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New radial turbine dynamic modelling in a low-temperature adiabatic compressed air energy storage system discharging process
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He, Wei, Wang, Jihong and Ding, Yulong (2017) New radial turbine dynamic modelling in a low-temperature adiabatic compressed air energy storage system discharging process. Energy Conversion and Management, 153 . pp. 144-156. doi:10.1016/j.enconman.2017.09.059 ISSN 0196-8904.
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Official URL: https://doi.org/10.1016/j.enconman.2017.09.059
Abstract
It is challenging to gain insight of a Compressed Air Energy Storage (CAES) system dynamic behaviour under various operation conditions due to its complexity with mixed mechanical, thermal, chemical and electrical processes in one. Although a number of studies are reported on CAES steady state and dynamic modelling to reveal its characteristics, few studies have been reported in whole CAES system dynamic modelling involving a radial turbine. This paper explores a new method to analyse the transient performance of radial turbines while it is integrated with whole low temperature Adiabatic-CAES (LTA-CAES) system. The proposed modelling method approximates the average air flow within single stator/rotor stage. By applying the principle of energy and torque balance on the transmission shaft, the dynamic speed-torque characteristics of the turbine is obtained with a “quasi dynamic iterative searching” process. The model is then integrated to a simulation platform, which is created to synchronise the wide range of time scale dynamic responses including heat transfer, mechanical and electrical energy conversion processes. As every component of the low temperature adiabatic LTA-CAES system is built on its fundamental physical and engineering principles, the model is capable of revealing the system transient characteristics. Based on the model, various simulation studies are conducted and the results are compared with the operation data. It provides a valuable tool for preliminary design of a radial turbine to test its suitability in full and partial load operation conditions and its transient behaviours.
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): | Compressed air -- Mathematical models, Energy storage -- Mathematical models | ||||||||||||
Journal or Publication Title: | Energy Conversion and Management | ||||||||||||
Publisher: | Elsevier Ltd | ||||||||||||
ISSN: | 0196-8904 | ||||||||||||
Official Date: | 1 December 2017 | ||||||||||||
Dates: |
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Volume: | 153 | ||||||||||||
Page Range: | pp. 144-156 | ||||||||||||
DOI: | 10.1016/j.enconman.2017.09.059 | ||||||||||||
Status: | Peer Reviewed | ||||||||||||
Publication Status: | Published | ||||||||||||
Access rights to Published version: | Open Access (Creative Commons) | ||||||||||||
Date of first compliant deposit: | 26 September 2017 | ||||||||||||
Date of first compliant Open Access: | 10 October 2018 | ||||||||||||
RIOXX Funder/Project Grant: |
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