scholarly journals Alternative Closed-Cycle Gas Turbine System Design Considerations for Ship Propulsion Applications

1978 ◽  
Author(s):  
S. C. Kuo ◽  
H. T. Shu
Keyword(s):  
Power Systems ◽  
System Design ◽  
Gas Turbine ◽  
Mechanical Design ◽  
Closed Cycle ◽  
Ship Propulsion ◽  
Design Alternatives ◽  
System Requirements ◽  
Optimal System Design ◽  
Selection Of

This paper discusses the major system design alternatives considered in a comprehensive system study of closed-cycle gas turbine propulsion systems for advanced ship propulsion applications. The general requirements and constraints applicable to propulsion engines for advanced ships were reviewed, and major design variances from the traditional land-based closed-cycle gas turbine power systems were identified. The potential impact of these system requirements and design variances will have on the selection of thermodynamic and mechanical design alternatives applicable to the power conversion system were evaluated, and some trade-off considerations, including the domain of optimal system design, are discussed.

scholarly journals 5 MW Closed Cycle Gas Turbine

1984 ◽  
Author(s):  
John L. Mason ◽  
Anthony Pietsch ◽  
Theodore R. Wilson ◽  
Allen D. Harper
Keyword(s):  
Power Systems ◽  
Gas Turbine ◽  
Oil Recovery ◽  
Low Cost ◽  
Pressure Ratio ◽  
Commercial Application ◽  
Solid Fuels ◽  
Closed Cycle ◽  
Emission Standards ◽  
Fluidized Bed Combustor

A novel closed-cycle gas turbine power system is now under development by the GWF Power Systems Company for cogeneration applications. Nominally the system produces 5 megawatts (MW) of electric power and 80,000 lb/hr (36,287 kg/hr) of 1000 psig (6895 kPa) steam. The heat source is an atmospheric fluidized bed combustor (AFBC) capable of using low-cost solid fuels while meeting applicable emission standards. A simple, low-pressure ratio, single spool, turbomachine is utilized. This paper describes the system and related performance, as well as the development and test efforts now being conducted. The initial commercial application of the system will be for Enhanced Oil Recovery (EOR) of the heavy crudes produced in California.

State-of-the-Art Review of Closed Cycle Gas Turbines Burning Dirty Fuels

1983 ◽  
Author(s):  
G. E. Provenzale
Keyword(s):  
Power Systems ◽  
Gas Turbine ◽  
Gas Turbines ◽  
Detailed Examination ◽  
Full Potential ◽  
Development Programs ◽  
Closed Cycle ◽  
Cost Information ◽  
Steam Power ◽  
Critical Components

The Closed Cycle Gas Turbine (CCGT) offers potential savings in operating costs due to high system efficiency and the ability to direct fire coal. However, for the full potential of CCGT to be realized, more competitive cost information must be generated, correlated, and compared with conventional steam power systems. Current development programs are intended to resolve many of the remaining uncertainties in design, performance, and cost by detailed examination and testing of critical components of CCGT coal-fired power systems. This paper reviews current technology developments and economic considerations of the closed cycle gas turbine burning dirty fuels versus conventional steam power systems.

The Nuclear Gas Turbine: Towards Realization After Half a Century of Evolution

1995 ◽  
Author(s):  
Colin F. McDonald
Keyword(s):  
Power Systems ◽  
Gas Turbine ◽  
Nuclear Reactor ◽  
Electrical Power ◽  
District Heating ◽  
Small Scale ◽  
Closed Cycle ◽  
Furnace Gases ◽  
The Usa ◽  
Space Power Systems

This paper has been written exactly 50 years after the first disclosure of a closed-cycle gas turbine concept with a simplistic uranium heater. Clearly, this plant was ahead of its time in terms of technology readiness, and the closed-cycle gas turbine was initially deployed in a cogeneration mode burning dirty fuels (e.g., coal, furnace gases). In the 1950s through the mid 1980s about 20 of these plants operated providing electrical power and district heating for European cities. The basic concept of a nuclear gas turbine plant was demonstrated in the USA on a small scale in 1961 with a mobile closed-cycle nitrogen gas turbine [330 KW(e)] coupled with a nuclear reactor. In the last three decades, closed-cycle gas turbine research and development, particularly in the U.S. has focused on space power systems, but today the utility size gas turbine-modular helium reactor (GT-MHR) is on the verge of being realized. The theme of this paper traces the half century of closed-cycle gas turbine evolution, and discusses the recent enabling technologies (e.g., magnetic bearings, compact recuperator) that now make the GT-MHR close to realization. The author would like to dedicate this paper to the late Professor Curt Keller who in 1935 filed the first closed-cycle gas turbine patent in Switzerland, and who exactly 50 years ago, first described a power plant involving the coupling of a helium gas turbine with a uranium heater.

Applying Combined Pinch and Exergy Analysis to Closed-Cycle Gas Turbine System Design

1995 ◽  
Vol 117 (1) ◽  
pp. 47-52 ◽  
Author(s):  
V. R. Dhole ◽  
J. P. Zheng
Keyword(s):  
Power Systems ◽  
Gas Turbine ◽  
Gas Turbines ◽  
Power Plants ◽  
Exergy Analysis ◽  
Energy Savings ◽  
Design Guidelines ◽  
Closed Cycle ◽  
Practical Design ◽  
Pinch Technology

Pinch technology has developed into a powerful tool for thermodynamic analysis of chemical processes and associated utilities, resulting in significant energy savings. Conventional pinch analysis identifies the most economical energy consumption in terms of heat loads and provides practical design guidelines to achieve this. However, in analyzing systems involving heat and power, for example, steam and gas turbines, etc., pure heat load analysis is insufficient. Exergy analysis, on the other hand, provides a tool for heat and power analysis, although at times it does not provide clear practical design guidelines. An appropriate combination of pinch and exergy analysis can provide practical methodology for the analysis of heat and power systems. The methodology has been successfully applied to refrigeration systems. This paper introduces the application of a combined pinch and exergy approach to commercial power plants with a demonstration example of a closed-cycle gas turbine (CCGT) system. Efficiency improvement of about 0.82 percent (50.2 to 51.02 percent) can be obtained by application of the new approach. More importantly, the approach can be used as an analysis and screening tool for the various design improvements and is generally applicable to any commercial power generation facility.

A framework to support decision making in the selection of sustainable drainage system design alternatives

2017 ◽  
Vol 201 ◽  
pp. 145-152 ◽  
Author(s):  
Mingming Wang ◽  
Chris Sweetapple ◽  
Guangtao Fu ◽  
Raziyeh Farmani ◽  
David Butler
Keyword(s):  
Decision Making ◽  
System Design ◽  
Drainage System ◽  
Design Alternatives ◽  
Support Decision Making ◽  
Selection Of

scholarly journals Development of a Ceramic Heat Exchanger for a Closed-Cycle Gas Turbine Engine

1979 ◽  
Author(s):  
M. G. Coombs
Keyword(s):  
Heat Exchanger ◽  
Power Systems ◽  
Gas Turbine ◽  
Gas Turbine Engine ◽  
Small Scale ◽  
Closed Cycle ◽  
Fabrication Technology ◽  
Turbine Engine ◽  
Heat Exchanger Design ◽  
Ceramic Components

This paper describes the development of a silicon carbide heat exchanger for the CCPS-40-1 closed-cycle gas turbine engine. This effort was part of a program to explore the use of closed-cycle power systems for utilities. The program consists of heat exchanger design, the development of a design approach for large ceramic components, the establishment of a material data base, and the development of the required fabrication technology. Small-scale ceramic heat exchangers were operated at material temperatures up to 2300 F.

scholarly journals The Coal-Burning Closed-Cycle Gas Turbine

1961 ◽  
Author(s):  
C. Keller ◽  
W. Gaehler
Keyword(s):  
Gas Turbine ◽  
Solid Fuel ◽  
Power Plants ◽  
Oil And Gas ◽  
Closed Cycle ◽  
Ship Propulsion ◽  
Coal Burning

Since 1956, when the last report on closed-cycle gas-turbine development was presented in the U. S., six solid-fuel-fired plants, rated from 2 to 13.5-mw, have come into operation. Additional oil and gas-fired installations, both for stationary power plants and ship propulsion, have been built and operated or will soon start operation. Unfortunately, none of these are in the U. S.

Preliminary Staging Selection for Gas Turbine Driven Centrifugal Gas Compressors

1973 ◽  
Author(s):  
Leon Sapiro
Keyword(s):  
Gas Turbine ◽  
Centrifugal Compressor ◽  
Mechanical Design ◽  
Optimization Procedure ◽  
Maximum Efficiency ◽  
Preliminary Design ◽  
Axial Thrust ◽  
Selection For ◽  
Multistage Centrifugal Compressor ◽  
Selection Of

A procedure for optimizing the preliminary design of a gas turbine driven multistage centrifugal compressor package is discussed. The optimization procedure is based on the variation of single-stage centrifugal compressor adiabatic efficiency as a function of specific speed and Mach number. It permits the selection of optimum impeller diameter and the number of stages to cover a prescribed compressor market zone, indicating regions of maximum efficiency. Flow limitations resulting from decreasing efficiency at off-optimum specific speeds, as well as the mechanical design limitations following excessive seal temperatures and axial thrust, are delineated. The procedure has been successfully used at the author’s company for the preliminary selection of stage geometries for a family of multistage gas compressors.

Development of Hybrid Power Systems Based on Direct Fuel Cell/Turbine Cycle

2005 ◽  
Author(s):  
Hossein Ghezel-Ayagh ◽  
Robert Sanderson ◽  
Jim Walzak
Keyword(s):  
Fuel Cell ◽  
Power Systems ◽  
Gas Turbine ◽  
Hybrid Systems ◽  
Gas Turbines ◽  
Power Plants ◽  
High Efficiency ◽  
Mechanical Design ◽  
Thermodynamic Cycle ◽  
Hybrid Power

FuelCell Energy Inc. (FCE) is developing ultra high efficiency Direct FuelCell/Turbine® (DFC/T®) hybrid power plants. Present activities are focused both on the demonstration of the DFC/T concept in small packaged hybrid power generation units for distributed generation, and the design of multi-megawatt (Multi-MW) hybrid systems for the wholesale electric power market. The development of Multi-MW DFC/T systems has been focused on the on the design of power plants with efficiencies approaching 75% (LHV of natural gas). The design efforts included thermodynamic cycle analysis of key gas turbine parameters such as compression ratio. The power plant designs were studied for near-term deployment utilizing the existing commercially available gas turbines and long-term deployment requiring advanced gas turbine technologies. A new fuel cell cluster concept was developed for mechanical design of Multi-MW systems. The concept utilizes the existing one-MW fuel cell modules as the building block for the Multi-MW hybrid systems.

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