Investigation of the performance and flow characteristics of two-phase reaction turbines in total flow geothermal systems

Li, H., Rane, S. and Yu, Z. (2021) Investigation of the performance and flow characteristics of two-phase reaction turbines in total flow geothermal systems. Renewable Energy, 175, pp. 345-372. (doi: 10.1016/j.renene.2021.05.022)

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Abstract

In a total flow geothermal system, the two-phase turbine can generate output power and recover fresh water for the water-deficient area. The performance of the two-phase turbine under various working conditions is significantly affected by operation parameters of the geothermal system. This paper presented performance evaluation methods of two-phase turbines, including one-dimensional (1D) method, two-dimensional (2D) method and three-dimensional (3D) method. The 1D method was a fast iteration approach and could reflect average flow parameters along the impeller channel. The 2D method included nonuniform effects in the rotational direction and the 3D method could derive the complete 3D flow in the channel using CFD methods. The three models were validated with experimental results under various rotational speeds. Compared with the 3D method, the 1D method and the 2D method could significantly reduce computational time. The performance of the two-phase reaction turbine was evaluated under various working conditions. A correction method based on 1D and 3D results was proposed to generate the performance map and evaluate the influence of operation parameters of the geothermal system on the turbine performance. Proposed methods and analysis can be widely used in the design, selection and operation of two-phase reaction turbines for various thermal systems.

Item Type:Articles
Status:Published
Refereed:Yes
Glasgow Author(s) Enlighten ID:Li, Dr Hongyang and Yu, Professor Zhibin
Creator Roles:
Li, H.Conceptualization, Methodology, Software, Validation, Formal analysis, Investigation, Data curation, Writing – original draft, Visualization
Yu, Z.Conceptualization, Writing – review and editing, Supervision, Project administration, Funding acquisition
Authors: Li, H., Rane, S., and Yu, Z.
College/School:College of Science and Engineering > School of Engineering > Systems Power and Energy
Journal Name:Renewable Energy
Publisher:Elsevier
ISSN:0960-1481
ISSN (Online):1879-0682
Published Online:07 May 2021
Copyright Holders:Copyright © 2021 Elsevier Ltd.
First Published:First published in Renewable Energy 175: 345-372
Publisher Policy:Reproduced in accordance with the publisher copyright policy

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Project CodeAward NoProject NamePrincipal InvestigatorFunder's NameFunder RefLead Dept
300663Geothermally Sourced Power and Freshwater Generation for Eastern AfricaZhibin YuEngineering and Physical Sciences Research Council (EPSRC)EP/P028829/1ENG - Systems Power & Energy
172394Thermally Driven Heat Pump Based on an Integrated Thermodynamic Cycle for Low Carbon Domestic Heating (Therma-Pump)Zhibin YuEngineering and Physical Sciences Research Council (EPSRC)EP/N020472/1ENG - Systems Power & Energy
300273An ORC power plant integrated with thermal energy storage to utilise renewable heat sources for distributed H&PProject Number; 102883Zhibin YuEngineering and Physical Sciences Research Council (EPSRC)EP/R003122/1ENG - Systems Power & Energy