Forum for Science, Industry and Business

Sponsored by:     3M 
Search our Site:

 

Hydrogen Accumulation

07.03.2006


The hydrogen storage devices developed and patented by the scientists of the Academy of Advanced Technologies (Moscow) break all records. These are hydrogen accumulators based on microporous structures, first of all - microspheres and capillaries. Despite seeming elegance and fragility of its “filling”, the device strongly and safely retains a lot of hydrogen in a small volume. A lot of hydrogen means more than 45 grams per litre. By the way, this figure is planned by the US Department of Energy only for 2010.



These accumulators’ principle of operation was described by the author A. Chabak, Doctor of Science (Engineering) at the recent international forum “Hydrogen Technologies for Power Generation” in Moscow. Speaking simplistically, these devices operate as follows.

The covering balloon is filled with some microporous structure. These can be glass microspheres or thin capillaries made of special lightweight and durable plastics, for example, of polymers based on poly-p-phenyleneterephthalamide, better known as aramid, terlon, kevlar.


Microspheres and capillaries are hollow inside, and on the outside, they are fastened to each other with the help of a current conducting material. This can be metal, graphite or conductive adhesive.

First, the balloon and its content are heated rather heavily and filled with hydrogen under pressure. Hydrogen is penetrating through glass and plastic walls inside spheres and capillaries, filling them up. Then the device is cooled off, and the precious gas remains in the cold trap – spherules or capillaries. Of course, part of hydrogen also remains inside the balloon, in the space between microspheres.

Now, to obtain hydrogen, these microcontainers should simply be heated. To this end, it is sufficient to pass current through the material fastening capillaries or spherules. Along with that, the entire microstructure would get warm, and hydrogen will be able to “leak” outside the microcontainers. First, it would leak into the internal space of the balloon, and from it – directly to the engine. As a result, such accumulator allows at any time to feed hydrogen from a peculiar buffer capacity – space between microspheres. Heating allows to “feed” into this capacity if required. Other technologies of hydrogen filling and extracting from microcontainers are also being developed.

According to the authors, such accumulator cartridges can be installed, for example, into containers of 20x20 centimeters in size and 1 meter long, 16 pieces per each container. Three containers of this kind would find room for 4.3 to 6.35 kilograms of hydrogen. It is quite safe to keep hydrogen in these containers. In contrast to balloons, where all of the gas is stored in a single common volume (and if it explodes – all of it would blow up at once), in this case, hydrogen is distributed among multiple smallest volumes, and the explosion, at least a powerful one, is practically excluded. This is of no small importance, particularly, in case of hydrogen.

Sergey Komarov | alfa
Further information:
http://www.informnauka.ru

More articles from Power and Electrical Engineering:

nachricht Scientists create biodegradable, paper-based biobatteries
08.08.2018 | Binghamton University

nachricht Ricocheting radio waves monitor the tiniest movements in a room
07.08.2018 | Duke University

All articles from Power and Electrical Engineering >>>

The most recent press releases about innovation >>>

Die letzten 5 Focus-News des innovations-reports im Überblick:

Im Focus: Unraveling the nature of 'whistlers' from space in the lab

A new study sheds light on how ultralow frequency radio waves and plasmas interact

Scientists at the University of California, Los Angeles present new research on a curious cosmic phenomenon known as "whistlers" -- very low frequency packets...

Im Focus: New interactive machine learning tool makes car designs more aerodynamic

Scientists develop first tool to use machine learning methods to compute flow around interactively designable 3D objects. Tool will be presented at this year’s prestigious SIGGRAPH conference.

When engineers or designers want to test the aerodynamic properties of the newly designed shape of a car, airplane, or other object, they would normally model...

Im Focus: Robots as 'pump attendants': TU Graz develops robot-controlled rapid charging system for e-vehicles

Researchers from TU Graz and their industry partners have unveiled a world first: the prototype of a robot-controlled, high-speed combined charging system (CCS) for electric vehicles that enables series charging of cars in various parking positions.

Global demand for electric vehicles is forecast to rise sharply: by 2025, the number of new vehicle registrations is expected to reach 25 million per year....

Im Focus: The “TRiC” to folding actin

Proteins must be folded correctly to fulfill their molecular functions in cells. Molecular assistants called chaperones help proteins exploit their inbuilt folding potential and reach the correct three-dimensional structure. Researchers at the Max Planck Institute of Biochemistry (MPIB) have demonstrated that actin, the most abundant protein in higher developed cells, does not have the inbuilt potential to fold and instead requires special assistance to fold into its active state. The chaperone TRiC uses a previously undescribed mechanism to perform actin folding. The study was recently published in the journal Cell.

Actin is the most abundant protein in highly developed cells and has diverse functions in processes like cell stabilization, cell division and muscle...

Im Focus: Lining up surprising behaviors of superconductor with one of the world's strongest magnets

Scientists have discovered that the electrical resistance of a copper-oxide compound depends on the magnetic field in a very unusual way -- a finding that could help direct the search for materials that can perfectly conduct electricity at room temperatur

What happens when really powerful magnets--capable of producing magnetic fields nearly two million times stronger than Earth's--are applied to materials that...

All Focus news of the innovation-report >>>

Anzeige

Anzeige

VideoLinks
Industry & Economy
Event News

Within reach of the Universe

08.08.2018 | Event News

A journey through the history of microscopy – new exhibition opens at the MDC

27.07.2018 | Event News

2018 Work Research Conference

25.07.2018 | Event News

 
Latest News

Staying in Shape

16.08.2018 | Life Sciences

Diving robots find Antarctic seas exhale surprising amounts of carbon dioxide in winter

16.08.2018 | Earth Sciences

Protein droplets keep neurons at the ready and immune system in balance

16.08.2018 | Life Sciences

VideoLinks
Science & Research
Overview of more VideoLinks >>>