Annual energy harvesting performance of a phase change material-integrated thermoelectric power generation block in building walls
- Authors
- Byon, Yoo-Suk; Jeong, Jae-Weon
- Issue Date
- Dec-2020
- Publisher
- ELSEVIER SCIENCE SA
- Keywords
- Thermoelectric generator; Phase change material; Passive generation system; Energy harvesting; Renewable energy
- Citation
- ENERGY AND BUILDINGS, v.228, pp.1 - 12
- Indexed
- SCIE
SCOPUS
- Journal Title
- ENERGY AND BUILDINGS
- Volume
- 228
- Start Page
- 1
- End Page
- 12
- URI
- https://scholarworks.bwise.kr/hanyang/handle/2021.sw.hanyang/144211
- DOI
- 10.1016/j.enbuild.2020.110470
- ISSN
- 0378-7788
- Abstract
- Herein, we discuss the design and evaluation of a passive electricity generator, which we call an energy-harvesting block. The energy-harvesting block is a thermoelectric generator-based passive energy-harvesting system integrated with a phase change material that is designed to harvest energy from waste heat on the exterior walls of buildings. The thermoelectric generator in the energy-harvesting block converts heat into electricity based on the Seebeck effect. A phase change material was used to cool the cold side of the thermoelectric generator by acting as a heat sink to convert sensible heat into latent heat. Experiments were conducted under the conditions of monthly representative wall-temperature profiles. Voltage and temperature data were collected to measure the phase change and electricity generation. Based on these experiments, this study predicted the electricity annually generated by the energy-harvesting block. The results showed that 2.1 kWh/m(2) of electricity was generated in a year. Average generation power was 0.03 W, and average voltage was 0.3 V. It was shown that 3-4 energy-harvesting blocks could supply enough electricity for modern digital circuits such as the ones used in sensors and controllers.
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