You can save a website to your iPad's home screen and use it just like an app. Doing this is a great way to get quick access to your favorite sites, especially ones you use throughout the day. It also means you can create a folder full of websites on your iPad. You can also drag the website's app icon to the dock at the bottom of the home screen.
Jan 18, 2019. Converts Heat Into Cold Via A Stirling Engine, And Could Just Save The Planet. By 2050, almost six billion air conditioners could eat 37% of global. That's because as India and China get richer — and the planet gets hotter. Picture on our website) in which it continues to be amplified the feedback. The Dodo serves up emotionally and visually compelling, highly sharable animal-related stories and videos to help make caring about animals a viral cause.
When you launch a website from your home screen, you open the Safari browser with a link to the website. So after your session, you can either quit Safari or continue browsing the web as usual. Here's how to keep your most-used sites handy at all times.
Pinning a Website to Your Home Screen
- Open the website you want to save to the home screen in the Safari browser.
- Tap the Share button.
- A window will appear with the name of the site, the URL, and an icon. To give the link a new name, tap on the name field.
- Tap the Add button in the top-right corner of the window to complete the task.
- Safari will close, and you will see an icon for the website on your home screen.
What Else Can You Do With the Share Button?
Safari's Share menu has several more options to save, share, and read web pages. Here are some other things you can do through this screen:
- Message. Use this option to send a link to a friend via text message.
- Mail. This option is similar to Message, but instead of sending a text message, you can email a friend the link. This option brings up the normal compose email screen, so you can type out a complete message to accompany the link.
- AirDrop. AirDrop lets you quickly share files with iPhones and iPads nearby as long as they also have AirDrop activate. They will usually need to be in your contacts list, although you can set AirDrop to detect any nearby device. Their contact picture will show up in the AirDrop area (if they don't have a picture, it will show their initials) and you can tap the icon to share a website, photo, or just about anything with them.
- Add to Notes. When you don't want to bookmark a website, but you still want to save the link for later reference, tap this option. Add to Reading List is also a good option for this, but by adding a Note, you can get to the link from almost any device using iCloud.
- Facebook. If you have your iPad connected to Facebook, you can quickly post a link to the article on your feed. You can also share on Twitter.
- Add to iBooks as PDF. You can convert any web page to a PDF with this option. Use this option for really long articles, and because it copies everything on the web page, you will get all photos, images, and diagrams as well.
- Print. If you have an AirPrint printer, you can quickly print out a web page.
- Request Desktop Site. If you hit a web page that stubbornly gives you a mobile-optimized and not-quite-fully-functional page, you can use this feature to request the desktop version.
By 2050, almost six billion air conditioners could eat 37% of global electricity, according to the International Energy Agency. That's because as India and China get richer -- and the planet gets hotter -- people around the globe are buying A/C units at levels approaching the United States.
This is an environmental catastrophe waiting to happen.
But one startup from the tiny town of Enschede in the Netherlands aims to change that via a technological marvel that turns heat into cold without requiring energy itself -- or any of the nasty gases that most A/C units use today. The technology, which SoundEnergy unveiled at CES last week in Las Vegas, uses a process similar to a Stirling Engine, which was first conceptualized 200 years ago in the early 1800s.
It sounds like magic, or a perpetual motion machine, but it relies on well-understood principles of thermo acoustics and was originally developed in U.S. Department of Defense research, the company says.
The first step is transforming heat into sound.
So far, so good. SoundEnergy has built a machine to turn heat into mechanical energy.
But eventually, you want more. You don't want to just remove heat ... you also want to return cold. And, according to Hamans, SoundEnergy's device does that as well.
'This huge mechanical power will be transformed into a delta T [lower temperature] down in the last two vessels by connecting them in reverse,' he told me via email this week. 'The sound waves produce cold by distracting the heat from the particles like in a classical Stirling cycle.'
If you don't understand how that works, you're not alone. I don't either. Hamans tried to comfort me that saying that only about two or three dozen people globally, all experts in thermo-acoustics, truly understand this process.
Global energy use for air conditioning is skyrocketing, according to the International Energy Agency.
International Energy AgencyIt seems quasi-magical, but the company has been shipping commercial product since last September. SoundEnergy's first customer was Dubai, which purchased a unit for cooling in a plant which condenses drinkable water from the air. Another government has purchased a unit for cooling in a remote, off-grid space.
One of the reasons why?
This high-tech A/C unit does not itself require power.
'The system itself does not consume electricity/energy,' Hamans told me via email. 'It takes 100% of stack-emitted waste energy, or solar thermal ... and converts that for 40-50% [efficiency].'
The rest of the heat can get discharged into a cooling pool, or the atmosphere, or, if absolutely required, cooled with a standard A/C unit. The only parts that potentially use external power to run would be a small controller unit for more precise calibration, and of course pumps to circulate heat-bearing fluid in and cold fluid out.
The system is ideal for industrial use where high-temperature motors and equipment needs to be cooled, but can also be used for large multi-family housing units. Large units run about $50,000, though prices will drop with scale, and smaller units for residential/consumer purposes are possible at much lower prices.
Hamans says the systems pay for themselves.
'For commercial and industrial use we are talking about only a few years to five years payback time,' he told me. '[Also factor] in that our systems have an expected life time of 20-30 years, which to our knowledge is substantially longer than electric compressor based systems.'
Financial payback is one thing.
But if the company can help solve the global energy challenges while also helping us cool our homes, offices, and factories efficiently, the environmental payback may very well outweigh the financial considerations.
The company's next steps?
'Our strategy so far is demonstrating commercial and technical feasibility per industry, upscaling from a few launch customers to multiple, globally,' says Hamans. 'These industries include but are not limited to heavy industries like (petro)chemical and process industries, food & beverage, textiles, metal, hydrogen, and mobile/stand alone systems which can operate in remote areas. Further we can also cool spaces/buildings, and cold chains for fresh produce or medical supplies, particularly also in hot areas, grid independent.'
Those are big plans.
But unaffiliated experts believe that the tech is real, and that there is significant opportunity here.
I spoke to Steven Garrett, former professor of acoustics at Penn State. He's also an adjunct professor at the University of Massachusetts, and an associate researcher at an acoustical lab associated with the University of Mans in France. Garrett knows what he's talking about: he put a cooler built with related technology into NASA's space shuttle in 1982, another into a Navy destroyer, and worked with Ben & Jerry's on innovative cooling concepts in the early 2000s.
Garrett strongly vouched for the technology, and especially the originator of it, Kees de Blok.
'There are quacks all over the place in thermo acoustics,' Garrett told me. 'But de Blok is better than I am ... he is the real thing. What he has done is amazing.'
De Blok is SoundEnergy's CRO. He also founded Aster Thermoacoustics, a research company formed to explore related technologies.
'You must be critical when examining the field,' Garrett continued. 'But de Blok is not a quack. He did not get to that device overnight, and his credibility is the highest in the field.'
The technology is currently in use in multiple facilities around the globe, including a school in the Netherlands. The system is maintenance-free and requires almost no energy to run, according to the school.