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Directory:Acoustic Generator:SCORE:Stove for Cooking, Refrigeration and Electricity

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&lt&lt A Congress:Top 100 Technologies -- RD Energy Technology &gt&gt

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Image:SCORE sketch 250.jpg

Acoustic Stove, Fridge, Generator Could Aid Third World

The "Stove for Cooking, Refrigeration and Electricity," or SCORE, could help improve the health and quality of life for the two billion or so people in the world who cook over open fires. The SCORE thermoacoustics technology promoted by a multi-institutional project converts heated gas into sound waves which can be used to cook, cool, and/or generate electricity.

Official Website

Score Applications

Score in-the-news



Associated Links

Score Thermo-Acoustic Technology (LANL)

Sound makes electricity in Space - Researchers from Los Alamos National Laboratory and Northrop Grumman Space Technology have built a compact generator that converts heat to electricity with the relatively high efficiency of 18 percent. (Technology Research News October 6/13, 2004)


Nottingham University Electrical

The University of Manchester, School of MACE

Imperial Mech. Eng.

Practical Action, energy

Latest Developments

May 10 2007

Press Release:

'Super-fridge' to help improve lives in developing countries - An all-in-one cooker, energy generator and fridge could soon be improving quality of life in developing countries, thanks to an international project launched this week. (Imiperial College)

Powered by sound — revolutionary stove could help reduce poverty (Score)

The Problem

Traditional cooking over a fire is notoriously inefficient. A person can spend two hours a day collecting wood to burn in a fire that is so wasteful that 93 percent of the energy generated goes up in smoke.

How it Works

Image:SCORE system diagram 550.jpg

Source: Discovery coverage:

Wood is placed inside the stove and burned. The fire heats compressed air that has been pumped into specially shaped pipes located inside the stove's chimney and behind the stove.

The heated air begins to vibrate and produce sound waves. Inside the pipes, the noise is 100 times louder than a jet taking off. But because the pipes are stiff and do no vibrate, the sound waves have nowhere to go. So outside the pipe, people hear only a faint hum.

The sound waves vibrate a diaphragm located at the end of the pipe. The diaphragm is attached to a coil of metal wires that sit inside a magnet. As the wire coil vibrates — about 50 times per second — it generates an electrical current, which is captured by wires and converted to the proper voltage.

The stove has electrical sockets, where the homeowner can plug in, for example, a mobile phone for charging. Or she can sell the electricity as a phone-charging service.

For refrigeration, the heated, compressed air is sent through a different part of the pipe, where sound waves cause the air to expand. As it expands, it cools to a temperature that can produce ice. It takes about two hours of stove use to produce enough ice that will keep the fridge cold for 24 hours. But homeowners have the option of producing more ice to sell for income.


list here


University of Nottingham, United Kingdom
Paul Riley: Project Director

Paul Riley is the project director at the University of Nottingham in the United Kingdom

Riley and his team want to involve local universities to train a labor force that can build and manufacture most of the parts needed to make the stove. In five year's time, they hope to be churning out about 1 million stoves a year that each sell for $30 to $40.


Google > SCORE:Stove for Cooking, Refrigeration and Electricity

In the News

Score in-the-news

Google News > Acoustic Stove SCORE

Stove cooks, chills and powers your mobile - A stove that uses acoustic technology to cook and cool, and generates its own electricity, is being designed for developing communities in Africa and Asia. ... (ABC Science, Australia May 29)

Acoustic Stove Could Aid Third World - An appliance being designed for developing communities in Africa and Asia not only generates electricity, but also cooks and cools using acoustic technology. (Discovery News May 25, 2007)

The SCORE: All in One Low Tech Cooker, Energy Generator And Fridge - More efficient than Fire 1.0, the SCORE uses thermoacoustics to generate energy: Heat travels through a "stack" of parallel channels and acoustic standing ... (Wired News May 21, 2007)

SCORE: The Multi-tasking Stove, Sounds Good - Take a Stirling engine, some four UK universities, (Nottingham, Imperial College London, Manchester, Queen Mary London), a leading US research centre (Los Alamos National Laboratory), a multi-national electrical goods manufacturer (GP Acoustics), an international charitable organisation (Practical Action), sprinkle in £2 M (~4$4 M USD) and let simmer for 5 years and you just might conjure up a SCORE (Stove for Cooking, Refrigeration and Electricity). (TreeHugger May 18, 2007)

An oven-fridge-generator powered by sound - Several UK universities are teaming to develop an inexpensive all-in-one appliance for developing countries. (ZDNet May 16th, 2007)

SCORE-Stove for Cooking,Refrigeration and Electricity (Timbuktu Chronicles May 15, 2007)

Related Technologies

Ben & Jerry's Uses Sound to Chill Ice Cream (listen to sound) - Scientists have found a new way to refrigerate ice cream, by using sound waves instead of chemicals. (NPR April 28, 2004)


Name given in press release:

Abigail Smith

Imperial College London Press Office

Tel: 020 7594 6701

Email: []


See Talk:Directory:Acoustic Generator:SCORE:Stove for Cooking, Refrigeration and Electricity

See also

Directory:Thermal Electric

- Directory







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