Practical thermophotovoltaic generators
Bitnar B.1, Durisch W.1, Palfinger G.1, von Roth F.1, Vogt U.1, Bronstrup A.1, Seiler D.1
1Paul Scherrer Institut, C Villigen PSI, Switzerland
Поступила в редакцию: 9 февраля 2004 г.
Выставление онлайн: 20 июля 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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