The steam consumption in a turbine within an operating pressure range determines the effectiveness of thermal energy conversion to electric power generation in a turbo-alternator. The low pressure (LP) stage of the steam turbine produces largest amount of steam to shaft-power in comparison to other stages of turbine although susceptible to various additional losses due to condensation of wet steam near penultimate and ultimate stages. The surface deposition in blade is caused by inertial impaction and turbulent-diffusion. With increasing blade stagger angle along the larger diameter of blading, the fractional deposition of wet steam is largely influenced by blade shape. From this background, the aim of this work is to predict the effect of mathematical models through computational fluid dynamics analysis on the characterization of thermodynamic and mechanical loss components based on unsaturated vapor water droplet size and pressure zones in LP stages of steam turbine and to investigate the influence of droplet size and rotor blade profile on cumulative energy losses due to condensation and provide an indication about the possible conceptual optimization of blade profile design to minimize moisture-induced energy losses.
Skip Nav Destination
Article navigation
July 2018
Research-Article
Investigation of Energy Loss on Fractional Deposition in Last Stages of Condensing Steam Turbine Due to Blade Shape and Moisture Droplet Size
Bidesh Sengupta,
Bidesh Sengupta
Assistant Professor,
Modern Institute of Engineering
& Technology,
Hooghly 712123, West Bengal, India
e-mail: bideshsengupta.08@gmail.com
Modern Institute of Engineering
& Technology,
Hooghly 712123, West Bengal, India
e-mail: bideshsengupta.08@gmail.com
Search for other works by this author on:
Chittatosh Bhattacharya
Chittatosh Bhattacharya
Associate Professor,
National Power Training Institute,
Durgapur 713216, West Bengal, India
e-mail: chittatoshbhattacharya@asme.org
National Power Training Institute,
Durgapur 713216, West Bengal, India
e-mail: chittatoshbhattacharya@asme.org
Search for other works by this author on:
Bidesh Sengupta
Assistant Professor,
Modern Institute of Engineering
& Technology,
Hooghly 712123, West Bengal, India
e-mail: bideshsengupta.08@gmail.com
Modern Institute of Engineering
& Technology,
Hooghly 712123, West Bengal, India
e-mail: bideshsengupta.08@gmail.com
Chittatosh Bhattacharya
Associate Professor,
National Power Training Institute,
Durgapur 713216, West Bengal, India
e-mail: chittatoshbhattacharya@asme.org
National Power Training Institute,
Durgapur 713216, West Bengal, India
e-mail: chittatoshbhattacharya@asme.org
1Corresponding author.
Contributed by the Turbomachinery Committee of ASME for publication in the JOURNAL OF ENGINEERING FOR GAS TURBINES AND POWER. Manuscript received June 11, 2017; final manuscript received October 12, 2017; published online April 12, 2018. Assoc. Editor: Klaus Dobbeling.
J. Eng. Gas Turbines Power. Jul 2018, 140(7): 072601 (8 pages)
Published Online: April 12, 2018
Article history
Received:
June 11, 2017
Revised:
October 12, 2017
Citation
Sengupta, B., and Bhattacharya, C. (April 12, 2018). "Investigation of Energy Loss on Fractional Deposition in Last Stages of Condensing Steam Turbine Due to Blade Shape and Moisture Droplet Size." ASME. J. Eng. Gas Turbines Power. July 2018; 140(7): 072601. https://doi.org/10.1115/1.4038544
Download citation file:
Get Email Alerts
Cited By
A Multi-Stage Nonlinear Method for Aeroengine Health Parameter Estimation Based on Adjacent Operating Points
J. Eng. Gas Turbines Power
A Combined Experimental and Turbulence-Resolved Modeling Approach for Aeroengine Turbine Rim Seals
J. Eng. Gas Turbines Power (August 2024)
Related Articles
Numerical and Experimental Investigations of Steam Condensation in LP Part of a Large Power Turbine
J. Fluids Eng (April,2009)
Two-Phase Flow Modeling and Measurements in Low-Pressure Turbines—Part II: Turbine Wetness Measurement and Comparison to Computational Fluid Dynamics-Predictions
J. Eng. Gas Turbines Power (April,2015)
Two-Phase Flow Modeling and Measurements in Low-Pressure Turbines—Part I: Numerical Validation of Wet Steam Models and Turbine Modeling
J. Eng. Gas Turbines Power (April,2015)
Numerical Model of Liquid Film Formation and Breakup in Last Stage of a Low-Pressure Steam Turbine
J. Eng. Gas Turbines Power (March,2018)
Related Chapters
Introduction
Consensus on Operating Practices for Control of Water and Steam Chemistry in Combined Cycle and Cogeneration
Combined Cycle Power Plant
Energy and Power Generation Handbook: Established and Emerging Technologies
The Effect of Droplet Gravity on the Superhydrophobic Surface
International Conference on Mechanical and Electrical Technology, 3rd, (ICMET-China 2011), Volumes 1–3