Comparison of Cooling Different Parts in a High Pressure Ratio Centrifugal Compressor
S. Moosania,Xinqian Zheng +1 more
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TLDR
In this article, Wang et al. focused on seeking the most effective cooling place to increase the performance and reduce the impeller temperature, and they found that shroud cooling improves the compressor performance the most.Abstract:
Cooling in a centrifugal compressor can improve the performance and reduce the impeller temperature. In a centrifugal compressor, external walls can be cool down, which is known as the shell cooling. This method avoids undesirable effects induced by other cooling methods. Cooling can be applied on different external walls, such as the shroud, diffuser or the back plate. This paper focuses on seeking the most effective cooling place to increase the performance and reduce the impeller temperature. It is found that shroud cooling improves the compressor performance the most. Shroud cooling with 2400 W of cooling power increases the pressure ratio by 4.6% and efficiency by 1.49%. Each 500 W increase in the shroud cooling power, increases the efficiency by 0.3%. Diffuser cooling and back plate cooling have an identical effect on the polytropic efficiency. However, back plate cooling increases the pressure ratio more than diffuser cooling. Furthermore, only back plate cooling reduces the impeller temperature, and with 2400 W of cooling power, the impeller temperature reduces by 45 K.read more
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References
More filters
Journal ArticleDOI
Two-equation eddy-viscosity turbulence models for engineering applications
TL;DR: In this paper, two new two-equation eddy-viscosity turbulence models are presented, which combine different elements of existing models that are considered superior to their alternatives.
Computational heat transfer
TL;DR: In this article, the authors present numerical methods for Conduction heat transfer and convection heat transfer, as well as a combined modes and process application for both types of heat transfer methods.
Journal ArticleDOI
The study of capacity enhancement of the Chabahar gas turbine installation using an absorption chiller
TL;DR: In this article, an overview of an intake air-cooling system that uses a steam absorption chiller and an air cooler to address the above problem in the Chabahar power plant is presented.
Journal ArticleDOI
Thermodynamic Analyses of Wet Compression Process in the Compressor of Gas Turbine
TL;DR: In this article, the authors established a thermodynamic model of wet compression process and investigated the topics of ideal wet compression, actual wet compression and water droplet evaporative rate, wet compression work, inlet evaporative cooling, concept of wet compress efficiency, aerodynamic breaking of water droplets etc.