CU Boulder and University of Wyoming engineers have successfully scaled up an innovative water-cooling system capable of providing continuous day-and-night radiative cooling for structures. The advance could increase the efficiency of power generation plants in summer and lead to more efficient, environmentally-friendly temperature control for homes, businesses, utilities and industries.
The new research demonstrates how the low-cost hybrid organic-inorganic radiative cooling metamaterial, which debuted in 2017, can be scaled into a roughly 140-square-foot array—small enough to fit on most rooftops—and act as a kind of natural air conditioner with almost no consumption of electricity.
“You could place these panels on the roof of a single-family home and satisfy its cooling requirements,” said Dongliang Zhao, lead author of the study and a postdoctoral researcher in CU Boulder’s Department of Mechanical Engineering.
The technology, which takes advantage of natural radiative cooling principles, is described today in the journal Joule.
“As Earth’s temperature warms due to the absorbed heat from the sunlight during the day, it continuously emits infrared light to the cold universe all the time,” said Professor Ronggui Yang of Mechanical Engineering and lead author of the study. “During the night, Earth cools down due to the emission without the sunshine.”
The researchers’ film-like material reflects incoming almost all sunlight while still allowing an object’s stored heat to escape as much as possible, keeping it cooler than ambient air even in the midday sun.
“The material, which we can now produce at low cost using the current roll-to-roll manufacturing techniques, offers significant advantages.” said Associate Professor Xiaobo Yin of Mechanical Engineering and CU Boulder’s Materials Science and Engineering Program.
“We can now apply these materials on building roof tops, and even build large-scale water cooling systems like this one with significant advantages over the conventional air conditioning systems, which require high amounts of electricity to function,” said Associate Professor Gang Tan of the University of Wyoming’s Department of Civil and Architectural Engineering.
The researchers tested their system outdoors in a variety of weather conditions, including wind, precipitation and humidity. In experiments conducted in August and September 2017, their proprietary RadiCold module kept a container of water covered by the metamaterial 20 degrees Fahrenheit cooler than the ambient air between 12:30 p.m. and 3 p.m., the most intense summer sunlight of the day.
The researchers also introduced an element of dynamic scheduling to their technology, anticipating that structures such as offices may have limited or no cooling demand at night. In a building-integrated system, however, a cold storage unit could be added to capture the cold through heat transfer fluid such as water in this system and allow it to be retrieved during the subsequent day to reduce the cooling strain during peak demand periods.
“We have built a module that performs in real-world, practical situations,” said Yang. “We have moved quite far and fast from a materials level to a system level.”
The RadiCold module could become a viable solution for supplemental cooling for single-family homes, businesses, power plants, municipal utilities and data center facilities among other potential applications, Yang said.
Learn more: Engineers scale up a low-cost, energy saving cooling system
The Latest on: Radiative cooling technology
[google_news title=”” keyword=”radiative cooling technology” num_posts=”10″ blurb_length=”0″ show_thumb=”left”]
via Google News
The Latest on: Radiative cooling technology
- How to harvest moisture from the atmosphereon May 13, 2024 at 1:53 pm
Luke Skywalker, the hero of the original “Star Wars" trilogy, grows up on his uncle’s moisture farm, extracting water from Tatooine’s arid atmosphere. The residents of the desert world Arrakis, ...
- 0% Bonus For 100% Work From Home IT Employees In Pune: Is It Unfair?on May 13, 2024 at 1:06 pm
Several prominent companies in the Information Technology (IT) sector have recently mandated a return to office for employees, discontinuing the option of remote work. This decision has sparked ...
- i2Cool Attracts Close to HKD100 Million in Series A Financingon May 12, 2024 at 11:22 pm
Cool, a company specializing in electricity-free cooling technology, has attracted nearly HKD100 million (USD13.8 million) in its Series A round financing ...
- Could solar radiation management cool the planet? FT Rethinkon May 12, 2024 at 8:01 pm
One of the more niche climate cooling solutions, SRM works on the principle that the Earth can be cooled by reflecting some of the Sun’s rays back into space. But as the FT’s Aime Williams explains, i ...
- Revolutionary cellulose aerogel film offers sustainable daytime radiative coolingon May 9, 2024 at 4:59 pm
A breakthrough in passive cooling technology, a cellulose aerogel film provides a sustainable solution for daytime radiative cooling, promising energy savings and environmental benefits.
- Towngas backs TERA-Award winner i2Cool in Series A to drive global green energy expansionon May 9, 2024 at 8:12 am
The Hong Kong and China Gas Company Limited (Towngas) is pleased to announce its participation in the Series A funding round ...
- Researchers demonstrate enhanced radiative heat transfer for nanodeviceson May 9, 2024 at 8:01 am
Researchers from Japan have been working hard to keep their cool—or at least—keep their nanodevices from overheating. By adding a tiny coating of silicon dioxide to micro-sized silicon structures, ...
- i2Cool Attracts Close to HKD100 Million in Series A Financing to Propel the Development of Green and Energy-Efficient Radiant Cooling Solutionson May 8, 2024 at 7:50 pm
Cool, a company specializing in electricity-free cooling technology, has attracted nearly HKD100 million (USD13.8 million) in its Series A round financing from Trustar Capital (the private equity ...
- i2Cool Attracts Close to HKD100 Million in Series A Financing to Propel the Development of Green and Energy-Efficient Radiative Cooling Solutionson May 7, 2024 at 5:00 pm
PRNewswire/ -- i2Cool, a company specializing in electricity-free cooling technology, has attracted nearly HKD100 million (USD13.8 million) in its Series A round financing from Trustar Capital (the ...
via Bing News