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New paper by University of Seville presents the exergy analysis of different transcritical Carbon Dioxide cycles for CSP applications

7 March, 2023/in Conference and journal papers /by jose

The third episode of the webinar series on R& Activities on sCO2 in Europe organized by ETN will take place on March 6th

18 February, 2023/in News /by jose

As already published on this website, the CO2OLHEAT Project coordinated by ETN Global aims to demonstrate (at TRL7) the operation of a 2 MW Waste-Heat-to-power (WH2P) skid based on a 2MW-sCO2 cycle, able to efficiently valorize local waste heat at a significant temperature of 400°C in the CEMEX cement manufacturing plant in Prachovice (CZ). […]

New paper by University of Seville presents the exergy analysis of different transcritical Carbon Dioxide cycles for CSP applications

7 March, 2023/in Conference and journal papers /by jose

The third episode of the webinar series on R& Activities on sCO2 in Europe organized by ETN will take place on March 6th

18 February, 2023/in News /by jose

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New paper by University of Seville presents the exergy analysis of different transcritical Carbon Dioxide cycles for CSP applications

7 March, 2023/in Conference and journal papers /by jose

The SCARABEUS team at University of Seville has recently published an assessment of transcritical cycles running on different Carbon Dioxide mixtures in Concentrated Solar Power applications. This assessment makes use of the 2^nd Law of Thermodynamics, rather than the 1^st Law that is commonly used, with the aim to identify the room for further performance enhancement. Three different dopants are considered: Hexafluorobenzene (for cycles operating at temperatures lower than 600ºC), Titanium Tetrachloride and Sulphur Dioxide.

The paper has been published in Renewable Energy (Elsevier) and it is available in Open Access on the publisher’s website (link). Check the abstract below:

This paper focuses on the thermodynamic comparison between pure supercritical Carbon Dioxide and blended transcritical Carbon Dioxide power cycles by means of a thorough exergy analysis, considering exergy efficiency, exergy destruction and efficiency losses from Carnot cycle as main figures of merit. A reference power plant based on a steam Rankine cycle and representative of the state-of-the-art (SoA) of Concentrated Solar Power (CSP) plants is selected as base-case. Two different temperatures of the energy (heat) source are considered: 575 °C (SoA) and 725 °C (next generation CSP).

Compared to SoA Rankine cycles, CO₂ blends enable cycle exergy efficiency gains up to 2.7 percentage points at 575 °C. At 725 °C, they outperform both SoA and pure CO₂ cycles with exergy efficiencies up to 75.3%. This performance is brought by a significant reduction in the exergy destruction across the compression and heat rejection process rounding 50%. Additionally, it has been found that the internal condensation occurring inside the heat recuperator for those mixtures with a large temperature glide improves recuperator exergy efficiency, supporting the use of simpler layouts without split-compression. Finally, CO₂ blends exhibit lower cycle exergy efficiency degradation than pure sCO₂ in the event of an increase in the design ambient temperature.

The third episode of the webinar series on R& Activities on sCO2 in Europe organized by ETN will take place on March 6th

18 February, 2023/in News /by jose

As already published on this website, the CO2OLHEAT Project coordinated by ETN Global aims to demonstrate (at TRL7) the operation of a 2 MW Waste-Heat-to-power (WH2P) skid based on a 2MW-sCO₂ cycle, able to efficiently valorize local waste heat at a significant temperature of 400°C in the CEMEX cement manufacturing plant in Prachovice (CZ).

ETN Global initiated, in September 2022, a series of webinars aimed at providing a forum where the R&D activities in the area of supercritical Carbon Dioxide technologies can be disseminated and made known to a wider audience. This initative has been joined by seven international and national projects, funded by the Horizon 2020 programme of the European Commission (CO2OLHEAT, COMPASsCO2, SCARABEUS, DESOLINATION, SOLARSCO2OL, sCO2-4-NPP) and by national R&D programmes in Germany (CARBOSOLA) and the Czech Republic (sCO₂-Efekt).

The first webinar, held on September 22^nd, aimed to introduce these projects in a single session, providing the main features of the project from technical and administrative standpoints. Opportunities for collaboration between projects and with stakeholders were also highlighted. Presentations can be downloaded from the SCARABEUS website: Link.

The second webinar took place on December 5^th and presented a focus session discussing the fundamental and technical challenges posed for the design and operation of compressors in Supercritical Carbon Dioxide power systems. Three outstanding speakers covered these aspects; the session turned out very well and the feedback was very positive. Presentations can be downloaded from the SCARABEUS website: Link.

The next event will take place on March 6^th, 16.00 – 17.00 CET. It will focus on heat exchanger technology, since heat exchangers are core equipment of sCO₂ systems with an expectedly strong impact on Capital Costs and performance. Follow this link to registration: Link

Half Sized Blog Element (Single Author Style)

Half Sized Blog Element (Multi Author Style)

New paper by University of Seville presents the exergy analysis of different transcritical Carbon Dioxide cycles for CSP applications

The third episode of the webinar series on R& Activities on sCO2 in Europe organized by ETN will take place on March 6th

New paper by University of Seville presents the exergy analysis of different transcritical Carbon Dioxide cycles for CSP applications

The third episode of the webinar series on R& Activities on sCO2 in Europe organized by ETN will take place on March 6th

Full Sized Blog Element (Big Preview Pic)

New paper by University of Seville presents the exergy analysis of different transcritical Carbon Dioxide cycles for CSP applications

The third episode of the webinar series on R& Activities on sCO2 in Europe organized by ETN will take place on March 6th

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