The new multi-functional biomass stove produces electric cooking sound waves. Fractional furnaces in Nepal and Bangladesh are currently undergoing field trials.
This is a new idea, which may have resonance with the community in the developing world, where biomass stoves also generate electricity using sound waves. Some furnace cookers, refrigerators and energy generators, which use the residual heat, from cooking to the power of a specially designed thermoacoustic engine, help provide energy, local electricity is limited. The project is currently being led by the University of Nottingham, UK, but has attracted the expertise of partners around the world, including the Los Alamos National Laboratory (LANL) in New Mexico.
The researchers at Los Alamos National Laboratory Scott Buckhouse and Greg Swift demonstrated the first ever thermoacoustic engine in 1999, initially in the 19th century by Scottish engineer Robert Stout. Lin outlined the principle of adaptation. Air or gas from Stirling's heat engine (patented in 1816) is alternately heated and cooled from an external source.
The score project director said that Paul Riley, the expansion and contraction of the air driven displacement piston of the Stirling engine, but there is no moving parts in the fractional furnace thermoacoustic setting. The furnace heats one end of a specially shaped tube, and the other end is cooled. Riley explains that the air in the tube is compressed, causing vibration and generating powerful sound waves.
This is over 170 dB - more important than the space shuttle takes off - but it's quiet outside the tube, you can work it backwards as a large microphone or speaker. In fact, we used a megaphone (as a linear generator) to turn the sound of a rig into electrical energy.
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“We must adapt to each area of ​​the lab version, taking into account the type of pots and pans used to cook the local biomass fuel, and the units that will be used to cook the daily tasks will be required,†Riley said.
In the 2011 World Energy Outlook, the International Energy Agency (IEA) reported that about 130 million people currently have no access to electricity, and 95% of this figure lives in sub-Saharan Africa or in developing Asia.
Even a small amount of electricity (the fraction stove is designed to achieve an output of about 150 watts) can change the life of a booming mobile phone market offering rural communities with light and charging facilities. Nearly 3 billion people still rely on biomass stoves, causing about 2 million premature deaths each year, according to the World Health Organization.
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