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Document IIF

Heat to power energy conversion using thermomechanical polymers: an experimental proof of concept.

Numéro : 0020

Auteurs : SEBALD G., OIRI T., LOMBARDI G., COATIVY G., KOMIYA A.

Résumé

Low-grade heat although abundant is hardly convertible into usable energy not only because of the limited Carnot efficiency, but also due to the lack of proper solutions, especially at low scales. In this work, we investigated the thermomechanical properties of natural rubber and proposed a design of a heat to power energy converter. The thermomechanical characterization of natural rubber tubes showed temperature induced stress variation up to 9~12 kPa/K for elongations between 3 and 6 times the initial length. A device was then developed using a dual assembly of parallel natural rubber tubes. Temperature variations of 5 ~ 35 K were then induced by cyclic flow between hot and cold reservoirs. Applying thermodynamic cycles, the prototype was able to produce up to 3.2 J of mechanical energy per cycle (150 mJ/cm3 per cycle). Considering the cycle period of 34 s, this corresponded to an output mechanical power of 120 mW.
 

Documents disponibles

Format PDF

Pages : 7 p.

Disponible

  • Prix public

    20 €

  • Prix membre*

    15 €

* meilleur tarif applicable selon le type d'adhésion (voir le détail des avantages des adhésions individuelles et collectives)

Détails

  • Titre original : Heat to power energy conversion using thermomechanical polymers: an experimental proof of concept.
  • Identifiant de la fiche : 30035069
  • Langues : Anglais
  • Sujet : Technologie
  • Source : 11th IIR Conference on Solid-State Cooling, Heating and Energy Harvesting.
  • Date d'édition : 07/06/2026
  • DOI : http://dx.doi.org/10.18462/iir.thermag.2026.0020

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