Dynamic modelling and simulation of CSP plant based on supercritical carbon dioxide closed Brayton cycle

Research output: Chapter in Book/Report/Conference proceedingConference article in proceedingsScientificpeer-review

5 Citations (Scopus)

Abstract

Supercritical carbon dioxide (sCO2) has recently gained a lot of interest as a working fluid in different power generation applications. For concentrated solar power (CSP) applications, sCO2 provides especially interesting option if it could be used both as the heat transfer fluid (HTF) in the solar field and as the working fluid in the power conversion unit. This work presents development of a dynamic model of CSP plant concept, in which sCO2 is used for extracting the solar heat in Linear Fresnel collector field, and directly applied as the working fluid in the recuperative Brayton cycle; these both in a single flow loop. We consider the dynamic model is capable to predict the system behavior in typical operational transients in a physically plausible way. The novel concept was tested through simulation cases under different weather conditions. The results suggest that the concept can be successfully controlled and operated in the supercritical region to generate electric power during the daytime, and perform start-up and shut down procedures in order to stay overnight in sub-critical conditions. Besides the normal daily operation, the control system was demonstrated to manage disturbances due to sudden irradiance changes.
Original languageEnglish
Title of host publicationSolarPACES 2016
Subtitle of host publicationInternational Conference on Concentrating Solar Power and Chemical Energy Systems
PublisherAmerican Institute of Physics AIP
Volume1850
ISBN (Electronic)9780735415225
ISBN (Print)978-0-7354-1522-5
DOIs
Publication statusPublished - 27 Jun 2017
MoE publication typeA4 Article in a conference publication
Event22nd International Conference on Concentrating Solar Power and Chemical Energy Systems, SolarPACES 2016 - Abu Dhabi, United Arab Emirates
Duration: 11 Oct 201614 Oct 2016

Publication series

NameAIP Conference Proceedings
PublisherAmerican Institute of Physics Inc
Volume1850
ISSN (Print)0094-243X

Conference

Conference22nd International Conference on Concentrating Solar Power and Chemical Energy Systems, SolarPACES 2016
Abbreviated titleSolarPACES 2016
CountryUnited Arab Emirates
CityAbu Dhabi
Period11/10/1614/10/16

Fingerprint

Brayton cycle
Solar power plants
Carbon dioxide
Fluids
Dynamic models
Solar energy
Power generation
Heat transfer
Control systems

Keywords

  • supercritical CO2
  • concentrated solar power
  • CSP
  • Brayton cycle
  • dynamic modelling

Cite this

Hakkarainen, E., Sihvonen, T., & Lappalainen, J. (2017). Dynamic modelling and simulation of CSP plant based on supercritical carbon dioxide closed Brayton cycle. In SolarPACES 2016: International Conference on Concentrating Solar Power and Chemical Energy Systems (Vol. 1850). [070004] American Institute of Physics AIP. AIP Conference Proceedings, Vol.. 1850 https://doi.org/10.1063/1.4984418
Hakkarainen, Elina ; Sihvonen, Teemu ; Lappalainen, Jari. / Dynamic modelling and simulation of CSP plant based on supercritical carbon dioxide closed Brayton cycle. SolarPACES 2016: International Conference on Concentrating Solar Power and Chemical Energy Systems. Vol. 1850 American Institute of Physics AIP, 2017. (AIP Conference Proceedings, Vol. 1850).
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abstract = "Supercritical carbon dioxide (sCO2) has recently gained a lot of interest as a working fluid in different power generation applications. For concentrated solar power (CSP) applications, sCO2 provides especially interesting option if it could be used both as the heat transfer fluid (HTF) in the solar field and as the working fluid in the power conversion unit. This work presents development of a dynamic model of CSP plant concept, in which sCO2 is used for extracting the solar heat in Linear Fresnel collector field, and directly applied as the working fluid in the recuperative Brayton cycle; these both in a single flow loop. We consider the dynamic model is capable to predict the system behavior in typical operational transients in a physically plausible way. The novel concept was tested through simulation cases under different weather conditions. The results suggest that the concept can be successfully controlled and operated in the supercritical region to generate electric power during the daytime, and perform start-up and shut down procedures in order to stay overnight in sub-critical conditions. Besides the normal daily operation, the control system was demonstrated to manage disturbances due to sudden irradiance changes.",
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Hakkarainen, E, Sihvonen, T & Lappalainen, J 2017, Dynamic modelling and simulation of CSP plant based on supercritical carbon dioxide closed Brayton cycle. in SolarPACES 2016: International Conference on Concentrating Solar Power and Chemical Energy Systems. vol. 1850, 070004, American Institute of Physics AIP, AIP Conference Proceedings, vol. 1850, 22nd International Conference on Concentrating Solar Power and Chemical Energy Systems, SolarPACES 2016, Abu Dhabi, United Arab Emirates, 11/10/16. https://doi.org/10.1063/1.4984418

Dynamic modelling and simulation of CSP plant based on supercritical carbon dioxide closed Brayton cycle. / Hakkarainen, Elina; Sihvonen, Teemu; Lappalainen, Jari.

SolarPACES 2016: International Conference on Concentrating Solar Power and Chemical Energy Systems. Vol. 1850 American Institute of Physics AIP, 2017. 070004 (AIP Conference Proceedings, Vol. 1850).

Research output: Chapter in Book/Report/Conference proceedingConference article in proceedingsScientificpeer-review

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N2 - Supercritical carbon dioxide (sCO2) has recently gained a lot of interest as a working fluid in different power generation applications. For concentrated solar power (CSP) applications, sCO2 provides especially interesting option if it could be used both as the heat transfer fluid (HTF) in the solar field and as the working fluid in the power conversion unit. This work presents development of a dynamic model of CSP plant concept, in which sCO2 is used for extracting the solar heat in Linear Fresnel collector field, and directly applied as the working fluid in the recuperative Brayton cycle; these both in a single flow loop. We consider the dynamic model is capable to predict the system behavior in typical operational transients in a physically plausible way. The novel concept was tested through simulation cases under different weather conditions. The results suggest that the concept can be successfully controlled and operated in the supercritical region to generate electric power during the daytime, and perform start-up and shut down procedures in order to stay overnight in sub-critical conditions. Besides the normal daily operation, the control system was demonstrated to manage disturbances due to sudden irradiance changes.

AB - Supercritical carbon dioxide (sCO2) has recently gained a lot of interest as a working fluid in different power generation applications. For concentrated solar power (CSP) applications, sCO2 provides especially interesting option if it could be used both as the heat transfer fluid (HTF) in the solar field and as the working fluid in the power conversion unit. This work presents development of a dynamic model of CSP plant concept, in which sCO2 is used for extracting the solar heat in Linear Fresnel collector field, and directly applied as the working fluid in the recuperative Brayton cycle; these both in a single flow loop. We consider the dynamic model is capable to predict the system behavior in typical operational transients in a physically plausible way. The novel concept was tested through simulation cases under different weather conditions. The results suggest that the concept can be successfully controlled and operated in the supercritical region to generate electric power during the daytime, and perform start-up and shut down procedures in order to stay overnight in sub-critical conditions. Besides the normal daily operation, the control system was demonstrated to manage disturbances due to sudden irradiance changes.

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Hakkarainen E, Sihvonen T, Lappalainen J. Dynamic modelling and simulation of CSP plant based on supercritical carbon dioxide closed Brayton cycle. In SolarPACES 2016: International Conference on Concentrating Solar Power and Chemical Energy Systems. Vol. 1850. American Institute of Physics AIP. 2017. 070004. (AIP Conference Proceedings, Vol. 1850). https://doi.org/10.1063/1.4984418