Bubble Power Seminar report
The standard of living in a society is measured by the amount of
energy consumed. In the present scenario where the conventional fuels are getting
depleted at a very fast rate the current energy reserves are not expected to last for
more than 100 years. Improving the harnessing efficiency of non-conventional
energy sources like solar, wind etc. as a substitute for the conventional sources is
One of the conventional methods of producing bulk energy is nuclear power. There are two types of nuclear reactions, namely fission & fusion. They are accompanied by the generation of enormous quantity of energy. The energy comes from a minute fraction of the original mass converting according to Einstein’s famous law: E=mc 2 , where E represents energy, m is the mass and c is the speed of light. In fission reaction, certain heavy atoms, such as uranium is split by neutrons releasing huge amount of energy. It also results in waste products of radioactive elements that take thousands of years to decay. The fusion reactions, in which simple atomic nuclei are fused together to form complex nuclei, are also referred to as thermonuclear reactions. The more important of these fusion reactions are those in which hydrogen isotopes fuse to form helium. The Sun’s energy is ultimately due to gigantic thermonuclear reaction.The waste products from the fusion plants would be short lived, decaying to non-dangerous levels in a decade or two. It produces more energy than fission but the main problem of fusion reaction is to create an atmosphere of very high temperature and pressure like that in the Sun.
A new step that has developed in this field is ‘Bubble Power’-the revolutionary new energy source. It is working under the principle of Sonofusion. For several years Sonofusion research team from various organizations have joined forces to create Acoustic Fusion Technology Energy Consortium (AFTEC) to promote the development of sonofusion. It was derived from a related phenomenon known as sonoluminescence. Sonofusion involves tiny bubbles imploded by sound waves that can make hydrogen nuclei fuse and may one day become a revolutionary new energy source.
When a gas bubble in a liquid is excited by ultrasonic acoustic waves it can emit short flashes of light suggestive of extreme temperatures inside the bubble. These flashes of light known as sonoluminescence, occur as the bubble implode or cavitates. It is show that chemical reactions occur during cavitations of a single, isolated bubble and yield of photons, radicals and ions formed. That is gas bubbles in a liquid can convert sound energy in to light.
Sonoluminescence also called single-bubble sonoluminescence involves a single gas bubble that is trapped inside the flask by a pressure field. For this loud speakers are used to create pressure waves and for bubbles naturally occurring gas bubbles are used. These bubbles can not withstand the excitation pressures higher than about 170 kilopascals. Pressures higher than about 170 kilopascals would always dislodge the bubble from its stable position and disperse it in the liquid. A pressure at least ten times that pressure level to implode the bubbles is necessary to trigger thermonuclear fusion. The idea of sonofusion overcomes these limitations.
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