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Optimum Thermal Concentration of Solar Thermoelectric Generators (STEG) in Realistic Meteorological Condition
Linköping University, Department of Science and Technology, Physics and Electronics. Linköping University, Faculty of Science & Engineering. Univ Tehran, Iran.
Univ Tehran, Iran.
Univ Tehran, Iran.
Mat and Energy Res Ctr, Iran.
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2018 (English)In: Energies, ISSN 1996-1073, E-ISSN 1996-1073, Vol. 11, no 9, article id 2425Article in journal (Refereed) Published
Abstract [en]

Global warming and air pollution concerns make renewable energies inevitable. Thermoelectric (TE) generatorssolid-state devices which can convert thermal energy into electricityare one of the candidates to capture the energy of the suns rays. Impact of high thermal on flat panel Solar Thermoelectric Generator (STEG) performance is known. In this research, a method to optimize thermal concentration in realistic terrestrial condition is introduced. To this end, a Simulink model of the STEG was developed, and module performance curves are determined. According to the results, Thermal concentration in realistic condition is more than double, compared to standard condition. The efficiency of the STEG was 4.5%, 6.8%, and 7.7% when the module figure of merit (ZT) was set to 0.8, 1.2, and 1.5, respectively, in locations with a higher ratio of diffused radiation (e.g., Aalborg and Denmark). These values corresponded to 70%, 106%, and 121% of the electrical power produced by parabolic troughs under the same meteorological condition. Furthermore, the possibility of controlling the ratio of heat and electricity in the cogeneration system is possible by controlling the heating flow or electric current. Heating flow can be controlled by the electrical current in STEG over 17 percent of its value in optimum condition.

Place, publisher, year, edition, pages
MDPI , 2018. Vol. 11, no 9, article id 2425
Keywords [en]
solar thermoelectric generator; optimization; cogeneration; thermal concentration
National Category
Energy Systems
Identifiers
URN: urn:nbn:se:liu:diva-152405DOI: 10.3390/en11092425ISI: 000446604500246OAI: oai:DiVA.org:liu-152405DiVA, id: diva2:1259600
Note

Funding Agencies|research center of the University of Tehran, Iran; FP7 Program [604647]; Laboratory of Organic Electronics (LOE); LiU Biblioteket

Available from: 2018-10-30 Created: 2018-10-30 Last updated: 2019-03-07

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Karami Rad, Meysam
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