4 0

Harvesting electrical energy from torsional thermal actuation driven by natural convection

Title
Harvesting electrical energy from torsional thermal actuation driven by natural convection
Author
김선정
Keywords
NANOTUBE YARN MUSCLES; ARTIFICIAL MUSCLES; NANOFIBERS
Issue Date
2018-06
Publisher
NATURE PUBLISHING GROUP
Citation
SCIENTIFIC REPORTS, v. 8, Article no. 8712
Abstract
The development of practical, cost-effective 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 fluctuations provided by natural convection. This harvester uses coiled yarn artificial muscles, comprising well-aligned shape memory polyurethane (SMPU) microfibers, to convert thermal energy to torsional mechanical energy, which is then electromagnetically converted to electrical energy. Temperature fluctuations in a yarn muscle, having a maximum hot-to-cold temperature difference of about 13 degrees C, were used to spin a magnetic rotor to a peak torsional rotation speed of 3,000 rpm. The electromagnetic energy generator converted the torsional energy to electrical energy, thereby producing an oscillating output voltage of up to 0.81 V and peak power of 4 W/kg, based on SMPU mass.
URI
https://www.nature.com/articles/s41598-018-26983-4http://repository.hanyang.ac.kr/handle/20.500.11754/119095
ISSN
2045-2322
DOI
10.1038/s41598-018-26983-4
Appears in Collections:
COLLEGE OF ENGINEERING[S](공과대학) > ELECTRICAL AND BIOMEDICAL ENGINEERING(전기·생체공학부) > Articles
Files in This Item:
Harvesting electrical energy from torsional thermal actuation driven by natural convection.pdfDownload
Export
RIS (EndNote)
XLS (Excel)
XML


qrcode

Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.

BROWSE