Share
IIR document
A miniature scale multi-unit generator for low-grade waste heat recovery.
Number: 0004
Author(s) : WISCHNEWSKI M., OHTSUKA M., MIKI H., KOHL M.
Summary
Thermomagnetic materials like Ni-Mn-Ga exhibit a large, abrupt magnetization change near their Curie temperature allowing for waste-heat driven modulation of magnetic forces. Using this effect, we developed a miniature-scale thermomagnetic (TM) generator that converts low-temperature waste heat at temperatures below 180 °C to electricity via resonant self-actuation of an elastic cantilever. Recently, we extended this concept using a piezoelectric (P) layer along the cantilever to increase the output voltage, facilitating power rectification. Here we present the upscaling of the single-unit P-TM generators for the case of five units operating in parallel. Each unit of the P-TM generator system, comprising a rectification circuit, is capable of generating 4 V DC at a source temperature of 160 °C. The accumulated power output of all five units reaches 1.6 µW demonstrating the successful upscaling of P-TM generators operating in resonant self-actuation mode.
Available documents
Format PDF
Pages: 8 p.
Available
Public price
20 €
Member price*
15 €
* Best rate depending on membership category (see the detailed benefits of individual and corporate memberships).
Details
- Original title: A miniature scale multi-unit generator for low-grade waste heat recovery.
- Record ID : 30035046
- Languages: English
- Subject: Technology
- Source: 11th IIR Conference on Solid-State Cooling, Heating and Energy Harvesting.
- Publication date: 2026/06/07
- DOI: http://dx.doi.org/10.18462/iir.thermag.2026.0004
Links
See other articles from the proceedings (29)
See the conference proceedings
-
A spring-assisted linear thermomagnetic convers...
- Author(s) : BASTOS M. P. C., MICHEL H. C. C., ROCHA T. T. M., CÂMARA M. A., BRAGA C. M. P., ROWE A., TREVIZOLI P. V.
- Date : 2026/06/07
- Languages : English
- Source: 11th IIR Conference on Solid-State Cooling, Heating and Energy Harvesting.
- Formats : PDF
View record
-
Magnetocaloric versus thermoelectric effect: ne...
- Author(s) : GRÖSSINGER R., HAAS M., SATO TURTELLI R.
- Date : 2010/08/23
- Languages : English
- Source: 4th International Conference on Magnetic Refrigeration at Room Temperature (Thermag IV). Proceedings: Baotou, China, August 23-27, 2010.
- Formats : PDF
View record
-
Thermoelectric–magnetocaloric energy conversion.
- Author(s) : TOMC U., TUSEK J., KITANOVSKI A., et al.
- Date : 2012/09/17
- Languages : English
- Source: 5th International Conference on Magnetic Refrigeration at Room Temperature (Thermag V). Proceedings: Grenoble, France, September 17-20, 2012.
- Formats : PDF
View record
-
Development and experimental testing of thermom...
- Author(s) : TREVIZOLI P. V., MICHEL H. C. C., SILVA C. E. L., CHAVES P. A. D., TADIM M. S., PIRES A. F. G., BASTOS M. P. C., TORRES D. L. B., ROCHA T. T. M., CÂMARA M. A., BRAGA C. M. P.
- Date : 2026/06/07
- Languages : English
- Source: 11th IIR Conference on Solid-State Cooling, Heating and Energy Harvesting.
- Formats : PDF
View record
-
High-frequency magnetocaloric modules with heat...
- Author(s) : EGOLF P. W., GRAVIER L., FRANCFORT T., et al.
- Date : 2012/09/17
- Languages : English
- Source: 5th International Conference on Magnetic Refrigeration at Room Temperature (Thermag V). Proceedings: Grenoble, France, September 17-20, 2012.
- Formats : PDF
View record