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Harvesting electrical energy from torsional thermal actuation driven by natural convection

Journal Article


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Abstract


  • The development of practical, cost-efective systems for the conversion of low-grade waste heat to

    electrical energy is an important area of renewable energy research. We here demonstrate a thermal

    energy harvester that is driven by the small temperature fuctuations provided by natural convection.

    This harvester uses coiled yarn artifcial muscles, comprising well-aligned shape memory polyurethane

    (SMPU) microfbers, to convert thermal energy to torsional mechanical energy, which is then

    electromagnetically converted to electrical energy. Temperature fuctuations in a yarn muscle, having

    a maximum hot-to-cold temperature diference of about 13°C, were used to spin a magnetic rotor to

    a peak torsional rotation speed of 3,000rpm. The electromagnetic energy generator converted the

    torsional energy to electrical energy, thereby producing an oscillating output voltage of up to 0.81V and

    peak power of 4W/kg, based on SMPU mass.

Authors


  •   Kim, Shi Hyeong (external author)
  •   Sim, Hyeon Jun. (external author)
  •   Hyeon, Jae (external author)
  •   Suh, Dongseok (external author)
  •   Spinks, Geoff M.
  •   Baughman, Ray H. (external author)
  •   Kim, Seon Jeong. (external author)

Publication Date


  • 2018

Citation


  • Kim, S. Hyeong., Sim, H. Jun., Hyeon, J. Sang., Suh, D., Spinks, G. M., Baughman, R. H. & Kim, S. Jeong. (2018). Harvesting electrical energy from torsional thermal actuation driven by natural convection. Scientific Reports, 8 (1), 8712-1-8712-7.

Scopus Eid


  • 2-s2.0-85048241121

Ro Full-text Url


  • http://ro.uow.edu.au/cgi/viewcontent.cgi?article=4202&context=aiimpapers

Ro Metadata Url


  • http://ro.uow.edu.au/aiimpapers/3152

Start Page


  • 8712-1

End Page


  • 8712-7

Volume


  • 8

Issue


  • 1

Place Of Publication


  • United Kingdom

Abstract


  • The development of practical, cost-efective systems for the conversion of low-grade waste heat to

    electrical energy is an important area of renewable energy research. We here demonstrate a thermal

    energy harvester that is driven by the small temperature fuctuations provided by natural convection.

    This harvester uses coiled yarn artifcial muscles, comprising well-aligned shape memory polyurethane

    (SMPU) microfbers, to convert thermal energy to torsional mechanical energy, which is then

    electromagnetically converted to electrical energy. Temperature fuctuations in a yarn muscle, having

    a maximum hot-to-cold temperature diference of about 13°C, were used to spin a magnetic rotor to

    a peak torsional rotation speed of 3,000rpm. The electromagnetic energy generator converted the

    torsional energy to electrical energy, thereby producing an oscillating output voltage of up to 0.81V and

    peak power of 4W/kg, based on SMPU mass.

Authors


  •   Kim, Shi Hyeong (external author)
  •   Sim, Hyeon Jun. (external author)
  •   Hyeon, Jae (external author)
  •   Suh, Dongseok (external author)
  •   Spinks, Geoff M.
  •   Baughman, Ray H. (external author)
  •   Kim, Seon Jeong. (external author)

Publication Date


  • 2018

Citation


  • Kim, S. Hyeong., Sim, H. Jun., Hyeon, J. Sang., Suh, D., Spinks, G. M., Baughman, R. H. & Kim, S. Jeong. (2018). Harvesting electrical energy from torsional thermal actuation driven by natural convection. Scientific Reports, 8 (1), 8712-1-8712-7.

Scopus Eid


  • 2-s2.0-85048241121

Ro Full-text Url


  • http://ro.uow.edu.au/cgi/viewcontent.cgi?article=4202&context=aiimpapers

Ro Metadata Url


  • http://ro.uow.edu.au/aiimpapers/3152

Start Page


  • 8712-1

End Page


  • 8712-7

Volume


  • 8

Issue


  • 1

Place Of Publication


  • United Kingdom