A team of researchers at the American University in Cairo (AUC) on Tuesday (March 19th) announced they have developed an eco-friendly engine that uses heat to induce sound and electricity, Egypt's Ahram Online reported.
The thermo-acoustic engine was developed by a team of AUC faculty members and graduate students from different universities.
The project cost some $3 million since the AUC team began working on it in 2006, according to team leader Ihab Abdel-Rahman, associate dean of graduate studies and research at the School of Sciences and Engineering.
The engine, which can convert heat (solar-generated and otherwise) into sound, and subsequently into electric power, produces no harmful emissions and is one of the least costly methods of producing clean, renewable energy, he said.
It "uses simple materials that have no special requirements, are commercially available in large quantities, and are relatively cheap", Abdel-Rahman said.
"This would represent a national solution to Egypt's energy problem," the scientist said.