Possibilities of increasing the overall efficiency of a Solar dish... system

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Possibilities of increasing the overall efficiency of a Solar dish Stirling
system
Anna Pääkkönen, Henrik Tolvanen, Jukka Konttinen, Department of Chemistry and
Bioengineering, Tampere University of Technology
The aim of this work was to investigate the possibilities of increasing a solar/gas-Stirling-engine
system overall efficiency. The available fuel for the current installation is either biogas or methane.
We suggest adding an external gas engine to the existing system. The engine would run on the same
fuel as the Stirling engine and the thermal energy of the exhaust gases would be utilized in the
Stirling engine. The results show that adding the reciprocal gas engine can save fuel costs of the
system. The external engine also increases the system power production reliability in case of
Stirling engine maintenance or breakdown.
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