Materials 2010, 3(4), 2801-2814; doi:10.3390/ma3042801
Article

Thermoelectric Oxide Modules (TOMs) for the Direct Conversion of Simulated Solar Radiation into Electrical Energy

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Received: 8 January 2010; in revised form: 24 March 2010 / Accepted: 12 April 2010 / Published: 15 April 2010
(This article belongs to the Special Issue Novel Thermoelectric Materials and Applications)
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
Abstract: The direct conversion of concentrated high temperature solar heat into electrical energy was demonstrated with a series of four–leg thermoelectric oxide modules (TOM). These temperature stable modules were not yet optimized for high efficiency conversion, but served as proof-of-principle for high temperature conversion. They were constructed by connecting two p- (La1.98Sr0.02CuO4) and two n-type (CaMn0.98Nb0.02O3) thermoelements electrically in series and thermally in parallel. The temperature gradient ΔT was applied by a High–Flux Solar Simulator source (HFSS) which generates a spectrum similar to solar radiation. The influence of the graphite layer coated on the hot side of the Al2O3 substrate compared to the uncoated surface on ΔT, Pmax and η was studied in detail. The measurements show an almost linear temperature profile along the thermoelectric legs. The maximum output power of 88.8 mW was reached for a TOM with leg length of 5 mm at ΔT = 622 K. The highest conversion efficiency η was found for a heat flux of 4–8 W cm-2 and the dependence of η on the leg length was investigated.
Keywords: thermoelectricity; thermoelectric converter; solar; heat transfer; radiation; modelling
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MDPI and ACS Style

Tomeš, P.; Trottmann, M.; Suter, C.; Aguirre, M.H.; Steinfeld, A.; Haueter, P.; Weidenkaff, A. Thermoelectric Oxide Modules (TOMs) for the Direct Conversion of Simulated Solar Radiation into Electrical Energy. Materials 2010, 3, 2801-2814.

AMA Style

Tomeš P, Trottmann M, Suter C, Aguirre MH, Steinfeld A, Haueter P, Weidenkaff A. Thermoelectric Oxide Modules (TOMs) for the Direct Conversion of Simulated Solar Radiation into Electrical Energy. Materials. 2010; 3(4):2801-2814.

Chicago/Turabian Style

Tomeš, Petr; Trottmann, Matthias; Suter, Clemens; Aguirre, Myriam Heidi; Steinfeld, Aldo; Haueter, Philipp; Weidenkaff, Anke. 2010. "Thermoelectric Oxide Modules (TOMs) for the Direct Conversion of Simulated Solar Radiation into Electrical Energy." Materials 3, no. 4: 2801-2814.

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