After establishing the relationship between various energy losses and dimensionless operating parameters, the comparison between an optimized impeller with three-dimensional characteristics and the baseline object impeller is performed to
Read MoreIn order to explore the off-design performance of a high-pressure centrifugal compressor (HPCC) applied in the compressed air energy storage (CAES) system, the author successfully built a high-pressure centrifugal compressor test rig for CAES, whose designed inlet pressure can reach 5.5 MPa, and carried out some experiments on
Read MoreThe impeller backside cavity (IBC) is a unique structure of centrifugal compressor in compressed air energy storage (CAES) systems, which affects the aerodynamic performance of centrifugal. Expand.
Read MoreThe Taguchi design and numerical calculations are combined in this study to enhance the efficiency and operational stability of an LVTCP and reduce energy consumption. The impeller blade shape is designed using an inverse design
Read MoreDOI: 10.1016/j.egyr.2022.10.118 Corpus ID: 253209488 A novel method for work capacity calculation of centrifugal compressor impellers in energy storage systems @article{Han2022ANM, title={A novel method for work capacity calculation of
Read MoreCompressed Air Energy Storage (CAES) has tremendous promotional value in the intermittent renewable energy supply systems. CAES has special requirements for compressor (e.g. heavy load, high pressure ratio, wide range). With advantages of higher efficiency and wider operation range, IGC (Integrally Geared Compressors) is selected to
Read MoreThe system utilized the gravitational potential energy of the high-rise building to achieve energy storage in the MPS. When coupled with a water supply system, the functionality and economy of the MPS was greatly enhanced. This is also the reason why the energy loss of the impeller is relatively high under partial load (as shown in Fig. 7).
Read Moreof Energy Storage ( IF 9.4) Pub Date : 2024-05-22, DOI: 10.1016/j.est.2024.112049 Jun Yang, Xuanying the main contributor of flow structure inner the impeller concentrated near the suction surface of shroud inlet which is greatly affected by the
Read MoreA novel method for work capacity calculation of centrifugal compressor impellers in energy storage systems. Fenghui Han, Zhe Wang, +1 author. Jiajian Tan. Published in Energy Reports 1 December 2022. Engineering, Environmental Science. View via Publisher.
Read MoreLin et al. [16] analyzed the coupling characteristics of the internal flow field of the impeller backside cavity (IBC) and the compressed air energy storage (CAES) compressor under different operating conditions, and the results illustrated that the IBC had a distinctive flow field configuration and vortex properties.
Read MoreIn this study, a novel method is proposed to calculate the Euler work of impellers considering the natural prewhirl, and firstly applied to centrifugal compressors without IGVs. Stodola''s approach dealing with the slip velocity at the impeller outlet is adopted to the flow at the impeller inlet.
Read More1. Introduction. The shrouded radial turbine is usually applied to the power output device in the high-pressure stage of the large-scale compressed air energy storage (CAES) system due to its high expansion ratio, the compact structure and the low cost [1].Previous research has established that the efficiency of the CAES system shows the
Read MoreEffect of impeller and diffuser matching optimization on broadening operating range of storage pump @article{Sun2023EffectOI, title={Effect of impeller and diffuser matching optimization on broadening operating range of storage pump}, author={Ju Sun and Ji Pei and Wenjie Wang}, journal={Journal of Energy Storage}, year={2023},
Read MoreA large volute-type centrifugal pump (LVTCP) is a crucial component of a pumped-storage power station. A steady increase in the single-operation power of each large pump station gradually causes unstable operation and substantial energy loss in engineering applications. The Taguchi design and numerical calculations are combined in this study to enhance
Read MoreRobust energy storage performance enabled by the interacting interface of an epitaxial hybrid nanostructure based flexible supercapacitor. Monika Sharma, Nayab Hussain, Saransha Mohanty, Panchanan Puzari, Pritam Deb.
Read MoreThe design process is supported by CFD analysis and validated by experimental data. Deriaz solution is suitable in pumped hydro energy storage at high-variable load. The hydraulic efficiency in designed pump mode is over 80% for wide partial load. The hydraulic efficiency reaches 91% in designed turbine mode.
Read MoreDOI: 10.1016/j.est.2022.104024 Corpus ID: 246842169 Flow characteristics of impeller backside cavity and its effects on the centrifugal compressor for compressed air energy storage @article{Lin2022FlowCO, title={Flow characteristics of impeller backside cavity
Read MoreThe influence of unstable flow structures, such as jet-wake and secondary flow, on the energy conversion capacity of the impeller, is elaborated. The energy conversion mechanism in the impeller is revealed. The research results can further improve the PAT
Read MoreA large volute-type centrifugal pump (LVTCP) is a crucial component of a pumped-storage power station. A steady increase in the single-operation power of each large pump station gradually causes unstable operation and substantial energy loss in engineering applications. The Taguchi design and numerical calculations are combined in this study to enhance
Read MoreA novel method based on fuzzy logic to evaluate the storage and backup systems in determining the optimal size of a hybrid renewable energy system. Sayyed Mostafa Mahmoudi, Akbar Maleki, Dariush Rezaei Ochbelagh. Article
Read MoreSeawater-pumped storage power station (Fig. 1) is an innovative form of pumped storage power generating that utilizes seawater as the operating medium [1] seawater-pumped storage power stations, vertical centrifugal pumps play a vital role. Its main functions include pumping seawater from low-water areas to high-water areas for
Read MoreIn terms of storage capacity and system life, mechanical energy storage is still the dominant technology for large-scale energy storage. Currently, PHES is the most important commercial energy storage technology and makes up 89.3 % of the storage capacity in China [9]. The fundamental principle of PHES is to convert energy from
Read MoreIt''s necessary to develop physical understandings on the internal flow and losses inside the impeller, shroud cavity and backside cavity by the physical synergy relationship between some key quantities, which is innovatively applied to the internal
Read MoreFor the one-dimensional design of centrifugal compressor, the energy to be added to the airflow is generally calculated according to the pressure requirements at the design condition, and then the aerodynamic and geometric parameters of the impeller are
Read MoreAs the basis for centrifugal compressor design, the traditional one-dimensional scheme assumes that there is no flow prewhirl at the impeller inlet (i.e., C1u=0) when inlet guide
Read MoreThe internal flow field and loss distributions are quite complicated in the high-pressure compressor with shroud and backside cavity applied in the compressed air energy storage (CAES) system.
Read MoreIn the energy storage process (ESP), the two compressors are driven by off-peak power or renewable energy and compress the air to the air storage tank (AST). In the energy-releasing process (ERP), the high pressure air in the AST will be released under the regulation of the throttling valve to drive the turbines to generate electricity.
Read MoreIn this study, a novel method is proposed to calculate the Euler work of impellers considering the natural prewhirl, and firstly applied to centrifugal compressors without IGVs. Stodola''s approach dealing with the slip velocity at the impeller outlet is adopted to the
Read MoreRequest PDF | On Jul 1, 2023, Guangyao An and others published Investigation of the unsteady flow in a transonic axial compressor adopted in the compressed air energy storage
Read MoreIn order to improve the accuracy of numerical simulation for compressor aerodynamic performance, and to understand the interaction and internal flow characteristics of each compressor component,
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