A Rotor Blade Cooling Improvement for Heavy Duty Gas Turbine Using Steam and Mixed Steam/Air Cooling

1998 ◽  
Author(s):  
Ennio Carnevale ◽  
Bruno Facchini ◽  
Giovanni Ferrara ◽  
Luca Innocenti
Keyword(s):  
Gas Turbine ◽  
Rotor Blade ◽  
Cooling System ◽  
Air Cooling ◽  
Heavy Duty ◽  
Open Steam ◽  
Blade Cooling ◽  
Air Cooling System ◽  
Steam Cooling ◽  
Heavy Duty Gas Turbine

This paper proposes a theoretical study of steam cooling application for a typical rotor blade cooling system of heavy duty gas turbine. The steam cooling introduction is evaluated using open and closed loop configurations; the possible interaction of steam and air cooling is also studied; the simulation is realized with a family of modular codes developed by authors. The study is conducted with the characteristic cooling parameters (efficiency, effectiveness) analysis and by the evaluation of blade temperature distribution. The results show the possibility of a mass coolant reduction and/or, a maximum cycle temperature increase with the same cooling system used for standard air cooling. The best results are obtained with an innovative closed-open/steam-air cooling system.

Performance and Economic Enhancement of Cogeneration Gas Turbines Through Compressor Inlet Air Cooling

1993 ◽  
Author(s):  
Maurizio De Lucia ◽  
Rinaldo Bronconi ◽  
Ennio Carnevale
Keyword(s):  
Gas Turbine ◽  
Gas Turbines ◽  
Building Materials ◽  
Cooling System ◽  
Heat Rate ◽  
Air Cooling ◽  
Industrial Sectors ◽  
Compressor Inlet ◽  
Air Cooling System ◽  
Heavy Duty Gas Turbine

Gas turbine air cooling systems serve to raise performance to peak power levels during the hot months when high atmospheric temperatures cause reductions in net power output. This work describes the technical and economic advantages of providing a compressor inlet air cooling system to increase the gas turbine’s power rating and reduce its heat rate. The pros and cons of state-of-the-art cooling technologies, i.e., absorption and compression refrigeration, with and without thermal energy storage, were examined in order to select the most suitable cooling solution. Heavy-duty gas turbine cogeneration systems with and without absorption units were modeled, as well as various industrial sectors, i.e., paper and pulp, pharmaceuticals, food processing, textiles, tanning, and building materials. The ambient temperature variations were modeled so the effects of climate could be accounted for in the simulation. The results validated the advantages of gas turbine cogeneration with absorption air cooling as compared to other systems without air cooling.

Performance and Economic Enhancement of Cogeneration Gas Turbines Through Compressor Inlet Air Cooling

1994 ◽  
Vol 116 (2) ◽  
pp. 360-365 ◽  
Author(s):  
M. De Lucia ◽  
R. Bronconi ◽  
E. Carnevale
Keyword(s):  
Gas Turbine ◽  
Gas Turbines ◽  
Building Materials ◽  
Cooling System ◽  
Heat Rate ◽  
Air Cooling ◽  
Industrial Sectors ◽  
Compressor Inlet ◽  
Air Cooling System ◽  
Heavy Duty Gas Turbine

Gas turbine air cooling systems serve to raise performance to peak power levels during the hot months when high atmospheric temperatures cause reductions in net power output. This work describes the technical and economic advantages of providing a compressor inlet air cooling system to increase the gas turbine’s power rating and reduce its heat rate. The pros and cons of state-of-the-art cooling technologies, i.e., absorption and compression refrigeration, with and without thermal energy storage, were examined in order to select the most suitable cooling solution. Heavy-duty gas turbine cogeneration systems with and without absorption units were modeled, as well as various industrial sectors, i.e., paper and pulp, pharmaceuticals, food processing, textiles, tanning, and building materials. The ambient temperature variations were modeled so the effects of climate could be accounted for in the simulation. The results validated the advantages of gas turbine cogeneration with absorption air cooling as compared to other systems without air cooling.

scholarly journals Aerodynamic Design and Testing of an Improved 1st Stage Compressor Rotor for a Heavy Duty Gas Turbine

1981 ◽  
Author(s):  
I. Ispas ◽  
H. J. Zollinger
Keyword(s):  
Gas Turbine ◽  
Rotor Blade ◽  
Aerodynamic Design ◽  
Heavy Duty ◽  
High Loss ◽  
Compressor Rotor ◽  
Performance Map ◽  
Computer Codes ◽  
Heavy Duty Gas Turbine ◽  
Design And Testing

To evaluate the potential of the compressor of Sulzer’s Typ 3 gas turbine, a series of engine tests was analyzed with two computer codes. The comparison between measured and calculated performance map are given in the paper. The design goal was to find modifications, which can be applied easily to already operating engines. The simplest option-increase of shaft speed with the existing blades-would have caused high loss due to increased tip Mach number. The calculation revealed, that a newly designed first rotor blade is an appropriate modification to increase massflow and efficiency. No further change is required, because the calculations indicate, that all subsequent stages operate at near optimum incidence. The calculations were confirmed experimentally. The paper presents the new rotor blade and its influence on the compressor calculated and measured performance.

scholarly journals Thermal and Economic Analysis of Gas Turbine Using Inlet Air Cooling System

2018 ◽  
Vol 225 ◽  
pp. 01020
Author(s):  
Thamir K. Ibrahim ◽  
Mohammed K. Mohammed ◽  
Omar I. Awad ◽  
Rizalman Mamat ◽  
M. Kh Abdolbaqi
Keyword(s):  
Life Cycle ◽  
Power Systems ◽  
Gas Turbine ◽  
Life Cycle Cost ◽  
Power Plants ◽  
Cooling System ◽  
Air Cooling ◽  
Air Cooling System ◽  
Cooling Mechanism ◽  
Cooling Loads

A basic goal of operation management is to successfully complete the life cycle of power systems, with optimum output against minimal input. This document intends calculating both, the performance and the life cycle cost of a gas turbine fitted with an inlet air cooling mechanism. Correspondingly, both a thermodynamic and an economic model are drawn up, to present options towards computing the cooling loads and the life cycle costs. The primary observations indicate that around 120MWh of power is derived from gas turbine power plants incorporating the cooling mechanism, compared to 96.6 MWh for units without the mechanism, while the life cycle cost is lower for units incorporating the cooling process. This indicates benefits in having the mechanism incorporated in the architecture of a gas turbine.

scholarly journals A New Gas Turbine Cycle for Economical Power Boosting

1997 ◽  
Author(s):  
Motoaki Utamura ◽  
Isao Takehara ◽  
Nobuyuki Horii ◽  
Takaaki Kuwahara
Keyword(s):  
Gas Turbine ◽  
Water Consumption ◽  
Power Output ◽  
Water Droplet ◽  
Cooling System ◽  
Axial Flow ◽  
Water Evaporation ◽  
Air Cooling ◽  
Efficient Manner ◽  
Air Cooling System

A Moisture Air Turbine (MAT) cycle is proposed for improving the characteristics of land based gas turbine by injecting atomized water at inlet to compressor. The power boosting mechanism of MAT is understood as composits of those of following existing systems: inlet air cooling system, inter-cooling and steam injection. Experiments using a 15MW class axial flow load compressor have been carried out to reveal that water evaporation in compressor could reduce compressor work in an efficient manner. Moreover, this technology has been demonstrated by means of 130MW class simple cycle gas turbine power plant to show that a small amount of water consumption is sufficient to increase power output. Very efficient evaporation could be achieved provided the size of water droplet is controlled properly. The amount of water consumption is much less than that of conventional inlet air cooling system with cooling tower for heat rejection. Incorporating water droplet evaporation profile into consideration, realistic cycle calculation model has been developed to predict power output with water injection. It has been shown that this technology is economically achievable. It should be stressed that contrary to well known evaporative cooler, MAT cycle could provide power output at a desired value within its capability regardless of ambient humidity condition.

Rational Designing of Gas Turbine Inlet Air Cooling System

2020 ◽  
pp. 591-599 ◽  
Author(s):  
Andrii Radchenko ◽  
Lukasz Bohdal ◽  
Yang Zongming ◽  
Bohdan Portnoi ◽  
Veniamin Tkachenko
Keyword(s):  
Gas Turbine ◽  
Cooling System ◽  
Air Cooling ◽  
Turbine Inlet ◽  
Air Cooling System

Performance Evaluation of Evaporative Compressor Inlet Air Cooling System in a Gas Turbine-Based Cogeneration Plant

2012 ◽  
Author(s):  
Farshid Zabihian ◽  
Alan S. Fung ◽  
Fabio Schuler
Keyword(s):  
Power Plant ◽  
Ambient Temperature ◽  
Gas Turbine ◽  
Output Power ◽  
Cooling System ◽  
Air Cooling ◽  
Cogeneration Plant ◽  
Cooling Systems ◽  
Compressor Inlet ◽  
Air Cooling System

Gas turbine-based power plants are very sensitive to ambient conditions and their output power and efficiency can be decreased significantly with increase in the ambient temperature. Various compressor inlet air cooling systems have been proposed and utilized to reduce inlet air temperature to the system, including evaporative systems e.g. media and fogging, and mechanical cooling systems. In this work, different techniques for compressor inlet air cooling are briefly reviewed. Then, the fogging system employed in the Whitby cogeneration power plant is explained with particular attention to the location of the system installation. A model of the gas turbine-based cogeneration plant is also developed to simulate the Whitby cogeneration power plant. The effects of fogging compressor inlet air cooling system on the performance of the plant are investigated. The results indicate that at an ambient temperature of 30°C and relative humidity of 40% the inlet cooling of as high as 8.4°C is possible which can increase output power to more than 50 MW. Also, it is found that the model can predict the gas turbine exhaust temperature and the plant’s power production with the error level of lower than 0.5% and 3%, respectively.

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