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Combined-cycle gas turbine power plant integration with cascaded latent heat thermal storage for fast dynamic responses
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Li, Decai, Hu, Yukun, Li, Dacheng and Wang, Jihong (2019) Combined-cycle gas turbine power plant integration with cascaded latent heat thermal storage for fast dynamic responses. Energy Conversion and Management, 183 . pp. 1-13. doi:10.1016/j.enconman.2018.12.082 ISSN 0196-8904.
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WRAP-combined-cycle-gas-turbine-power-plant-integration-cascaded-latent-heat-thermal-storage-Li-2018.pdf - Accepted Version - Requires a PDF viewer. Available under License Creative Commons Attribution Non-commercial No Derivatives 4.0. Download (1814Kb) | Preview |
Official URL: https://doi.org/10.1016/j.enconman.2018.12.082
Abstract
The combined-cycle gas turbine (CCGT) power plants are often required to provide the essential fast grid balance service between the load demand and power supply with the increase of the intermittent power generation from renewable energy sources. It is extremely challenging to ensure CCGT power plants operating flexibly and also maintaining its efficiency at the same time. This paper presents the feasibility study of a CCGT power plant combined with the cascaded latent heat storage (CLHS) for plant flexible operation. A 420 MW CCGT power plant and a CLHS dynamic models are developed in Aspen Plus based on a novel modelling approach. The plant start-up processes are studied, and large amount of thermal energy can be accumulated by CLHS during the start-up. For load-following operation, extensive dynamic simulation study is conducted and the simulation results show that the extracted exhaust gas can be used for thermal energy storage charging, and the stored heat can be discharged to produce high temperature and high pressure steam fed to the steam turbine. Besides, the stored heat can also be used to maintain the heat recovery steam generator (HRSG) under warm condition to reduce plant restart-up time. The simulation results demonstrate that the integration of CLHS with CCGT power plant is feasible during the start-up, load-following and standstill operations.
Item Type: | Journal Article | |||||||||||||||
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Subjects: | T Technology > TJ Mechanical engineering and machinery | |||||||||||||||
Divisions: | Faculty of Science, Engineering and Medicine > Engineering > Engineering | |||||||||||||||
Library of Congress Subject Headings (LCSH): | Combined cycle power plants, Heat storage, Gas-turbines | |||||||||||||||
Journal or Publication Title: | Energy Conversion and Management | |||||||||||||||
Publisher: | Elsevier Ltd | |||||||||||||||
ISSN: | 0196-8904 | |||||||||||||||
Official Date: | 1 March 2019 | |||||||||||||||
Dates: |
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Volume: | 183 | |||||||||||||||
Page Range: | pp. 1-13 | |||||||||||||||
DOI: | 10.1016/j.enconman.2018.12.082 | |||||||||||||||
Status: | Peer Reviewed | |||||||||||||||
Publication Status: | Published | |||||||||||||||
Access rights to Published version: | Restricted or Subscription Access | |||||||||||||||
Date of first compliant deposit: | 2 January 2019 | |||||||||||||||
Date of first compliant Open Access: | 15 January 2020 | |||||||||||||||
RIOXX Funder/Project Grant: |
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