Forum for Science, Industry and Business

Sponsored by:     3M 
Search our Site:

 

Self-Heating Cup, Or Heat In Any Weather

16.06.2006
The invention, for which specialists of the Moscow company “Bargan production group” took out a patent practically all over the world, is called in a somewhat stiff manner: “the packing for changing temperature of the kept product prior to its opening”.

As a matter of fact, this is a glass arranged in a particular way, thus by pressing on its side it is possible to heat the glass contents up to nearly boiling temperature within minutes. To be more precise, nearly up to 90 degrees C. The idea has been in the air for long, but it is only now that Vassily Bargan and his employees managed to implement it.

The water or whatever else is in the glass will be heated in the glass by a chemical reaction (well known to any schoolchild) between zinc and copper sulfate. Active zinc displaces copper from its sulfate. This is accompanied by generation of free copper – and heat, which the inventors suggest to utilize. The task is, firstly, to make the reaction controlled, i.e., to force necessary quantity of heat to be educed within reasonable time, and secondly, to preserve the heat and to direct it to fulfil required job – to heat water, but not the environment. The inventors have successfully coped with the two tasks.

It should be noted, it seems from the outside that theorist chemists should have coped best to with the first task. In fact, the reaction is well known, the heat evolved in its course – is a reference value, so it seems there should be no pitfalls. But they appeared to be multiple. The authors had, after numerous failures of highly erudite professorate, to act in the old manner – to seek optimal parameters empirically, sorting out dozens if not hundreds of variants.

It has turned out that several factors impact the process. The reagents’ ratio and quantity, size of their particles and even the number of molecules of water in copper sulfate crystalline hydrate – all of them have turned out to influence the process rate and intensity. Either the reaction would go too quick, or it would “gather momentum” in no way and hardly glimmer for almost an hour, or emitted heat is hardly enough to warm a tiny coffee cup.

By the way, other developers faced the same problems – but failed to overcome them. In some cases, water was heated up too slowly, or weakly, or well but in a small volume.

The authors of Russian packing managed to achieve a practically record result. After water gets onto the heat-generating composition developed by them (mixture of copper sulfate with zinc powder), a glass of water gets warm both quickly and efficiently. If little time is available, water can be heated up to 70 degrees C within about five minutes, but if you have patience for 9 minutes – water can be warmed up to 90 degrees C.

Such efficiency results from the fact that the inventors have managed to solve the second problem, i.e., they learned to preserve heat of the reaction. To this end, they suggested that the glass should be multi-layer, with heat-insulating case made like a matreshka (set of nesting dolls) of four nesting glasses. Inside is the glass to drink from, filled with water or other contents. On the outside, the external glass made of heat-insulating polysterene, well known by package for hot fast food dishes.

Between them is what the authors called a “thermal module”. Small glasses filled with a mixture of reagents, a small tank with water and a piercing element – a sharp needle made of surgical stainless steel. It is sufficient to press on the side and the needle would pierce through a “bag” of water, the water would leak on the reagents mixed in a proper ratio, and the reaction would go – with heat release, as was predicted.

Now, a bit of self-control is to be demonstrated – and hot water is at your disposal. In fact, such a glass works only once, the packing is a single-shot. Besides, it is rather heavy – its weight is about 100 grams, and if it is filled with water (drinking water, naturally), - almost 300 grams. One would not take it on hiking, but it would be good to put a pack of such glasses into a car. However, a standard beverage can (0.33 litre) weights even more - 352 grams.

The idea seems even more appealing to utilize such a packing in divisions of the Ministry of the Russian Federation for Civil Defense, Emergency Management and Natural Disasters Response –the opportunity to heat water quickly without fire or electricity is sometimes invaluable in emergency situations. Now, such opportunity is available thanks to the Moscow specialists’ effort.

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

More articles from Life Sciences:

nachricht Newly designed molecule binds nitrogen
23.02.2018 | Julius-Maximilians-Universität Würzburg

nachricht Atomic Design by Water
23.02.2018 | Max-Planck-Institut für Eisenforschung GmbH

All articles from Life Sciences >>>

The most recent press releases about innovation >>>

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

Im Focus: Attoseconds break into atomic interior

A newly developed laser technology has enabled physicists in the Laboratory for Attosecond Physics (jointly run by LMU Munich and the Max Planck Institute of Quantum Optics) to generate attosecond bursts of high-energy photons of unprecedented intensity. This has made it possible to observe the interaction of multiple photons in a single such pulse with electrons in the inner orbital shell of an atom.

In order to observe the ultrafast electron motion in the inner shells of atoms with short light pulses, the pulses must not only be ultrashort, but very...

Im Focus: Good vibrations feel the force

A group of researchers led by Andrea Cavalleri at the Max Planck Institute for Structure and Dynamics of Matter (MPSD) in Hamburg has demonstrated a new method enabling precise measurements of the interatomic forces that hold crystalline solids together. The paper Probing the Interatomic Potential of Solids by Strong-Field Nonlinear Phononics, published online in Nature, explains how a terahertz-frequency laser pulse can drive very large deformations of the crystal.

By measuring the highly unusual atomic trajectories under extreme electromagnetic transients, the MPSD group could reconstruct how rigid the atomic bonds are...

Im Focus: Developing reliable quantum computers

International research team makes important step on the path to solving certification problems

Quantum computers may one day solve algorithmic problems which even the biggest supercomputers today can’t manage. But how do you test a quantum computer to...

Im Focus: In best circles: First integrated circuit from self-assembled polymer

For the first time, a team of researchers at the Max-Planck Institute (MPI) for Polymer Research in Mainz, Germany, has succeeded in making an integrated circuit (IC) from just a monolayer of a semiconducting polymer via a bottom-up, self-assembly approach.

In the self-assembly process, the semiconducting polymer arranges itself into an ordered monolayer in a transistor. The transistors are binary switches used...

Im Focus: Demonstration of a single molecule piezoelectric effect

Breakthrough provides a new concept of the design of molecular motors, sensors and electricity generators at nanoscale

Researchers from the Institute of Organic Chemistry and Biochemistry of the CAS (IOCB Prague), Institute of Physics of the CAS (IP CAS) and Palacký University...

All Focus news of the innovation-report >>>

Anzeige

Anzeige

VideoLinks
Industry & Economy
Event News

2nd International Conference on High Temperature Shape Memory Alloys (HTSMAs)

15.02.2018 | Event News

Aachen DC Grid Summit 2018

13.02.2018 | Event News

How Global Climate Policy Can Learn from the Energy Transition

12.02.2018 | Event News

 
Latest News

Basque researchers turn light upside down

23.02.2018 | Physics and Astronomy

Finnish research group discovers a new immune system regulator

23.02.2018 | Health and Medicine

Attoseconds break into atomic interior

23.02.2018 | Physics and Astronomy

VideoLinks
Science & Research
Overview of more VideoLinks >>>