Latest News

  • Home
  • Global
  • ‘Sun in a box’ system can beat Li-ion batteries over store renewable energy: Study
‘Sun in a box’ system can beat Li-ion batteries over store renewable energy: Study
11 December 2018 IST
‘Sun in a box’ system can beat Li-ion batteries over store renewable energy: Study

The researchers from Massachusetts Institute of Technology (MIT) estimate that such a system would be vastly more affordable than lithium-ion batteries, that has long been considered a viable method for renewable energy storage.
 

 
 

MIT scientists have designed a system that could store renewable energy, such as solar and wind power, and deliver it back into an electric grid on demand. The system, described in the journal Energy and Environmental Science, may be designed to power a small city not just when the sun is up or the wind is high, but around the clock.
 
The new design stores heat generated by excess electricity from solar or wind power in large tanks of white-hot molten silicon, and then converts the light from the glowing metal back into electricity when it’s needed. The researchers from Massachusetts Institute of Technology (MIT) in the US estimate that such a system would be vastly more affordable than lithium-ion batteries, which have been proposed as a viable, though expensive, method to store renewable energy. They also estimate that the system would cost about half as much as pumped hydroelectric storage – the cheapest form of grid-scale energy storage to date.
 
“Even if we wanted to run the grid on renewables right now we couldn’t, because you’d need fossil-fuelled turbines to make up for the fact that the renewable supply cannot be dispatched on demand,” said Asegun Henry, Associate Professor at MIT. “We are developing a new technology that, if successful, would solve this most important and critical problem in energy and climate change, namely, the storage problem,” Henry said. The new storage system stems from a project in which the researchers looked for ways to increase the efficiency of a form of renewable energy known as concentrated solar power.
 
Unlike conventional solar plants that use solar panels to convert light directly into electricity, concentrated solar power requires vast fields of huge mirrors that concentrate sunlight onto a central tower, where the light is converted into heat that is eventually turned into electricity. “The reason that technology is interesting is, once you do this process of focusing the light to get heat, you can store heat much more cheaply than you can store electricity,” Henry said.
 
Concentrated solar plants store solar heat in large tanks filled with molten salt, which is heated to high temperatures of about 538 degrees Celsius. When electricity is needed, the hot salt is pumped through a heat exchanger, which transfers the salt’s heat into steam. A turbine then turns that steam into electricity. The researchers have outlined their concept for a new renewable energy storage system, which they call TEGS-MPV, or Thermal Energy Grid Storage-Multi-Junction Photovoltaics.
 
 

 
 

Instead of using fields of mirrors and a central tower to concentrate heat, they propose converting electricity generated by any renewable source, such as sunlight or wind, into thermal energy, via a process by which an electric current passes through a heating element. The system could be paired with existing renewable energy systems, such as solar cells, to capture excess electricity during the day and store it for later use.
 
The system would consist of a large, heavily insulated, 10-metre-wide tank made from graphite and filled with liquid silicon, kept at a “cold” temperature of almost 1927 degrees Celsius. A bank of tubes, exposed to heating elements, then connects this cold tank to a second, “hot” tank. When electricity from the town’s solar cells comes into the system, this energy is converted to heat in the heating elements.
 

 
 
 
 
 

Related Topics

 
 
 

Trending News & Articles

 Article
'Worse than prison': A rare look inside China's detention camps to 'brainwash' Muslims

ALMATY: Hour upon hour, day upon day, Omir Bekali and other detainees in far western China's new indoctrination camps had to disavow the...

Recently posted . 181K views . 1 min read
 

 Article
What The Shape Of Your Belly Button Says About Your Health

If you have payed attention to the belly buttons of people on the beach or the members of your family, you have probably noticed that they have different shapes and...

Recently posted . 7K views . 2 min read
 

 Article
Top 10 Best Gym Equipment Brands in India 2018

Body fitness is one thing that everyone wants to maintain irrespective of age. Going to the gym and doing some great exercise always helps to maintain your body fit...

Recently posted . 3K views . 2 min read
 

 Article
Top 10 Horrifying Acts of Chemical Warfare and Gas Attacks

In this age of terror, there might be nothing more terrifying than the thought of an attack carried out with chemical weapons. We’ve all heard the horrific ...

Recently posted . 3K views . 4 min read
 

 
 

More in Global

 Article
Giant Tortoise, Thought To Be Extinct, Found After 100 Years

The adult female tortoise was found on the island of Fernandina in the west of the Pacific archipelago, and is believed to be a Fernandina Giant Tortoise, also kn...

Recently posted. 411 views . 1 min read
 

 Article
TDS Controller VS Mineralizer For RO, Which Is Better ?

What Is The Difference Between A TDS Controller And Mineralizer?

Recently posted. 798 views . 0 min read
 

 Article
Delhi’s Chhavi Gupta cracks CAT with 100 percentile, had cleared IIT-JEE in first attempt

While CAT 2017 also had 20 students in the 100 percentile like the previous year, this year saw two women and three non-engineer candidates made it to the list un...

Recently posted. 555 views . 1 min read
 

 Video
Motivational Video SPIRIT



Recently posted . 671 views
 

 Photo
7 Animals Essential For Human Survival



Recently posted . 915 views
 

 Article
The kingdom of women: the society where a man is never the boss

It’s a place where women rule, marriage doesn’t exist and everything follows the maternal bloodline. But is it as good for women as it sounds – ...

Recently posted. 569 views . 1 min read
 

 Article
Pakistani TV Anchor Confuses Apple Inc with Fruit, Netizens Left in Splits

'Apple's income is larger than Pakistan's budget', the panelist had been saying. At this point, the anchor interjected, 'Yes, I have heard tha...

Recently posted. 443 views . 1 min read
 

 
 
 

   Prashnavali

  Thought of the Day

🌹🍃🌺🌿💐🌹☘🌺🌿🌹 ✍🏾दान करने से रुपया जाता है! "लक्ष्मी" नहीं!... घड़ी बंद करने से घड़ी बंद होती है! "समय" नहीं!... झूठ छुपाने से झूठ छुपता है! "सच" नहीं !... माना दुनियाँ बुरी है ,सब जगह धोखा है, लेकिन हम तो अच्छे बने ,हमें किसने रोका है ! 🌹🍃🌺🌿💐🌹☘🌺 🙏🌞 सुप्रभात🌞🙏
Anonymous

Be the first one to comment on this story

Close
Post Comment
Shibu Chandran
2 hours ago

Serving political interests in another person's illness is the lowest form of human value. A 70+ y old lady has cancer.

November 28, 2016 05:00 IST
Shibu Chandran
2 hours ago

Serving political interests in another person's illness is the lowest form of human value. A 70+ y old lady has cancer.

November 28, 2016 05:00 IST
Shibu Chandran
2 hours ago

Serving political interests in another person's illness is the lowest form of human value. A 70+ y old lady has cancer.

November 28, 2016 05:00 IST
Shibu Chandran
2 hours ago

Serving political interests in another person's illness is the lowest form of human value. A 70+ y old lady has cancer.

November 28, 2016 05:00 IST


ads
Back To Top