Engineers at Oregon State University have found a new way to induce and control boiling bubble formation, that may allow everything from industrial-sized boilers to advanced electronics to work better and last longer.
Advances in this technology have been published in Scientific Reports and a patent application filed.
The concept could be useful in two ways, researchers say – either to boil water and create steam more readily, like in a boiler or a clothing iron; or with a product such as an electronics device to release heat more readily while working at a cooler temperature.
“One of the key limitations for electronic devices is the heat they generate, and something that helps dissipate that heat will help them operate at faster speeds and prevent failure,” said Chih-hung Chang, a professor of electrical engineering in the OSU College of Engineering. “The more bubbles you can generate, the more cooling you can achieve.
“On the other hand, if you want to create steam at a lower surface temperature, this approach should be very useful in boilers and improve their efficiency. We’ve already shown that it can be done on large surfaces and should be able to scale up in size to commercial use.”
The new approach is based on the use of piezoelectric inkjet printing to create hydrophobic polymer “dots” on a substrate, and then deposit a hydrophilic zinc oxide nanostructure on top of that. The zinc oxide nanostructure only grows in the area without dots. By controlling both the hydrophobic and hydrophilic structure of the material, bubble formation can be precisely controlled and manipulated for the desired goal.
This technology allows researchers to control both boiling and condensation processes, as well as spatial bubble nucleation sites, bubble onset and departure frequency, heat transfer coefficient and critical heat flux for the first time.
In electronics, engineers say this technology may have applications with some types of solar energy, advanced lasers, radars, and power electronics – anywhere it’s necessary to dissipate high heat levels.
In industry, a significant possibility is more efficient operation of the steam boilers used to produce electricity in large electric generating facilities.
The Latest on: Boiling bubble formation
via Google News
The Latest on: Boiling bubble formation
- Boiling 'baby bubble' where stars are born comes into viewon June 28, 2021 at 4:15 am
The new image shows that the star cluster is surrounded by a single bubble of gas, not two as previously hypothesized, and that it's likely to keep birthing stars well into the future. "When massive ...
- Astronomers peer into galactic bubbles where stars burst into lifeon June 24, 2021 at 3:31 am
The team used light from the whole electromagnetic spectrum to capture a high-resolution view of the Westerlund 2 star cluster.
- Astronomers get the clearest view yet of a boiling cauldron where stars are formedon June 23, 2021 at 10:46 am
Using data collected by the Stratospheric Observatory for Infrared Astronomy (SOFIA) telescope, University of Maryland researchers to understand more about the star forming process.
- Boiling 'baby bubble' where stars are born comes into viewon June 23, 2021 at 9:56 am
the bubble "popped" on one side, sending a stream of charged gas called plasma streaming into space and slowing down star formation temporarily. The birth of a new bright star 200,000 to 300,000 ...
- SOFIA Captures First Clear View of a Boiling Cosmic Cauldron Where Stars Are Bornon June 23, 2021 at 6:00 am
UMD-led team used NASA's SOFIA telescope to capture high-resolution details of a star nursery in the Milky Way. University of Maryland researchers created the first high-resolution image of an ...
- First clear view of a boiling cauldron where stars are bornon June 23, 2021 at 6:00 am
University of Maryland researchers created the first high-resolution image of an expanding bubble of hot plasma and ionized gas where stars are born. Previous low-resolution images did not clearly ...
- Clear view of a boiling cauldron where stars are bornon June 22, 2021 at 5:00 pm
Astronomers hav created a high-resolution image of an expanding bubble of hot plasma and ionized gas where stars are born.
via Bing News