ФТП, 2004, том 38, выпуск 8

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Practical thermophotovoltaic generators

B.Bitnar , W.Durisch, G.Palfinger, F.von Roth, U.Vogt *, A.Bronstrup *, D.Seiler $

Paul Scherrer Institut,
CH-5232 Villigen PSI, Switzerland
* EMPA, CH-8600 Dubendorf, Switzerland
$ NTB Interstate University for Applied Sciences of Technology,
CH-9471 Buchs, Switzerland

(Получена 9 февраля 2004 г. Принята к печати 11 февраля 2004 г.)

For use in gas fired thermophotovoltaic systems, a selective emitter made from Yb2O3 foam ceramic has been developed. This foam ceramic is mechanically stable and FTIR spectroscopy showed that 10% of the radiation power emitted by the foam can be converted by Si photocells. The thermal and thermal-shock stability of Yb2O3 foam ceramic was analysed. The foam passed 200 heating / cooling cycles without major damage. Tubes were manufactured from this material and tested in a thermophotovoltaic demonstration system. An electrical power of 86 W was achieved at a thermal power of 16 kW. Using a simulation model, a potential efficiency of a thermophotovoltaic system based on our technology applied for the conversion of concentrated solar radiation was estimated.

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