Performance enhancement of a thermoelectric harvester with a PCM/Metal foam composite
نویسندگان
چکیده
The present numerical investigation examines the performance improvement of thermoelectric generators (TEGs) by using phase change materials (PCM) and porous medium. Due to high latent heat PCMs, both sides TEG were filled with paraffin RT35 (on cold-side) RT69 hot-side). PCM in cold-side was used as a heat-sink whereas hot-side reduce output voltage fluctuations. Since system periodically subjected flux from an external source, also generate continuous thermal when source cut-off. To increase conductivity material, this studied effect copper medium different porosities (0.80, 0.90, 0.95) three pores per inches (PPI) 10, 20, 40. results show that use on produces more electrical energy compared (i) having (ii) without generator. Furthermore, indicated enhanced increasing PPI reducing porosity. As result, 10 40 (at 0.80 porosity) porosity 0.95 20), electricity generated increases 13.57 5.36%, respectively.
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ژورنال
عنوان ژورنال: Renewable Energy
سال: 2021
ISSN: ['0960-1481', '1879-0682']
DOI: https://doi.org/10.1016/j.renene.2021.01.020