Preliminary investigation on the adoption of CO<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline" id="d1e1947" altimg="si153.svg"><mml:msub><mml:mrow /><mml:mrow><mml:mn>2</mml:mn></mml:mrow></mml:msub></mml:math>-SO<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline" id="d1e1955" altimg="si153.svg"><mml:msub><mml:mrow /><mml:mrow><mml:mn>2</mml:mn></mml:mrow></mml:msub></mml:math> working mixtures in a transcritical Recompression cycle

This paper investigates the interest and potential of using working fluids based on Carbon Sulphur Dioxide mixtures (CO 2 -SO ) in a transcritical Recompression cycle. In order to assess actual thermodynamic concept proposed, influence dopant (SO content is assessed for two different turbine inlet temperatures (550 °C 700 °C). The results obtained are compared with other CO already proposed literature -C 6 F -TiCl 4 )) alternative cycle layouts ( Recuperated Rankine Precompression ). pf analysis reveal that, at high ambient temperature, operating , between 20% 30%(v), very interesting option Concentrated Solar Power plants, able achieve thermal efficiencies ? 45% ¿51% 550 respectively. At minimum temperature 50 °C, configuration leads efficiency gains 6% 2% respect Brayton cycles pure . performance enhancement comparable or higher than that enabled by literature, but significantly specific work (smaller footprint) rise across solar receiver (lower installation costs). • enable 50% temperatures. most layout exploit mixtures. good compromise work.