Research progress on thermodynamic performance of supercritical CO2 dry gas seal
The deployment of dry gas seal technology in supercritical carbon dioxide Brayton cycle turbine machinery,endowed with its exceptional sealing efficacy and stability,confers a safeguard for the secure operation of rotating machinery,while notably enhancing the shaft end sealing effect.In light of the distinctive physical properties of the sealing medium and the necessities of high-parameters operational milieu,intricate fluid lubrication theory is invoked in the investigation of thermodynamic performance of S-CO2 dry gas seal.Owing to above discussion,this paper centered on the action mechanism and influence law of multifarious fluid effects and phase transition characteristics on the performance of S-CO2 dry gas seal and flow heat transfer characteristics,elucidated in meticulous detail the analytical models and solution algorithms commonly employed in theoretical research,and thoroughly reviewed the theoretical and experimental investigations on the thermodynamic performance of S-CO2 dry gas seal domestically and internationally.Subsequently,combining the demands of the field and existing advanced technologies,future developmental research trajectories were further proposed,with the aim of furnishing a theoretical reference for further inquiry into the correlative research and advancing the more application of dry gas seal technology in the future energy sector.
supercritical carbon dioxidedry gas sealphase changefluid lubrication theorythermodynamic performance
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