buildings and clothes could melt to save energy - energy storage solutions

The sun has risen and a new building on the campus of the University of Washington in Seattle is about to melt.
No design defects & colon;
Encapsulated in walls and ceilings is a gel that freezes at night and melts with the warmth of the day.
Called phase change material (PCM)
This gel will help reduce the energy needed to cool the office space of the building-which is scheduled to accommodate the Department of Molecular Engineering at the completion of this month-up to 98 cents.
PCMs don't have to be that high-
Of course, technology like this.
For thousands of years, we have been using phase change material ice melted at 0 °c to keep it cool.
However, advances in material science and rising energy costs have driven the development of PCMs, which work at different temperatures to help people and goods stay cool or warm, or store energy.
PCMs is an attractive source of energy
Depositors keep close because they can absorb or release a lot of energy
Constant temperature.
Kloni, Center for Sustainable Energy Systems, fraunhove, Cambridge, said on January: "to melt ice requires the same energy as to heat water of the same volume 82 °c, Massachusetts, 30 years ago, he began to explore the potential of PCMs to see Beeswax as a way to store sunlight heat.
The reason PCMs are so useful is because when a substance melts, energy is needed to break the molecular bond between atoms and release when the bond is set.
The "bioPCM" gel in the university building from vegetable oil will "charge" every night, when the window is automatically opened and the building is washed with cold outdoor air.
The solid gel then absorbs heat when melted the next day.
The idea is the same as the use of thick concrete or adobe walls, which can reduce indoor temperature fluctuations but require only a small part of the material.
"Our bioPCM is 1.
25 cm thick, but it works just like the thermal mass of 25 cm concrete, "said Peter Horwath, founder of phase change energy solutions based in Asheboro, North Carolina.
The gel on the walls of the building was "charged" every night in the cold night air, and then melted during the day. A recent report by technology research firm Lux research predicts that the use of phase-changing materials in buildings will grow from close to zero today to the dollar;
Sales by 2020 were 0. 13 billion.
At the same time, some other applications are emerging. UK-
Star-based refrigeration systems use carbon dioxide to keep the data center cool, which changes from liquid to gas at very low temperatures.
The heat released by today's heat
Even with state-of-the-art water cooling systems, the performance Server Farm is overwhelmed.
Delivering carbon dioxide through a heat exchanger, the company recently demonstrated the ability to extract twice as much heat from a computer as the system currently in use.
In western China, PCMs extracted from yak butter and local vegetable oil help yak herdsmen keep warm.
The material is wrapped in plastic and then woven into traditional clothing.
When the Herdsmen try to walk to the Mountain Ranch, it melts and is suppressed when they stop moving
The heat slowly releases and keeps them warm as they look at their cattle.
More than 100 families are now using these materials as part of an ongoing pilot project that also includes bed rolls heated with stoves during the day to keep people warm at night.
"Families who use them are starting to see a big difference in the amount of fuel they need," says Scot Frank, also based at one Earth design in Cambridge, which has developed the compound.
Another promising application for PCMs is the provision of vaccines in developing countries.
Vaccines need to be kept refrigerated during transport, which is a challenge in countries with limited refrigeration.
They are usually packed in ice, but their effectiveness may be seriously affected if they freeze.
S. packaging manufacturer Sonoco said that using the material at the stage of change between 4 and 8 °c, it has developed a solution that will allow the vaccine to cool down for six days.
Sonoco is now using
In order to meet the standards of the World Health Organization, PATH, a profitable biotechnology developer.
Energy storage using PCMs can also promote solar power generation.
Today, solar-powered systems rely on liquid salt to store heat.
This allows power plants to generate energy when the sun does not shine, but requires a lot of liquid and a lot
Insulation storage facilities.
The German manufacturer SGL Carbon says it can be reduced by about two by using a chemical in the change phase-thirds.
The company is currently testing a prototype.
For Kosny, all the recent interest in PCMs makes sense.
"Ten years ago, when I argued about the development of the stage --
"There is no interest in changing the material," he said . ".
"It seems that we can't develop these materials fast enough now.