There is a project for making use of sound-based power generators that are more than 18 percent efficient and converts heat energy to electricity. The goal is to produce the units in 2012.
* Target of 100 W to 150 W electrical thermo acoustic generators (fridge, stove, electricity) for 20 pounds in 1 million quantities with no smoke and half the wood.
* Its weight is 10 to 20 kilograms
* 1.6 kilowatt for cooking and 0.75 kilowatt for simmering
* Fuel: consumption 1 kilogram per hour, dung, wood, and other bio mass
* Fuel is placed in the stove and heated. The fire heats air that has been into shaped pipes situated behind the stove and in the stove's chimney. The heated air starts to vibrate and generate sound waves. In the pipes, the noise is a hundred times louder than an airplane taking off. But since the pipes do not vibrate and are stiff, the sound waves don't have anywhere else to go. So outside the pipe, individuals hear only a hum.
* The waves vibrate a diaphragm situated at the tip of the pipe. The diaphragm is joined to metal wires that sit in the magnet. As the coil vibrates - about 50 vibrations per second - it produces an electrical energy, which is obtained by wires and convert to voltage.
* The stove also has electric sockets, where the user could plug in, for instance, a cellphone for charging. Or she could sell the electricity as a cellphone charging service.
* For fridge, the heated air is sent over a various part of the pipe, where the waves cause the air to increase. As it increases, it cools to a temp that could produce ice. It takes about 2 hours of stove usage to generate enough ice that would keep the freezer cold for 24 hours. But users have the choice of generating more ice to sell for another income.
* All over the world, 2 billion people utilize fire as their cooking method. These fires have been thought to be inefficient, with 93% of the energy produced lost. And when utilized in enclosed areas, smoke from the fires could cause health troubles.
In August of 2009 propane fueled stove generated 19.5 W of power. This could power lights and at the same time charge a cell phone.
The ice that's generated can be placed into the 5 to 6 day coolers. A constant ice supply would let the coolers constantly keep cold foods. The thermo acoustic power generator will be so useful for survival situations or for camping.
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