• Graphene layer could quadruple rate of condensation heat transfer in power plants.
    26 replies, posted
[QUOTE][QUOTE][IMG]http://cdn.phys.org/newman/csz/news/800/2015/graphenelaye.jpg[/IMG] An uncoated copper condenser tube (top left) is shown next to a similar tube coated with graphene (top right). When exposed to water vapor at 100 degrees Celsius, the uncoated tube produces an inefficient water film (bottom left), while the coated shows the more desirable dropwise condensation (bottom right).[/QUOTE] Most of the world's electricity-producing power plants - whether powered by coal, natural gas, or nuclear fission - make electricity by generating steam that turns a turbine. That steam then is condensed back to water, and the cycle begins again. But the condensers that collect the steam are quite inefficient, and improving them could make a big difference in overall power plant efficiency. Now, a team of researchers at MIT has developed a way of coating these condenser surfaces with a layer of graphene, just one atom thick, and found that [B]this can improve the rate of heat transfer by a factor of four - [/B]and potentially even more than that, with further work. And unlike polymer coatings, the graphene coatings have proven to be highly durable in laboratory tests. Source: [URL]http://phys.org/news/2015-06-graphene-layer-quadruple-condensation.html[/URL] Journal: [URL]http://pubs.acs.org/doi/abs/10.1021/nl504628s[/URL][/QUOTE]
go graphine
Pretty cool stuff, graphene already has a wicked high thermal conductivity of ~2000W/m-K (That's 5 times more conductive than pure copper), along with being a near-perfect black body (Thus much easier to radiate heat better than copper).
Is there anything this stuff can't do?
[QUOTE=Atlascore;47858089]Be mass produced.[/QUOTE] Yet
[QUOTE=LoneWolf_Recon;47858077]Pretty cool stuff, graphene already has a wicked high thermal conductivity of ~2000W/m-K (That's 5 times more conductive than pure copper), along with being a near-perfect black body (Thus much easier to radiate heat better than copper).[/QUOTE] Need me a 40W dualband ISM graphene antenna AP
So basically it'll mean that the water supply for the generators won't need to be topped up as often, since the condensed water returns to the boiler sooner? Or is there more to it than that?
[QUOTE=ironman17;47859931]So basically it'll mean that the water supply for the generators won't need to be topped up as often, since the condensed water returns to the boiler sooner? Or is there more to it than that?[/QUOTE] It doesn't cool down as much during the condensation step, so it doesn't take as much energy to heat it up again, so more energy goes into pushing turbines.
So squeezing more juice out of the water is what it does? Pretty fuckin' sweet.
[QUOTE=Kylel999;47858079]Is there anything this stuff can't do?[/QUOTE] cure cancer
[QUOTE=Nebukadnezzer;47860119]cure cancer[/QUOTE] [url]http://www.manchester.ac.uk/discover/news/article/?id=13957[/url] :v:
[QUOTE=ironman17;47859931]So basically it'll mean that the water supply for the generators won't need to be topped up as often, since the condensed water returns to the boiler sooner? Or is there more to it than that?[/QUOTE] No, condensing the water at the end of the stage transfers any residual heat into the feed, when those condensers don't work as efficiently due to scaling or buildup, it decreases efficiency
This basically means you can produce the same amount of power using less fuel. Also, this technology will make all kinds of heat exchangers (like in productions using cooling water) way more energy efficient, and thus cheaper/more environmental etc etc. I did my bachelor project on cooling water systems, and most of the time heat exchanger efficiency is horrible.
I can possibly say we live in the very beginning of a sci fi world.
[QUOTE=Kylel999;47858079]Is there anything this stuff can't do?[/QUOTE] It can't bring Batmans parents back to life [editline]2nd June 2015[/editline] [QUOTE=Deathtrooper2;47861183]I can possibly say we live in the very beginning of a sci fi world.[/QUOTE] But if we are living in it, it is not science[B] fiction [/B]anymore
[QUOTE=Atlascore;47858089]Be mass produced.[/QUOTE] But dude, that's wrong. [url]http://www.popularmechanics.com/science/a14651/this-scientist-invented-a-simply-way-to-mass-produce-graphene/[/url] Scalable process to make viable quantities of graphene. Are you ready for the fucking future m80? [editline]2nd June 2015[/editline] Honestly I can't wait for Graphene to hit the mass market, it's gonna fucking change everything.
graphene-based thermal paste and component coolers WHOOO OVERCLOCKING
[QUOTE=Rixxz2;47863735]graphene-based thermal paste and component coolers WHOOO OVERCLOCKING[/QUOTE] It's hilarious that you think computers will be even remotely recognisable once graphene hits the mass market.
[QUOTE=Rapscallion92;47862581]But dude, that's wrong. [url]http://www.popularmechanics.com/science/a14651/this-scientist-invented-a-simply-way-to-mass-produce-graphene/[/url] Scalable process to make viable quantities of graphene. Are you ready for the fucking future m80? [editline]2nd June 2015[/editline] Honestly I can't wait for Graphene to hit the mass market, it's gonna fucking change everything.[/QUOTE] This hasn't been proven yet to be viable, try to have some scientific restraint (I know, I know, sensationalist headlines) [QUOTE=Rapscallion92;47863777]It's hilarious that you think computers will be even remotely recognisable once graphene hits the mass market.[/QUOTE] What? They probably will be, I mean even if quantum computers came out tomorrow at a price consumers would buy them at and were amazing, all the old ones aren't just going to evaporate and be useless
[QUOTE=Elspin;47863854]This hasn't been proven yet to be viable, try to have some scientific restraint (I know, I know, sensationalist headlines) What? They probably will be, I mean even if quantum computers came out tomorrow at a price consumers would buy them at and were amazing, all the old ones aren't just going to evaporate and be useless[/QUOTE] mate the market for all computing devices is so fast that they really won't be recognisable by the time graphene hits the mass markets, just as he said. it was less than a decade ago that we had the smartphone revolution, and after we had tablets, now we see higher uptake of more advanced components such as SSDS. And let's not forget that there is indeed a tendency to throw away old computers. it will be quite a while before we see graphene mass produced if quantum computers came out tomorrow at the same prices as normal computers, "normal" computers would be rendered obsolete immediately, the advantages of a quantum computer are so large that it would require that all firms acquire them else lose competitiveness
[QUOTE=Antlerp;47863937]mate at the market for all computing devices is so fast that they really won't be recognisable by the time graphene hits the mass markets, just as he said. it was less than a decade ago that we had the smartphone revolution, and after we had tablets, now we see higher uptake of more advanced components such as SSDS. And let's not forget that there is indeed a tendency to throw away old computers. it will be quite a while before we see graphene mass produced[/QUOTE] SSDs aren't "unrecognizable". Even SSDs used in PCI buses like we're starting to see aren't "unrecognizable". Computers aren't thrown out at nearly the frequency of smart phones anyhow and even though their quality is advancing at a relatively rapid rate, things like the iphone are recognizably the same device they were in 2007. Honestly though working in engineering I can tell you even if computers were developed that were insanely different to normal computers the adoption would be slow unless they were extremely easy to replace - I see companies using equipment from the 90s all the time. [QUOTE]if quantum computers came out tomorrow at the same prices as normal computers, "normal" computers would be rendered obsolete immediately, the advantages of a quantum computer are so large that it would require that all firms acquire them else lose competitiveness[/QUOTE] Not true at all, maybe in a bizzaro world where the performance of a company is tied to the performance of their computers but that's true in so few industries that unless quantum computers suddenly make you 100% faster at using excel and word it's not going to be a game changer.
[QUOTE=Rapscallion92;47863777]It's hilarious that you think computers will be even remotely recognisable once graphene hits the mass market.[/QUOTE] With Graphene's conductivity and thermal resistance, imagine the clock speeds we can get using a graphene-based chip instead of the current silicon chips? There was a post once saying clock speeds could hit ~500GHz [quote=ExtremeTech Report]Moving forward, it’s important to note that we’re still very much talking about an analog chip. IBM Research still hasn’t found a way of giving graphene the all-important bandgap that is required for the fabrication of digital logic, and thus graphene-based computer processors. For next-gen processors, IBM seems to be focused on carbon nanotubes, which can have a band gap, over graphene. (More on that later, when I write up my trip to IBM Research.) Assuming we can one day create large quantities of high-quality graphene, though, there are plenty of radio and optical applications that could benefit — in theory, graphene is capable of operating at frequencies as high as 500GHz, well beyond any other material currently used in RF applications.[/quote] [url=http://www.extremetech.com/extreme/175727-ibm-builds-graphene-chip-thats-10000-times-faster-using-standard-cmos-processes]Reported from IBM Research[/url] -------------------------------------- If that's what it can do for CPU, imagine the processing and visuals you'd be able to get from a GPU as well. How long would it be until we can legitimately recreate The Matrix?
[QUOTE=Elspin;47863854]This hasn't been proven yet to be viable, try to have some scientific restraint (I know, I know, sensationalist headlines) What? They probably will be, I mean even if quantum computers came out tomorrow at a price consumers would buy them at and were amazing, all the old ones aren't just going to evaporate and be useless[/QUOTE] Fuck quantum mate, I'm talking optical computation. Your computer won't even operate under the same physical principles as current computers, they won't use electricity, they will literally use light and they will make current computers look like the technological equivalent of banging stones together to start a fire. [url]http://www.extremetech.com/extreme/187746-by-2020-you-could-have-an-exascale-speed-of-light-optical-computer-on-your-desk[/url] [quote]Optalysys says that its technology is already at NASA Technology Readiness Level (TRL) 4, meaning it’s ready for full-scale testing in a laboratory environment. By January 2015, Optalysys says it will have a 340-gigaflop prototype ready to go.[B] By 2017, the company wants to have two commercial systems in place: A big data analysis system that will add 1.32 petaflops of grunt to an existing, conventional supercomputer — and a standalone Optical Solver supercomputer, which will start at 9 petaflops. Optalysys thinks its Optical Solver could scale up to 17.1 exaflops by 2020.[/B] [/quote] People need to understand that science actually IS moving forward at breakneck speed now and that we are going to witness major technological changes withing the next 20 years that will put all the previous industrial revolutions to shame.
[QUOTE=Rapscallion92;47864086]Fuck quantum mate, I'm talking optical computation. Your computer won't even operate under the same physical principles as current computers, they won't use electricity, they will literally use light and they will make current computers look like the technological equivalent of banging stones together to start a fire. [url]http://www.extremetech.com/extreme/187746-by-2020-you-could-have-an-exascale-speed-of-light-optical-computer-on-your-desk[/url] People need to understand that science actually IS moving forward at breakneck speed now and that we are going to witness major technological changes withing the next 20 years that will put all the previous industrial revolutions to shame.[/QUOTE] This is why engineers are often frustrated by enthusiasts, they make extremely aggressive assertions based on unproven technology that they saw in a news article one time. That company is making a lot of really bold claims that while not entirely impossible are unlikely to be anywhere near what they say in that time frame. There's also a lot of issues they don't address when speaking about that particular product at all, so I'm highly skeptical that their product wouldn't be bottle-necked by the supporting technology around the processor they're describing, which they make no claims to have improved.
[QUOTE=Nebukadnezzer;47860119]cure cancer[/QUOTE] Was gonna joke about this but then I remembered that it actually can
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