Dynamic Study of Load Detachment in Supercritical Carbon Dioxide Brayton Cycle

The supercritical carbon dioxide Brayton cycle has become the choice of a wide range of users because of its higher efficiency and smaller turbine size, and is often used in space vehicles, sodium cooled fast reactors, Marine power equipment and other energy storage and power generation applications...

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Autores principales:	Lianjie Zhang, Jirí Jaromír Klemeš, Min Zeng, Ting Ma, Qiuwang Wang
Formato:	article
Lenguaje:	EN
Publicado:	AIDIC Servizi S.r.l. 2021
Materias:	Chemical engineering TP155-156 Computer engineering. Computer hardware TK7885-7895
Acceso en línea:	https://doaj.org/article/882bdadcdd10451ab89cc49b3174fc7c
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spelling	oai:doaj.org-article:882bdadcdd10451ab89cc49b3174fc7c2021-11-15T21:47:40ZDynamic Study of Load Detachment in Supercritical Carbon Dioxide Brayton Cycle10.3303/CET21881342283-9216https://doaj.org/article/882bdadcdd10451ab89cc49b3174fc7c2021-11-01T00:00:00Zhttps://www.cetjournal.it/index.php/cet/article/view/11927https://doaj.org/toc/2283-9216The supercritical carbon dioxide Brayton cycle has become the choice of a wide range of users because of its higher efficiency and smaller turbine size, and is often used in space vehicles, sodium cooled fast reactors, Marine power equipment and other energy storage and power generation applications. However, in the process of use, the detachment of the load is a common problem, if not well handled often cause the system to crash. In this paper, based on the software Simulink in MATLAB, the moment of inertia of turbine and generator is regarded as fixed value, the key parameter differential equations of Brayton cycle are derived, and the dynamic recompression and intercooling Brayton cycle models are established. The response parameters of the system after load disconnection and different time tie-back are studied. The responses of key parameters of the system after load detachment were obtained. It was found that the recompression model had higher stability under load detachment and tie-back conditions than the intercooling model, and the length of parameter variation after load detachment was linear. The earlier the tie-back was, the faster the system could restore stability.Lianjie Zhang Jirí Jaromír KlemešMin Zeng Ting MaQiuwang WangAIDIC Servizi S.r.l.articleChemical engineeringTP155-156Computer engineering. Computer hardwareTK7885-7895ENChemical Engineering Transactions, Vol 88 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Chemical engineering TP155-156 Computer engineering. Computer hardware TK7885-7895
spellingShingle	Chemical engineering TP155-156 Computer engineering. Computer hardware TK7885-7895 Lianjie Zhang Jirí Jaromír Klemeš Min Zeng Ting Ma Qiuwang Wang Dynamic Study of Load Detachment in Supercritical Carbon Dioxide Brayton Cycle
description	The supercritical carbon dioxide Brayton cycle has become the choice of a wide range of users because of its higher efficiency and smaller turbine size, and is often used in space vehicles, sodium cooled fast reactors, Marine power equipment and other energy storage and power generation applications. However, in the process of use, the detachment of the load is a common problem, if not well handled often cause the system to crash. In this paper, based on the software Simulink in MATLAB, the moment of inertia of turbine and generator is regarded as fixed value, the key parameter differential equations of Brayton cycle are derived, and the dynamic recompression and intercooling Brayton cycle models are established. The response parameters of the system after load disconnection and different time tie-back are studied. The responses of key parameters of the system after load detachment were obtained. It was found that the recompression model had higher stability under load detachment and tie-back conditions than the intercooling model, and the length of parameter variation after load detachment was linear. The earlier the tie-back was, the faster the system could restore stability.
format	article
author	Lianjie Zhang Jirí Jaromír Klemeš Min Zeng Ting Ma Qiuwang Wang
author_facet	Lianjie Zhang Jirí Jaromír Klemeš Min Zeng Ting Ma Qiuwang Wang
author_sort	Lianjie Zhang
title	Dynamic Study of Load Detachment in Supercritical Carbon Dioxide Brayton Cycle
title_short	Dynamic Study of Load Detachment in Supercritical Carbon Dioxide Brayton Cycle
title_full	Dynamic Study of Load Detachment in Supercritical Carbon Dioxide Brayton Cycle
title_fullStr	Dynamic Study of Load Detachment in Supercritical Carbon Dioxide Brayton Cycle
title_full_unstemmed	Dynamic Study of Load Detachment in Supercritical Carbon Dioxide Brayton Cycle
title_sort	dynamic study of load detachment in supercritical carbon dioxide brayton cycle
publisher	AIDIC Servizi S.r.l.
publishDate	2021
url	https://doaj.org/article/882bdadcdd10451ab89cc49b3174fc7c
work_keys_str_mv	AT lianjiezhang dynamicstudyofloaddetachmentinsupercriticalcarbondioxidebraytoncycle AT jirijaromirklemes dynamicstudyofloaddetachmentinsupercriticalcarbondioxidebraytoncycle AT minzeng dynamicstudyofloaddetachmentinsupercriticalcarbondioxidebraytoncycle AT tingma dynamicstudyofloaddetachmentinsupercriticalcarbondioxidebraytoncycle AT qiuwangwang dynamicstudyofloaddetachmentinsupercriticalcarbondioxidebraytoncycle
_version_	1718426797697138688

Dynamic Study of Load Detachment in Supercritical Carbon Dioxide Brayton Cycle

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