These enhancement techniques rely on surface properties and interfacial phenomena, which are inherently susceptible to degradation. Here we report the enhancement of CHF and HTC using surfaces with in-plane variations in substrate thermal conductivity. These “bi-conductive” surfaces are comprised of rows of low-conductivity epoxy embedded into high-conductivity copper substrates, and therefore rely on bulk properties rather than surface properties to enhance boiling. They create spatial variations in the surface temperature during boiling, and by tuning the wavelength of these variations to coincide with the capillary length, have shown increases in HTC and CHF of greater than a factor 5x and 2x, respectively. These counterintuitive results are explained by an examination of the resulting liquid and vapor flow fields, as well as enhanced bubble dynamics. This novel enhancement mechanism has not yet been observed or studied, and holds the potential for creating robust and reliable surfaces for high-efficiency and high heat flux boiling applications over long lifetimes.
M.M.R. and M.M. conceived the project, reduced and analyzed the data, and wrote the paper. M.M.R. and J.P. fabricated the samples and conducted the experiments.
Emily Dowdall, a researcher for Reinvestment Fund, who formerly studied gentrification while working for Pew Charitable Trusts, compares Fishtown with its neighbors like Northern Liberties and Kensington. When deindustrialization hit in the early to mid-1900s, those neighborhoods suffered, leaving behind massive empty plots of land.
The two touchscreens are complemented by two tactile rotary controllers. These are reconfigurable to enable them to perform several functions, such as adjusting cabin air temperature, massage seat settings or the Terrain Response mode. Between them is a smaller dial for controlling the audio system.
Absolutely. The folks at Nanoleaf are doing incredible things, in my opinion. These lights aren’t just clever or cool art installations anymore, they could radically change the way we think about lighting in a bunch of places. I want to cover my ceiling with these lights, and I know so many people who feel the same way. But at the same time, these lights are so. much. fun. to explore when you’re having fun.
Buttons here are different from those on any other Spigen case. The power button is ridged, keeping it from getting confused with the volume buttons. The volume buttons don’t actually protrude from the body like most do, but because they wrap around the side of the phone, they’re still easy to press and tactile. There’s nothing too noteworthy about the fingerprint sensor and camera cutouts, though the recess for the fingerprint sensor does have a glossy accent.
They also found the pulley system on the second floor, left over from the building’s carriage house days, when bales of hay would be hoisted upstairs.
After 5,400 votes covering more than 100 products, the results for the inaugural “Best in Show” New Product Showcase Awards are in! The showcase provided NSC Congress & Expo exhibitors the opportunity to highlight their newest and most innovative safety products. Voting was available both online and onsite. The results are:
The name ‘Power Support’ doesn’t sound like it’d be a case company’s name. When I first heard it, I thought it produced batteries, or maybe battery cases, but it turns out that it just makes regular cases and screen protectors. Power Support has garnered itself ‘made by Google’ status on its Pixel 2 Air Jacket case, but that doesn’t necessarily make it good (as we’ve seen from Bellroy). Unfortunately, this case falls into a similar situation.
The Suedecloth fibers are created from recycled plastic bottles and crafted into a textured non-woven material that’s soft to the touch. An advanced coating system ensures the Premium Textile interior is durable and easily cleaned.
That sensor is insanely fast, and is among the fastest I’ve come across, being more or less instantaneous in my experience. Unfortunately, it’s a little diminutive and placed inside a ridge below the camera array, so you’ll need a little time before you get used to its placement.
“She said ‘I can’t believe you bought this,’” Meyers remembers now, with a laugh. But according to Meyers, her shock was not unwarranted.
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