An Evaluation of Steam Injected Combustion Turbine Systems

1981 ◽  
Vol 103 (1) ◽  
pp. 13-17 ◽  
Author(s):  
D. H. Brown ◽  
A. Cohn
Keyword(s):  
Gas Turbine ◽  
Water Consumption ◽  
High Efficiency ◽  
Air Flow ◽  
Capital Cost ◽  
Simple Cycle ◽  
Gas Turbine Combustor ◽  
Turbine Plant ◽  
Gas Turbine Plant ◽  
Distillate Fuel

Performance and economic evaluation results are presented for steam injected combustion turbine systems. The steam injected gas turbine plant shows a potential for low capital cost and high efficiency for sites where water consumption is not a deterrent. Steam produced in a heat recovery steam generator is injected into the gas turbine combustor section to the extent of 0.155 pounds steam per pound of air flow. Water consumption is estimated to be 2.5 pounds per kWh (1.13 kg/hWh). When burning distillate fuel at 2200°F (1204°C), the potential efficiency is 40 percent as compared to 38 percent for a simple cycle gas turbine, and the specific output per pound of air flow is increased by 30 percent. The estimated capital cost per kilowatt is 3 percent greater than that for the simple cycle gas turbine.

Thermodynamic Characteristics of Hybrid Solar Microgas Turbine Plants under Tropical Climate

2021 ◽  
Vol 2 (43) ◽  
pp. 20-35
Author(s):  
Andrey V. Dologlonyan ◽  
◽  
Dmitriy S. Strebkov ◽  
Valeriy T. Matveenko ◽  
◽  
...  
Keyword(s):  
Gas Turbine ◽  
Solar Collector ◽  
Heat Recovery ◽  
Tropical Climate ◽  
Simple Cycle ◽  
Turbine Engines ◽  
Gas Turbine Engines ◽  
Turbine Plant ◽  
Micro Gas Turbine ◽  
Gas Turbine Plant

The article presents the results obtained during the study of the characteristics of hybrid solar micro-gas turbine units with an integrated parabolocylindrical solar collector. The efficiency of a hybrid solar gas turbine plant depends both on the efficiency of the solar collector and the location of its integration, and on the efficiency of the gas turbine engine. (Research purpose) The research purpose is in studying hybrid solar gas turbine installations based on a parabolocylindrical focusing solar collector in combination with micro-gas turbine engines of various configurations to determine the most suitable match. (Materials and methods) The article considers four basic schemes of gas turbine engines running on organic fuel, their parameters and optimization results. The article presents the main climatic parameters for the study of the focusing solar collector, as well as the parameters of the collector itself and the main dependencies that determine its efficiency and losses. The place of integration of the focusing solar collector into the gas turbine plant was described and justified. (Results and discussion) Hybrid solar micro-gas turbine installations based on micro-gas turbine engines of a simple cycle, a simple cycle with heat recovery, a simple cycle with a turbocharger utilizer, a simple cycle with a turbocharger utilizer and heat recovery for tropical climate conditions were studied on the example of Abu Dhabi. (Conclusions) The most suitable configuration of micro-gas turbine engines for integrating a focusing solar collector is a combination of a simple cycle with a turbocharger utilizer and regeneration. The combination of micro-gas turbine engines of a simple cycle with a turbocharger heat recovery and heat recovery with an integrated focusing solar collector can relatively increase the average annual efficiency of fuel consumption of such installations in a tropical climate by 10-35 percent or more, while maintaining cogeneration capabilities.

Innovative Concepts for Auxiliary Power Generation on USN Ships

1988 ◽  
Author(s):  
Thomas L. Bowen ◽  
Jon C. Ness
Keyword(s):  
Power Generation ◽  
Gas Turbine ◽  
Simple Cycle ◽  
Turbine Plant ◽  
Advantages And Disadvantages ◽  
Auxiliary Power ◽  
Alternative Approaches ◽  
Gas Turbine Plant ◽  
And Performance ◽  
Generator Sets

Auxiliary power generation to satisfy demands for electricity and pressurized air onboard naval ships represents a significant impact on the ship’s design and performance. These demands are continually growing as newer ships require improved capabilities and shipboard systems become more complex. This paper briefy examines options to the present use of multiple, simple-cycle, gas-turbine-driven generator sets on U.S. Navy destroyers and cruisers. Improved engines for ship service generator drive applications are considered which are presently available from industry or are adapations of presently available engines. The feasibility of producing an auxiliary gas turbine from components taken from an intercooled-recuperative propulsion gas turbine is examined, as well as an integrated gas turbine plant which allows auxiliary power to be supplied as power takeoff from the propulsion gas turbine. The paper describes some of the design and performance aspects of these alternative approaches as well as some of their advantages and disadvantages.

Effect of Exhaust Cleanup Systems on Gas Turbine Combustor Selection

2003 ◽  
Author(s):  
Mario DeCorso ◽  
David L. Moen ◽  
Paul W. Pillsbury
Keyword(s):  
Gas Turbine ◽  
Diffusion Flame ◽  
Gas Turbines ◽  
Jet Engines ◽  
Gas Turbine Combustor ◽  
Turbine Plant ◽  
Fuel Flexibility ◽  
Gas Turbine Plant ◽  
Co Reduction ◽  
Reduction Catalysts

Diffusion flame combustors have served the gas turbine industry well since the invention of jet engines in the 1930’s. They provided fuel flexibility and the diffusion flame process gave the designer many options. Recently for heavy-duty land gas turbines, the need to reduce NOx emissions has led to the introduction of premixed combustor designs (Dry Low NOx - DLN) that have reduced fuel flexibility, operating range and reliability. With the increasing use and availability of Exhaust Cleanup Systems (EXCLUS) such as SCR and CO reduction catalysts, new gas turbine plant schemes that use diffusion flame combustors are back in the picture. This paper proposes a number of technique combinations that could achieve low NOx targets using diffusion flame combustors.

scholarly journals The MHTGR Gas Turbine: A Power Plant Ideally Suited to Meeting the Energy Needs of the Newly Industrializing Nations

1993 ◽  
Author(s):  
Colin F. McDonald
Keyword(s):  
Power Plant ◽  
Gas Turbine ◽  
Nuclear Power ◽  
Energy Use ◽  
High Efficiency ◽  
Living Will ◽  
Lessons Learned ◽  
Turbine Plant ◽  
Energy Needs ◽  
Gas Turbine Plant

It has been estimated, that shortly after the year 2050, the energy use in the developing nations will exceed energy use in the industrialized countries. Utilization of the human resources in the newly industrializing nations will be a key factor to ensure global economic stability, and an important element towards an increase in their standard of living will be assurance of a secure and economic source of power. Lessons learned from the industrialized nations will include avoidance of fragility of their economy based on the dependence of fossil fuels, and the negative environmental consequences; simply stated the economic future of the newly industrializing nations is very dependent on the deployment of nuclear power. The Modular High-Temperature Gas-Cooled Reactor (MHTGR), with its unquestionable safety, must be viewed as a leading candidate to meet the aforementioned energy needs. Utilizing a helium turbine power conversion system, the basic module rating is around 200 MW(e). The modular approach permits incremental expansion as the electrical grid infrastructure expands. The nuclear gas turbine plant has many attributes, including the following: (1) complete factory fabrication and assembly; (2) minimum site construction work; (3) siting flexibility (cooling water not required since economic dry cooling can be realized with the Brayton cycle); (4) operation in a cogeneration mode without loss of electrical output (i.e., steam production, desalination); and (5) increasing local participation in module fabrication as the system matures. This paper highlights the advantages of the modular nuclear gas turbine plant, and emphasizes the fact that the major components are based on proven technology. With introduction of this inherently safe, high efficiency, nuclear power plant shortly after the turn of the century, the ever-increasing demand for power throughout the 21st century by the newly industrializing nations will be assured.

Experimental Determination of the Heat Recovery Boiler Effectiveness of a Gas Turbine Plant

2014 ◽  
Vol 659 ◽  
pp. 503-508
Author(s):  
Sorin Gabriel Vernica ◽  
Aneta Hazi ◽  
Gheorghe Hazi
Keyword(s):  
Experimental Data ◽  
Gas Turbine ◽  
Heat Recovery ◽  
Heat Recovery Boiler ◽  
Experimental Point ◽  
Experimental Data Processing ◽  
Turbine Plant ◽  
Transfer Unit ◽  
Gas Turbine Plant ◽  
Recovery Boiler

Increasing the energy efficiency of a gas turbine plant can be achieved by exhaust gas heat recovery in a recovery boiler. Establishing some correlations between the parameters of the boiler and of the turbine is done usually based on mathematical models. In this paper it is determined from experimental point of view, the effectiveness of a heat recovery boiler, which operates together with a gas turbine power plant. Starting from the scheme for framing the measurement devices, we have developed a measurement procedure of the experimental data. For experimental data processing is applied the effectiveness - number of transfer unit method. Based on these experimental data we establish correlations between the recovery boiler effectiveness and the gas turbine plant characteristics. The method can be adapted depending on the type of flow in the recovery boiler.

Externally-Fired Combined Cycle Repowering of Existing Steam Plants

1993 ◽  
Author(s):  
Christian L. Vandervort ◽  
Mohammed R. Bary ◽  
Larry E. Stoddard ◽  
Steven T. Higgins
Keyword(s):  
Heat Exchanger ◽  
Steam Turbine ◽  
Gas Turbine ◽  
High Efficiency ◽  
Low Cost ◽  
Operating Experience ◽  
Capital Cost ◽  
Combined Cycle ◽  
Plant Design ◽  
Generating Capacity

The Externally-Fired Combined Cycle (EFCC) is an attractive emerging technology for powering high efficiency combined gas and steam turbine cycles with coal or other ash bearing fuels. The key near-term market for the EFCC is likely to be repowering of existing coal fueled power generation units. Repowering with an EFCC system offers utilities the ability to improve efficiency of existing plants by 25 to 60 percent, while doubling generating capacity. Repowering can be accomplished at a capital cost half that of a new facility of similar capacity. Furthermore, the EFCC concept does not require complex chemical processes, and is therefore very compatible with existing utility operating experience. In the EFCC, the heat input to the gas turbine is supplied indirectly through a ceramic heat exchanger. The heat exchanger, coupled with an atmospheric coal combustor and auxiliary components, replaces the conventional gas turbine combustor. Addition of a steam bottoming plant and exhaust cleanup system completes the combined cycle. A conceptual design has been developed for EFCC repowering of an existing reference plant which operates with a 48 MW steam turbine at a net plant efficiency of 25 percent. The repowered plant design uses a General Electric LM6000 gas turbine package in the EFCC power island. Topping the existing steam plant with the coal fueled EFCC improves efficiency to nearly 40 percent. The capital cost of this upgrade is 1,090/kW. When combined with the high efficiency, the low cost of coal, and low operation and maintenance costs, the resulting cost of electricity is competitive for base load generation.

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