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+ - Scientists develop paint to help cool the planet->

Submitted by AaronW
AaronW (33736) writes "Engineers at Stanford University have developed an ultrathin, multilayered, nanophotonic material that not only reflects heat away from buildings but also directs internal heat away from the building using a system called "photonic radiative cooling." The coating is capable of reflecting away 97% of incoming sunlight and when combined with the photonic radiative cooling system it becomes cooler than the surrounding air by around 9F (5C). The material is designed to radiate heat into space at a precise frequency that allows it to pass through the atmosphere without warming it.

The material is designed to be cost effective for large-scale deployments."

Link to Original Source

Comment: Re:next gen batteries (Score 2) 281

I spend 5 seconds plugging in my car when I get home and 5 seconds unplugging in the morning. I spend far less time than I spent filling my gas car up where I'd have to go out of my way to a gas station, wait in line and fill up. Yes, there's a bit of a wait on long trips, but for most of my driving I spend far less time. When battery swapping is available it will take me roughly 90 seconds without me ever having to step out of my car (and for those who don't know, battery swapping includes getting your original battery back on the return trip).

Comment: Re:I bet Infosys and Tata are dancing in the stree (Score 2) 186

And how many of these require congress? The executive's job is to execute the laws. He can pass or veto a bill but he can't write them. He can choose how to execute the law, what laws to prioritize or not but his power is limited.

This is especially true for anything tax or budget related. All spending bills must originate in the house. Ever since he swore the oath of office the Republicans have bent over backwards with fillibuster threats for just about everything, even the stuff they wanted. The healthcare law only passed because there was only a brief window when democrats had a fillibuster-proof majority.

A bipartisan comprehensive immigration bill was passed ages ago in the Senate but what has the republican-led house done on it? Absolutely nothing.

It also doesn't help that a huge percentage of department heads have been blocked because Republicans have used the fillibuster to block many of these appointments, many since Obama began his first term.

The republicans have been up in arms and done everything to prevent him from doing his job out of spite, making constant racist comments about his birth, or that he's Muslim, etc. etc with Fox News blowing the horn for them with crazy conspiracy theories.

The republicans blame the president about illegals and children crossing the border. The border control says they need more agents and more money to better control the problem. The president says to provide more money. The republicans say no more money and continue to blame the president for something that needs funding which must originate in the republican dominated house.

Comment: Re:Wont They Die? (Score 1) 332

by AaronW (#48438777) Attached to: The EU Has a Plan To Break Up Google

They also are making a fair amount of revenue selling services. For example, my employer had so many problems with Microsoft Sharepoint that they switched to Google Drive. I use both Google and Microsoft's services. Microsoft's (at least Email) leaves a lot to be desired.

Google is also in the transaction business like Paypal and Amazon as well as hosting services.

For another organization I'm looking into Google services now to handle documents and email.

Comment: Re:don't tax alternative energy and transportation (Score 1) 516

by AaronW (#48424037) Attached to: Rooftop Solar Could Reach Price Parity In the US By 2016

There are a lot of other costs involved with coal. Unlike China, the US requires scrubbers on all of the smoke stacks, then there's the storage of all of the ash left over, transportation costs for the coal, etc. That's why natural gas is overtaking coal. You just shove natural gas into a pipe and pull it out the other end. No long line of train cars, no scrubbers, no ash to deal with.

Comment: Re:Who pays for the infrastructure costs? (Score 1) 516

by AaronW (#48423991) Attached to: Rooftop Solar Could Reach Price Parity In the US By 2016

Your link is outdated and only considers a limited number of battery technologies, i.e. lead acid. There are many promising grid storage type batteries that are cheap and can handle far more cycles with greater energy density, such as liquid metal and liquid salt batteries. For areas with hydroelectric power there's pumped storage which is around 70% efficient. With pumped storage when there's excess supply water is pumped back into the resivoir. There's also flywheel storage, compressed air, molten salt, gravitational potential energy and many other storage methods. See http://en.wikipedia.org/wiki/Energy_storage.

Comment: Re:They WILL FIght Back (Score 1) 516

by AaronW (#48423187) Attached to: Rooftop Solar Could Reach Price Parity In the US By 2016

It makes me glad that in my state they have added rules limiting stupid things HOAs try and do. HOAs cannot prevent solar from being installed and they must allow EV charging to be installed. The latest HOA laws prevent HOAs from requiring residents to water or prevent from putting in plants that require little water... we're in a major drought and some HOAs tried to fine people who wouldn't water their lawns or who put in low-water plants.

Thankfully I don't have to deal with an HOA.

Comment: Re:How do I refill it? (Score 1) 194

by AaronW (#48408373) Attached to: Toyota Names Upcoming Hydrogen Fuel Cell Car

The problem is that it takes a horrendous amount of electricity for electrolysis compared to steam reforming and it is far far more expensive, that's even with the catalysts available. 95% of all commercial hydrogen produced uses steam reformed natural gas. The cost difference is very significant.

Comment: Re:Chicken/Egg (Score 1) 194

by AaronW (#48408367) Attached to: Toyota Names Upcoming Hydrogen Fuel Cell Car

Unlike EVs a lot more public refueling stations are required. For example with my Tesla I do most of my charging at home overnight where it takes me 5 seconds to plug in and 5 seconds to unplug. The rapid charging stations and battery swap stations (when they're built) are only needed for long trips. For HFC vehicles a lot more filling stations will be required since most people will not be filling up at home or work. Many companies (though not mine) offer EV charging stations to their employees so they can charge their cars while they work. For people who live in apartment complexes it is a bit more complicated, but as time goes on they'll start installing charging stations there for their tenants, in fact this is already happening.

A hydrogen filling station costs far far more than an EV charging station, anywhere from 500K to 5 million. It's estimated that Tesla pays around $100-200K for their supercharger stations which are generally only needed for long distance travel. Slower commercial charging stations cost a few thousand dollars. The cost of the charging stations is also dropping. An EV charging station can be built any place there's electricity. I have a coworker who just uses a regular 120v outlet to charge her Leaf. In my case I can charge just about anywhere. I can charge at most RV parks though it's a lot slower than the supercharger stations.

The key elements in human thinking are not numbers but labels of fuzzy sets. -- L. Zadeh

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