Enabling Technology Project

E9 Waste-Heat Recovery Technology

Outline of the area

Kenji Taniguchi Specially Appointed Professor, Osaka University
Kenji Taniguchi
Specially Appointed Professor,
Osaka University

Focusing on large amounts of waste heat, our goal in this ALCA Enabling Technology Project is to surpass the conventional technologies by innovating technologies for waste-heat reduction, recovery, and storage. We especially focus on low-temperature waste heat that is produced massively but is difficult to be converted into electricity.
Using waste heat, we develop a highly efficient steam engine operated at less than 100°C and a thermoacoustic engine operated at less than 300°C. In the latter, we not only examine power generation but also the refrigerating machine.


Thermoacoustic System for Waste Heat Regeneration with 60% Carnot Efficiency

Shinya Hasegawa
Associate professor, Tokai universty

In industries and vehicles, more than 60% thermal energy is thrown away as the waste heat. Moreover, these are dissipated in several places and it is very difficult to recover these wastes.Research works are conducted to reuse these waste heat using the thermoacoustic systems.

Thermoacoustic system for waste heat regeneration with 60% Carnot efficiency.