keeps surfaces so cool that it could reduce the need for air conditioning. There are still a few issues that need to be addressed, but progress is being made.. by Purdue University. White houses are often boring, but they might just save the planet. Ranked the No. Typical commercial white paint gets warmer rather than cooler. Purdue scientists have already applied for a patent on the ultra white paint and are committed to clarifying its durability in in residential and commercial use. Now theyve outdone that. With this award, we are honored that SXSW joins a growing list of organizations, publications, and states that recognize Purdue University and its world-changing researchers are delivering practical solutions to todays toughest challenges, said R. Ethan Braden, executive vice president, chief marketing and communications officer for PurdueUniversity and Purdue Global. "The paint is not available on the market yet," Xiulin Ruan, the lead researcher on the project, told USA TODAY Thursday. In the meantime, its easy for sustainable building experts to envision the potential future impacts of this invention. Using this new paint formulation to cover a roof area of about 1,000 square feet could result in a cooling power of 10 kilowatts, Purdue researchers showed in a published paper. Committed to affordability and accessibility, Purdue has frozen tuition and most fees at 2012-13 levels, enabling more students than ever to graduate debt-free. The white paint that Purdue researchers created reflects 95.5% sunlight and efficiently radiates infrared heat. "The. This new paint achieves nearly the same benchmark of solar reflectance (97.9%) with just a single 150-micron layer of paint. The paint, developed at Purdue University, has earned a Guinness World RecordsTM title. The record appears in the 2022 edition of Guinness World Records.. In 2022 Ruan and his team innovated further by developing a new formulation of his groundbreaking paint that is now thinner and lighter ideal for radiating heat away from cars, trains, airplanes and even spacecraft. When I first heard about it, I was imagining, Wow, this could be utilized in all sorts of different urban conditions in the U.S. and internationally, says Elizabeth Thompson, a vice president with the U.S. Green Building Council. According to the researchers cost estimates, this paint would be both cheaper to produce than its commercial alternative and could save about a dollar per day that would have been spent on air conditioning for a one-story house of approximately 1,076 square feet. Purdue's 'world's whitest paint' is the winner of the 2023 SXSW Innovation Award for Sustainability. Cover your roof in that. How Designers Would Use the New Cooling Ultra-White Paint in Home Design, Your Privacy Choices: Opt Out of Sale/Targeted Ads. For further discussion on this intellectual property, contact Will Buchanan atwdbuchanan@prf.org and reference code 2022-RUAN-69542. Journalists visiting campus should follow visitor health guidelines. At night, the paint kept surfaces 19 degrees cooler than their surroundings. They havent yet determined an exact price for the paint, but Ruan says he expects the paint to be similar to those on the market nowroughly $30 to $40 per gallon. Coating buildings with this paint may one day cool them off enough to reduce the need for air conditioning, the researchers say. Radiative cooling is a passive cooling technology that acts by reflecting sunlight and emitting radiation in the sky window. See how Purdue never stops in the persistent pursuit of the next giant leap athttps://purdue.edu/. The translation of discovery to impact is integrated into the fabric of Discovery Park through entrepreneurship programs and partnerships. WEST LAFAYETTE Purdue University is continuing to work on the world's whitest paint. Paints on the market that are designed to reject heat reflect only 80% to 90% of sunlight and cant make surfaces cooler than their surroundings. Our paint does not use any power but, more importantly, it sends the heat to space. In fact, this effervescent hue was so unique the team earned a spot in the Guinness . WEST LAFAYETTE Purdue University is continuing to work on the world's whitest paint. This makes it ideal for cooling vehicles like airplanes or cars, which reduces the reliance on air conditioning. The newer paint not only is whiter but also can keep surfaces cooler than the formulation that the researchers had previously demonstrated. . The researchers have further studies underway to evaluate these benefits. This incredible pigment was already capable of keeping surfaces cool, thus reducing the need for air conditioning. Contactotcip@prf.org for more information. This heat transfer, along with other causes, can contribute to the urban heat island effect, a phenomenon that occurs when cities become hotter than the surrounding areas, thus requiring even more air conditioning. Disability-related accessibility issue? The technique that the researchers used to create the paint also is compatible with the commercial paint fabrication process. Tour Barbara Walters' Former NYC Apartment. This lower density, together with the thinness, provides another huge benefit: reduced weight. Using this paint will help cool surfaces and greatly reduce the need for air conditioning, Ruan said. They landed on a formulation made of calcium carbonate, an earth-abundant compound commonly found in rocks and seashells. Although a higher particle concentration is better for making something white, you cant increase the concentration too much. This paint could effectively be an alternative to air conditioners in some places. And unlike other cooling methods, this paint radiates all the heat into deep space, which also directly cools down our planet. Advertising Notice The heat doesnt stay on the Earth, so that really helps the Earth to cool down and can stop the warming trend.. To enable access, particularly to campus buildings, we recommend you contact the Purdue News Service media contact listed on the release to let them know thenature of the visit and where you will be visiting. Xiulin Ruan, a Purdue University professor of mechanical engineering, and his students have created the whitest paint on record. The paint became. Committed to affordability and accessibility, Purdue has frozen tuition and most fees at 2012-13 levels, enabling more students than ever to graduate debt-free. Patent applicationsfor this paint formulation have been filed through thePurdue Research Foundation Office of Technology Commercialization. This is thin and light enough for its radiant cooling effects to be applied to vehicles like cars, trains and airplanes. Cookie Settings, Five Places Where You Can Still Find Gold in the United States, Scientists Taught Pet Parrots to Video Call Each Otherand the Birds Loved It, Balto's DNA Provides a New Look at the Intrepid Sled Dog, The Science of California's 'Super Bloom,' Visible From Space, What We're Still Learning About Rosalind Franklins Unheralded Brilliance. 5 Most Innovative University in the United States by U.S. News & World Report, Purdue delivers world-changing research and out-of-this-world discovery. The whitest white barn roof was also much cooler to the touch, prompting many surprised responses from judges and viewers. But in applications that have precise size and weight requirements, the paint needs to be thinner and lighter.. Last year, engineers at Purdue University used their expertise in materials science to produce the world's whitest paint, with an ability to reflect around 98% of incoming sunlight and therefore . In October, the team created an ultra-white paint that pushed limits on how white paint can be. The whitest-ever paint has been produced by academic researchers, with the aim of boosting the cooling of buildings and tackling the climate crisis. The research was performed at Purdues FLEX Lab and Ray W. Herrick Laboratories and the Birck Nanotechnology Center of Purdues Discovery Park. Our paint can lose heat by its own emissionit emits heat to deep space, Ruan says. Patent applicationsfor this paint formulation have been filed through thePurdue Research Foundation Office of Technology Commercialization. A press release issued by Purdue University notes that typical commercial white paint gets warmer rather than cooler and that paints currently available in the market that are designed to reject heat reflect only 80-90 per cent of the sunlight and therefore, they can't make surfaces cooler than their surroundings. An infrared camera gives you a temperature reading just like a thermometer would to judge if someone has a fever. Typical commercial white paint apparently gets warmer rather than cooler and these intrepid scientists wanted to reverse that to help fight climate change and curb energy use. Typical commercial white paint gets warmer rather than cooler. They also have a high concentration of particles that are different sizes, allowing the paint to scatter a wider range of wavelengths. An infrared camera image shows that white radiative cooling paint developed by Purdue University researchers (left, purple) can stay cooler in direct sunlight compared with commercial white paint. Typical commercial white paint gets warmer rather than cooler when subjected to sunlight or other light sources. What if paint could cool off a building enough to not need air conditioning? Judges were able to compare thermometers reading the barns internal temperatures and to feel the difference in the roofs. October 4, 2022 by John Anderer WEST LAFAYETTE, Ind. She lives in New York. See how Purdue never stops in the persistent pursuit of the next giant leap athttps://purdue.edu/. Now this paint has the potential to cool the exteriors of airplanes, cars or trains. It absorbs less heat than the heat emitted from the sun. "We are in discussions right now to commercialize it," said Xiulin Ruan, a Purdue professor of mechanical engineering and developer of the paint. Other reflective paints, such as The. The world's whitest white paint has been created by improving upon the formulation of an ultra-white paint developed by researchers at Purdue University in Indiana in October. The whitest paint in the world has been created in a lab at Purdue University, a paint so white that it could eventually reduce or even eliminate the need for air conditioning, scientists. Their research has been published in Cell Reports Physical Science. If you were to use this paint to cover a roof area of about 1,000 square feet, we estimate that you could get a cooling power of 10 kilowatts. Purdue Research Foundation Office of Technology Commercialization, An equal access/equal opportunity university, Maintained by Office of Strategic Communications. The higher the concentration, the easier it is for the paint to break or peel off, Li said. "Let's say it is a dry sunny day outside and the temperature is 85 degrees Fahrenheit," a surface covered with the paint from Purdue "will be around 75 degrees Fahrenheit," Peoples said. Coating buildings with this paint may one day cool them off enough to reduce the need for air conditioning, the researchers say. The award recognizes the most exciting creative developments in the connected world, and was presented to Purdue on Monday (March 13) at the 25th annual SXSW Innovation Awards Ceremony in Austin, Texas. With an appropriate particle size and a broad particle size distribution, BaSO4 nanoparticle film reaches an ultra-high solar reflectance of 97.6% and high sky window emissivity of 0.96. See how Purdue never stops in the persistent pursuit of the next giant leap athttps://stories.purdue.edu. Ruan invented the paint with his graduate students. How the whitest paint is also the coolest. (Purdue University photo/Andrea Felicelli), Purdue Research Foundation Office of Technology Commercialization, An image of the thinner paint formulation, An equal access/equal opportunity university, Maintained by Office of Strategic Communications. Sarah Kuta is a writer and editor based in Longmont, Colorado. Already featured in this year's edition of Guinness World Records and "The Late Show With Stephen Colbert," the world's whitest paint just got an upgrade. Thats why Ruans team began experimenting with other materials, pushing the limit of materials capability to scatter sunlight. Xiulin Ruan, a Purdue University professor of mechanical engineering, holds up his labs sample of the whitest paint on record. The newly- revealed ultra-white paint not only reflects 98.1 percent of sunlight, but also prevents surface infrared heat from being absorbed. so how exactly have the researchers achieved . How soon until it's on the shelves at a major retailer? When we started this project about seven years ago, we had saving energy and fighting climate change in mind, said Xiulin Ruan, a professor of mechanical engineering at Purdue, in a podcast episode of This Is Purdue.. After testing over 100 different variations, they came up with a formulation that not only reflects 98.1% of solar radiation but also makes surfaces cooler, all without . The paint, developed at Purdue University, has earned a Guinness World Records TM title. "Maryline Damour, co-founder and principal designer at Damour Drake, I love the idea of using this ultra-white paint on the entire exterior of a pool housewalls, roof and trim! Although highly desirable, full daytime sub-ambient radiative cooling in commercial-like single-layer particle-matrix paints has not been achieved. Over the years Ive painted my kitchen various shades of white, and due to a lack of natural sunlight, my kitchen always feels dark and a bit sad. Note to journalists: B-roll and photos of the white paint research are available via Google Drive. Scientists created the world's whitest paint. The research was performed at PurduesFLEX LabandRay W. Herrick LaboratoriesandtheBirck Nanotechnology Centerof PurduesDiscovery Park. Now the Purdue University researchers who created the paint have developed a new formulation that is thinner and lighter ideal for radiating heat away from cars, trains and airplanes. The original worlds whitest paint used nanoparticles of barium sulfate to reflect 98.1% of sunlight, cooling outdoor surfaces more than 4.5C below ambient temperature. Journalists visiting campus should follow visitor health guidelines. Ramona Albert, principal of Ramona Albert Architecture. The ultra-white paint was engineered with a very high percentage of barium sulfate, a chemical compound with particles of varying sizes that allow the paint to scatter more light. An airplane sitting on the tarmac on a hot summer day wont have to run its air conditioning as hard to cool the inside, saving large amounts of energy. With the ultra-white paints 98.1 percent solar reflectance, it far exceeds those requirements. When Xiulin Ruan, a professor of mechanical engineering at the school, and his graduate students began. Read more. Without the building heating up, air conditioning wouldnt have to kick on. Sarah Kuta A high concentration of particles that are also different sizes gives the paint the broadest spectral scattering, which contributes to the highest reflectance, said Joseph Peoples, a Purdue Ph.D. student in mechanical engineering. Committed to hands-on and online, real-world learning, Purdue offers a transformative education to all. Were not moving heat from the surface to the atmosphere. Its invention held exciting implications for solar power and perhaps even space exploration, and artist Anish Kapoor .css-1qproo8{-webkit-text-decoration:underline;text-decoration:underline;text-decoration-thickness:0.0625rem;text-decoration-color:#40699f;text-underline-offset:0.25rem;color:inherit;-webkit-transition:all 0.3s ease-in-out;transition:all 0.3s ease-in-out;background-image:linear-gradient( to bottom, rgba(156,181,215,.2), rgba(156,181,215,.2));-webkit-background-position:0 100%;background-position:0 100%;background-repeat:repeat-x;-webkit-background-size:0 0;background-size:0 0;padding-top:0.05rem;padding-bottom:0.05rem;}.css-1qproo8:hover{color:#000000;text-decoration-color:border-link-body-hover;-webkit-background-size:0.625rem 3.125rem;background-size:0.625rem 3.125rem;}covered his infamous Cloud Gate sculpture in Chicago with the substance. The worlds whitest paint, developed at Purdue University, is now thinner and lighter than ever before. How much each particle scatters light depends on its size, so a wider range of particle sizes allows the paint to scatter more of the light spectrum from the sun. The white. There are still a few issues that need to be addressed, but progress is being made., Either way, these Purdue researchers look forward to what the paint could accomplish. These existing paints are better than nothing, but the researchers wanted to experiment with materials that could reflect, rather than absorb, the suns UV rays. Coating buildings with this paint may one day cool them off enough to reduce the need for air conditioning, the researchers say. This light weight opens the doors to all kinds of applications, said George Chiu, a Purdue professor of mechanical engineering and an expert in inkjet printing. (Purdue University image/Joseph Peoples), An equal access/equal opportunity university, Maintained by Office of Strategic Communications. The idea was to create paint that would reflect sunlight away from a building. This makes it ideal for cooling vehicles like airplanes or cars, which reduces the reliance on air conditioning. The researchers showed in their study that like commercial paint, their barium sulfate-based paint can potentially handle outdoor conditions. The best place to put this paint would be into roofing and siding materials, so that it prevents the heat from building up on the roof and walls and radiating into the home. You can see more of her writing at kaitlinmenza.com. BaSO4 has a high electron bandgap for low solar absorptance and phonon resonance at 9 m for high sky window emissivity. In addition to thinking about passive cooling when building, this is a great way to address that point also in a low-tech way. The worlds whitest paint, developed by Purdue University researchers and recognized in Guinness World Records, has been named winner of the 2023 Innovation Award in the sustainability category by South by Southwest Conference & Festivals (SXSW).
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