期刊
RSC ADVANCES
卷 4, 期 89, 页码 48128-48134出版社
ROYAL SOC CHEMISTRY
DOI: 10.1039/c4ra07864k
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资金
- National Natural Science Foundation of China [51308447]
- Natural Science Basic Research Plan in Shaanxi Province of China [2013JM6010]
- State Key Laboratory of Clean Energy Utilization in Zhejiang University
- State Key Lab of Subtropical Building Science, South China University of Technology [2015ZB16]
- Shaanxi Provincial Education Department [2013JK0926]
In big cities, intensive solar radiation in summers increases the surface temperature of pavements and building roofs to around 60 degrees C and results in a significant increase in the ambient temperature. It is desirable to capture outdoor thermal energy and convert it into electrical energy. Energy harvesting experiments based on the thermoelectric behavior of carbon fiber reinforced cement composites (CFRC) have been performed for the first time under simulated solar irradiation. The thermoelectric figure of merit (1.334 x 10(-7)) was determined at room temperature for CFRC with a carbon fiber content of 1.0 weight percent. A slab sample was used to estimate the energy harvesting quality of CFRC at a temperature difference of about 60 degrees C. 4-5 mu w of power was obtained from a one square meter CFRC slab with a thickness of 20 mm. The harvested energy of this one square meter CFRC slab reached a maximum of 8.4 x 101(-6) J over 420 minutes of irradiation, while its surface temperature increased quickly.
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