Journal
JOURNAL OF POLYMER RESEARCH
Volume 28, Issue 8, Pages -Publisher
SPRINGER
DOI: 10.1007/s10965-021-02642-7
Keywords
Thermo-electric energy harvesting; Phase transitions; Graphene
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Funding
- GRRC program of Gyeonggi Province [2016-B03]
- National Research Foundation of Korea (NRF) - Ministry of Education [2018R1A5A1024127]
- National Research Foundation of Korea [2018R1A5A1024127] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
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In this study, PCM composites with different filler ratios were used to achieve high energy harvesting efficiency in thermo-electric systems. The results showed significant output current during melting and cooling processes. Numerical analysis using finite element method was performed and compared with experimental results to validate the findings.
Phase change materials (PCMs) are utilized for thermo-electric energy harvesting systems by using phase transitions. The thermal energy harvesting can be controlled for different isothermal fields. Introducing graphene nano-platelets (GNPs) fillers in the system can enlarge the Seebeck effect, thus increasing the thermo-electric energy harvesting performance. In this work, we investigated the PCM composites with different filler ratios to maximize the output current. The energy harvesting efficiencies of the PCM system during melting and cooling processes were found to be 62.26% and 39.96%, respectively. In addition, we performed numerical analysis using finite element method and compared with the experimental results.
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