Presentations of the second webinar on R& Activities on sCO2 in Europe already available

As already published on this website, the CO2OLHEAT Project coordinated by ETN Global is organizing, since 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 second webinar, held on December 5th, gathered a very large number of people interested in understanding the fundamentals of sCO2 compressor design and operation as well as the technical challenges that remain hindering the commercial deployment of sCO2 power cycles. Click here to download the presentations in a single file and get ready for the third webinar in Q3 2023: Component Challenge – Compressors.

 

 

 

The second episode of the webinar series on R& Activities on sCO2 in Europe organized by ETN will take place on December 5th

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 22nd, 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 is coming soon and it will be focused on “compressors”, since this was highlighted as one of the most critical research areas in order to deploy supercritical CO2 power cycles commercially. Three outstanding speakers will cover both fundamentals of sCO2 compressor design as well as technical challenges and industrial experiences: Giacomo Persico (Politecnico di Milano), Marco Ruggiero (Baker-Hughes) and Rasmus Rubycz (Atlas-Copco).

 

The event will take place on December 5th, 14.00 – 15.00 CET. Follow this link to registration: https://lnkd.in/eAtxEwZk

 

 

Laboratorio Energia e Ambiente Piacenza working on the socio-economic assessment of the technology

Laboratorio Energia e Ambiente Piacenza working on the socio-economic assessment of the technology

 

 

The team led by Marco Gabba at the Laboratorio Energia e Ambiente Piacenza is working on Task 5.5 of the project, focused on natural capital valuation and socio-economic assessment. To this end, Gabba’s team has set up a survey, with the objective to evaluate the advantages, costs and risks of a concentrating solar plant using a CO2-based mixture as working fluid starting from the assessments of experts / technicians in the sector, through a series of structured questions with quantitative parameters.

 

This is an excellent opportunity for anyone interested in contributing to and influencing the development of new generation Concentrated Solar Plants. Answering the survey takes less than ten minutes and the data collected are strictly technical, not including any personal information.

If you would like to provide your input, follow this link: https://lnkd.in/e5Z_gdxV

 

Thank you very much for your input!!!

SCARABEUS present at the Solar Helix meeting in Madrid

The Dissemination Coordinator of SCARABEUS, Prof. David Sánchez from University of Seville, has been invited to join a clustering session organized by the ASTEP project: Application of Solar Thermal Energy to Processes . ASTEP is funded by the Horizon 2020 programme of the European Commission, under Grant Agreement Ni. 884411, and its main objective is to successfully demonstrate the viability of applying solar thermal energy to partially cover heating, and heating and cooling demands on two different relevant industrial demo sites located on two different climate regions, and to further develop the implementation of solar thermal energy in industrial processes up to 400 ºC. More information about this project, coordinated by Universidad Nacional de Educación a Distancia – UNED (Spain), is available on their website: https://astepproject.eu/

 

With the aim to explore opportunities for joint dissemination and exploitation in the future, the clustering activity held on October 20th is an excellent opportunity to get acquainted with the portfolio of collaborative projects investigating how solar energy can be integrated into thermal process for the industry and to generate electric power.

 

Agenda of the meeting. Clustering activity scheduled at 15.00 – 16.30

SCARABEUS present at the ASME Turbo Expo conference in Rotterdam, The Netherlands

The Turbo Expo conference gathers the leading professionals in power and propulsion technologies based on rotating equipment from around the world. The conference is organized by the International Gas Turbine Institute of the American Society of Mechanical Engineers and is held annually in either Europe or North America, with an attendance of over 2000 delegates from industry, academia and government. This year, the conference was held in Rotterdam, The Netherlands, in June 13-17.

 

SCARABEUS was very well represented by the partners, presenting the latest progress made in each area of research:

 

  1. Illyes et al., Design of an Air-Cooled Condenser for CO2-Based Mixtures: Model Development, Validation and Heat Exchange Gain with Internal Microfins, Paper GT2022-82438 in Technical Session 33-05.
  2. Liao et al., Life Cycle Assessment of Innovative Concentrated Solar Power Plants Using Supercritical Carbon Dioxide Mixtures, Paper GT2022-83576 in Technical Session 33-08.
  3. Putelli et al., Preliminary Analysis of High-Temperature Corrosion of Metallic Alloys with CO2 and CO2-Based Working Mixtures for Power Plants Applications, Paper GT2022-84197 in Technical Session 33-08
  4. Abdeldayem et al., Integrated Aerodynamic and Structural Blade Shape Optimisation of Axial Turbines Operating With Supercritical Carbon Dioxide Blended with Dopants, Paper GT2022-81223 in Technical Session 33-08

 

In addition to this, the Dissemination Coordinator of SCARABEUS (Prof. D. Sánchez) organizer a panel session on Large R&D Project Development in Europe, along with Renaud Le Pierres (Heatric).

The technical papers will be published in Open-Access in the conference proceedings. For the panel discussion, you can contact Prof. Sánchez to get a summary presentation (ds@us.es)

Presentations from the panel session on Role of CSP in the future energy landscape now available for download

If you enjoyed the panel session on the Role of CSP in the future energy landscape organized by the SCARABEUS project at University of Seville on April 20th, or if you missed this excellent opportunity to get acquainted with the views from the industry, government and scientific community, you can now download the presentations from the links below.

 

Decarbonising industry through science for policy

Dr. Sonia Fereres.

Scientific Project Officer JRC B5 (Circular Economy and Industrial Leadership), European Commission.

Challenges of CSP Technology in the Energy Transition   

Dr. Ana Bernardos.

Head of Photo-thermal Innovation and Technological Development Unit. Solar Energy Technologies and Storage Department. CENER.

CSP definition, services and future.

Dr. Gonzalo Martín Barrera

Secretary General of Protermosolar

 

 

 

SCO2-Flex Final Event: The Role of sCO2 cycles in Europe’s future energy system

SCO2-Flex Final Event: The Role of sCO2 cycles in Europe’s future energy system

On the 16th June 2021 the Sco2-Flex project will host its final event to present the results of the project and also introduce 5 other Horizon 2020 projects working with sco2 technology. 

In the context of the EU’s energy transition, the last few years have seen the potential of supercritical CO2 (carbon dioxide) cycles emerge as an efficient replacement of steam in the cycles converting heat into power, leading to a more flexible and lower-emission electricity production.

 

Indeed, since they can be adapted to any type of production (from conventional production to heat recovery, including nuclear and renewable energy), sCO2 cycles offer very interesting prospects in terms of increased efficiency, flexibility, cost control and reduced environmental impact.

 

All over the world, numerous research projects and demonstrators are being set up, and Europe is positioning itself as one of the players in this area. The number of research projects on sCO2, financed by the European Commission, has been increasing for more than 6 years and demonstrates the dynamics of European academic and industrial actors.

 

Given this fact, the event proposed within the framework of the sCO2-flex project aims to show the versatility of sCO2 cycles in energy production as well as the objectives and results obtained by the actors of these European projects.

In addition to a presentation by the European Commission, 6 projects will present their vision of the potential of sCO2 cycles. They are:

 

Check out the full Agenda and to register please click HERE

 

The event will take place online from 2pm to 5pm CET.

 

Registrations will close on the 15th June or until hosting capacity is reached. After registering, you will be sent a link to join the online session the day before the event.

Carbon Dioxide mixtures at the 4th European sCO2 Conference for Energy Systems, Prague

The 4th edition of the European sCO2 Conference for Energy Systems, held virtually on March 23-24, gathered some forty excellent works presented by international authors. The number of attendees and quality of works presented confirmed that the sCO2 community is vibrant and the future of the technology looks bright.

A number of very interesting papers dedicated to CO2 blends triggered the interest of the SCARABEUS consortium:

  • 1 Valencia Chapi, R., Fierros-Peraza, O., Coco-Enríquez, L., Muñoz-Antón, J., Modeling and study of a printed circuit heat exchanger for Brayton power cycles using supercritical CO2 mixtures as working fluid (Universidad Politécnica de Madrid)
  • 2 Ayub, A., Di Marcoberardino, G., Invernizzi, C.M., Iora, P., Advanced thermodynamic power cycles utilizing carbon dioxide based mixtures as working fluids for high temperature waste heat recovery (University of Brescia)
  • 3 Rath, S., Mickoleit, E., Gampe, U., Breitkopf, C., Jäger, A., Study of the influence of additives to CO2 on the performance parameters of a sCO2-cycle (TU Dresden)

These added to two works by University of Seville and City, University of London, presented on behalf of the consortium:

  • Aqel, O., White, M., Sayma, A., Binary interaction uncertainty in the optimization of a transcritical cycle: consequences on cycle and turbine design (City, University of London)
  • Crespi, F., Rodríguez-de Arriba, P., Sánchez, D., Ayub, A., Di Marcoberardino, G., Invernizzi, C.M., Martínez, G.S., Iora, P., Di Bona, D., Binotti, M., Manzolini, G.,  Thermal efficiency gains enabled by using supercritical CO2 mixtures in Concentrated Solar Power applications (University of Seville, Politecnico di Milano, University of Brescia, LEAP)

Different CO2 mixtures were proposed for Concentrated Solar Power and Waste Heat Recovery applications. Rath et al. performed a vast screening of 135 candidates out which five were selected: Krypton, Xenon, Carbonyl sulfide (COS), Propane and Sulfur hexafluoride for WHR systems. For the same application, Ayub et al. studied CO2-Novec mixtures in three different layouts, concluding that a 3 percentage point gain with respect to pure CO2 seems possible. Regarding CSP, Crespi et al. investigated the use of CO2-C6F6 and CO2-TiCl4 mixtures, coming to the conclusion that it is possible for the power block to achieve and even exceed 50% thermal efficiency even under semi-arid boundary conditions, provided that the suitable cycle layout is selected for each working fluid-was achievable. Also for CSP plants, Valencia-Chapi et al. modelled a printed circuit heat exchanger and studied its performance for different CO2 mixtures, noting that heat transfer coefficients of the mixtures were higher than those of pure CO2; this favours lower heat exchang areas. Finally, the turbine of large power blocks running on CO2-C6F6, CO2-H2S and CO2-NOD (non-organic dopant) were studied by Aqel, White & Sayma.

Common to all work was the emphasis on the suitable fluid modelling of CO2 mixtures. In the work of Ayub et al., binary interaction parameters of different CO2 mixtures (Novec 5110, Novec 649, R134a, HFO1234yf and HFO1234ze(E)) were estimated using experimental VLE data from literature and then applying Peng-Robinson with Van der Walls mixing rule to estimate thermodynamic properties. The same fluid model was used by Crespi et al. for CO2-C6F6 and CO2-TiCl4 mixtures. Valencia-Chapi et al. modelled CO2 mixtures using the Aungier-Redlich-Kwong real gas model. Aqel, White & Sayma studied the influence of four different Equations of State and of the uncertainty in the estimates of binary interaction parameters on cycle performance and turbine geometry. Rath et al. use a predictive model to calculate mixture properties based on the best available EoS for the pure components.

In addition to the works by Aqel et al. and Crespi et al., which describe the latest results obtained by the SCARABEUS consortium, a series of works developed by other projects funded by the European Commission (sCO2 Hero and sCO2 Flex) were presented at the conference. Moreover, several interesting topics regarding sCO2 cycle performance, turbomachinery and heat exchanger design and novel sCO2 cycle configurations have been thoroughly discussed. The entire set of presentations and papers are available online in the conference repository (https://sco2.eu/conference-repository/4th-conference-online/) so, if you wish to take a closer look at some of the works, just follow this link and enjoy!

 

Preliminary heat transfer experiments at TU Wien

One of the major goals of the SCARABEUS project is to show the feasibility of the innovative air cooled condenser (ACC) through experiments in Vienna. This heat exchanger is a crucial component in the proposed technology by enabling dry cooling in warm areas where one would typically find Concentrated Solar Power plants.

For down-sizing and thereby reducing the costs, enhanced finned tubes on the inside (CO2 side) will be used. In the course of the design process of Kelvion, experimental measurements at TU Wien are essential to evaluate the heat transfer coefficients on the CO2 side.

To do so, the existing test rig at TU Wien was modified. Originally, in the former project for which the rig was designed and constructed, this was able to perform a full Rankine cycle at a maximum CO2 temperature of 350 °C and a pressure of up to 240 bar. For the heat transfer measurements, maximum temperature and pressure were temporarily reduced, since only the low pressure side is of interest.  After the expansion valve, which represents the turbine, two heat exchangers are now located: the precooler and the test tube.

The test tube is a tube-in-tube heat exchanger of 1 m length. Water was chosen as the cooling medium. In a numerical study, Kelvion determined two types of fins considering number, height, thickness and angle of the fins. There will be three test tubes tested at TU Wien in total:

  • BARE test tube
    • Used as a reference without fins
  • COOLING test tube
    • Fins designed to enhance the heat transfer when cooling down superheated CO2
  • CONDENSING test tube
    • Fins designed to enhance the heat transfer when condensing the CO2

The precooler´s purpose is to specifically control the conditions of CO2 at the inlet of the test tube. The test conditions will cover a range of conditions we expect at the ACC in the future which will show dependencies of the heat transfer on:

  • 2 pressures
  • 3 CO2 mass flows
  • 2 CO2 inlet temperatures
  • 5 values of inlet vapor content

To show the impact of an additive on the heat transfer, the heat transfer of a blend of CO2 with R1234ze will be examined and compared to pure CO2. Based on the results the ACC will be designed.

SolarPACES 2020: SCARABEUS listed as one of the flagship R&D projects in Europe by Prof. Julián Blanco, Managing Director of the Solar Platform in Almería (PSA-CIEMAT)

 

 

This year, most conferences have made the decision to go virtual in order to circumvent the limitations on mobility brought about by COVID-19. SolarPACES has been no different in this regard but the

 

Wednesday’s plenary session, chaired by Ana María Ruiz Frías (Solar Committee Chile), focused on CSP Technology Innovation. All continents were represented by high-level speakers -Australia, Asia, America and China- who introduced their vision about research priorities in Concentrating Solar Power and the tools and funding schemes to enable their accomplishment.

 

In this session, Europe was represented by Prof. Julián Blanco, Director of Plataforma Solar de Almería (CIEMAT), largest research, development and test centre in Europe for Concentrating Solar technologies. Prof. Blanco’s presentation provided an excellent summary of the current research priorities identified by the European Commission, along with a very informative review of the ongoing research activities and flagship projects in Europe. With the aim to make the presentation comprehensive, the contents were broken down into twelve R&I areas approved by the Steering Group of the Solar Energy Technology (SET) Plan in 2017.

 

The SCARABEUS consortium is grateful to Prof. Julián Blanco for making the presentation available for download (link).