Experimental study and modelling of the ventilation power and maximum temperature of low-pressure steam turbine last stages at low load

Antonio Mambro, Francesco Congiu, Enzo Galloni and Laura Canale

Applied Energy, 2019, vol. 241, issue C, 59-72

Abstract: Experimental investigations on the behavior of a low-pressure turbine operating at low volume flow have been carried out. Detailed analysis of the measurements reveal a series of macroscopic correlations useful for both understanding and modelling the whole low volume flow phenomenon. A novel concept of blade saturation temperature has been introduced, while a non-dimensional group has been identified in order to provide the best correlation with the measured ventilation power. A comparison of existing ventilation power equations has been carried out, showing a clear improvement of the proposed correlation over existing ones. Finally, a simplified approach able to predict both ventilation power and maximum flow temperature is presented.

Keywords: Steam turbine; Low load operation; Ventilation power; Experimental analysis; Non-dimensional analysis; Physics based approach (search for similar items in EconPapers)
Date: 2019
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Citations: View citations in EconPapers (1)

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Persistent link: https://EconPapers.repec.org/RePEc:eee:appene:v:241:y:2019:i:c:p:59-72

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DOI: 10.1016/j.apenergy.2019.03.003

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