Modification in Parameters Affecting Ejector Flow Performance in the Condenser of Thermal Power Plants

Abstract

This study investigates the utilization of high-pressure steam as the primary fluid and air as the secondary fluid in ejector systems, where the air is drawn in by the steam. Extensive simulations have been performed to enhance the performance of the ejector by analyzing the steady-state flow regimes inside it. After meticulous examination, adjustments have been made to the length of the throat, the length of divergence, and the pressure of the motive steam. The ANSYS Computational Fluid Dynamics analysis program has been utilized, and the results have been deemed adequate. The ratio of throat length, divergence length, and motive steam pressure had an impact on both suction pressure and ejector performance. Upon conducting a thorough examination and making the necessary modifications to the ejector, the desired vacuum conditions have been successfully achieved. These conditions include a throat length of 0.3312m, a divergence length of 0.828m, and the most effective ejector movement achieved by utilizing a motive steam pressure of 15 bar. The researchers have discovered that a vacuum pressure of -1.003 bar has exhibited greater performance compared to the average ejector performance.
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