scholarly journals Technical-economic evaluation of medium-power gas turbine plant with air bottoming cycle

2019 ◽  
Vol 114 ◽  
pp. 07005 ◽  
Author(s):  
Alexey V. Mikheev ◽  
Yulia M. Potanina
Keyword(s):  
Power Plant ◽  
Gas Turbine ◽  
Optimization Problems ◽  
Electric Energy ◽  
Electricity Production ◽  
Turbine Plant ◽  
Technical And Economic Analysis ◽  
Gas Turbine Plant ◽  
Gas Turbine Power Plant ◽  
Minimum Costs

A developed mathematical model of a gas turbine power plant with an additional air bottoming cycle to utilize heat of exhaust gases was used to carry out a technical and economic analysis. The approach used in the study is aimed at solving two types of optimization problems: (1) to determine the maximum net efficiency of the power plant and (2) to adjust the equipment and operating parameters for achieving minimum costs of electricity production. The study shows that the air bottoming cycle provides an increase in the net efficiency up to 44 - 48% and adds about 20% to the installed power capacity. The minimum costs of electric energy production estimated for different prices of fuel (natural gas) are competitive enough, so the gas turbine power plant with air bottoming cycle seems to be a promising technology for medium-power generation.

scholarly journals ANALYSIS OF THERMODYNAMIC CYCLE OF GAS TURBINE PLANT OF NUCLEAR MODULAR POWER INSTALLATION WITH HELIUM REACTOR

2018 ◽  
Vol 37 (2) ◽  
pp. 59-67
Author(s):  
A. A. Khalatov ◽  
S. D. Severin ◽  
T. V. Donyk
Keyword(s):  
Power Plant ◽  
Gas Turbine ◽  
Nuclear Power ◽  
Thermodynamic Cycle ◽  
Fourth Generation ◽  
Working Process ◽  
Turbine Plant ◽  
Energy Conversion System ◽  
Gas Turbine Plant ◽  
Gas Turbine Power Plant

The analysis of energy conversion system thermodynamics cycle for perspective modular fourth-generation nuclear power plant with high temperature helium reactor with termal capacity 250MW is represented in the article. The analysis of working process parameters influence for gas-turbine power plant of complicated thermodynamics Briton cycle on the indexes of its efficiency is represented.  

The Regenerative Heat Exchanger for Gas-turbine Power-plant

1950 ◽  
Vol 163 (1) ◽  
pp. 193-205 ◽  
Author(s):  
M. Cox ◽  
R. K. P. Stevens
Keyword(s):  
Heat Exchanger ◽  
Gas Turbine ◽  
Small Diameter ◽  
Large Space ◽  
Regenerative Heat ◽  
Turbine Plant ◽  
Rotary Disk ◽  
Gas Turbine Plant ◽  
Gas Turbine Power Plant ◽  
Transfer Properties

The desirability of using a heat exchanger to improve the efficiency of gas-turbine plant of moderate gas temperatures and pressure-ratios has often to be considered in relation to the large space requirement and cost involved in the installation of a unit of the normal tubular type. This lecture shows that the possibilities of reducing the- bulk of the heat exchanger lie mainly in the use of passages of small diameter and length. The potentialities of the regenerative type of heat exchanger, and the requirements which have to be met if a practical unit working on this principle is to be achieved, are examined. It is thought that the most practical form of regenerator is one employing a rotating heat-exchanging element, and a stationary seal system to prevent the loss of high-pressure air; the relative merits of units of this type are discussed. The main problem to be overcome is that of developing an efficient and reliable sealing system. Work at the National Gas Turbine Establishment on a rotary-disk regenerator to study the sealing and general mechanical problems is described, together with the results of tests made on a smaller unit built to determine the heat-transfer properties of heat-exchanging elements of the flame-trap type.

INCREASING THE EFFICIENCY OF MONAR GAS-STEAM PLANTS BASED ON THE USE OF DUAL-FUEL CIRCUITS

2017 ◽  
Author(s):  
Gennadii Liubchik ◽  
◽  
Nataliia Fialko ◽  
Aboubakr Regragui ◽  
Raisa Navrodskaia ◽  
...  
Keyword(s):  
Natural Gas ◽  
Gas Turbine ◽  
Calorific Value ◽  
Liquid Fuels ◽  
Electricity Production ◽  
Dual Fuel ◽  
Low Grade ◽  
Steam Generation ◽  
Turbine Plant ◽  
Gas Turbine Plant

The paper proposes new circuit solutions for dual-fuel monar gas-steam plants (DMGSP), which provide an increase in the efficiency of electricity production in these plants by replacing the use of natural gas and increasing the share of generating "energy" steam by including an additional source of generation in the technological scheme steam - "preboiler", in which steam generation occurs as a result of the use of chemical energy of low-grade solid or liquid fuels - substitutes for natural gas of low or medium calorific value. DMGSPs are considered in two variants of operation of their utilization circuit: under conditions of heating and evaporation of feeding water, or only heating of this water. The results of calculations of the effectiveness of the implementation of these schemes on the basis of a monar gas turbine plant in comparison with the basic installation "VODOLEY" and a gas turbine plant of a simple scheme are presented.

Power Generation by Low Condition Heat Generator Combined With Advanced Oxy-Fuel Combustion LNG Gas Turbine Power Plant

2011 ◽  
Author(s):  
Kanji Oshima ◽  
Yohji Uchiyama
Keyword(s):  
Power Generation ◽  
Power Plant ◽  
Gas Turbine ◽  
Power Output ◽  
Saturated Steam ◽  
Fuel Gas ◽  
Turbine Plant ◽  
Heat Generator ◽  
Reference Plant ◽  
Gas Turbine Plant

We propose a novel concept for power generation that involves the combination of a low-condition heat generator (LCHG), such as a light water nuclear reactor or a biomass combustion boiler, with an advanced closed-cycle oxy-fuel combustion gas turbine—a type of complex and efficient oxyfuel gas turbine plant, in accordance with our previous studies in combination with a simple oxy-fuel gas turbine plant. In this study, a LCHG is designed to heat water to saturated steam of a few MPa, to assist in the generation of the main working fluids, instead of a compressor used in the advanced oxy-fuel gas turbine. This saturated steam can have a lower pressure and temperature than those of an existing nuclear power plant or biomass-fired power plant. We estimated plant performances from a heat balance model based on a conceptual design of a plant for different gas turbine inlet pressures of 2.5–6.5 MPa and temperatures of 1300 and 1500°C, taking into account the work to produce O2 and capture CO2. While the net power generating efficiencies of a reference advanced oxy-fuel gas turbine plant are estimated to be about 52.0% and 56.0% at 1300 and 1500°C, respectively, and conventional steam power generation is assumed to have an efficiency of about 35% or less for pressures of 2.5–6.5 MPa, the proposed hybrid plant achieved 42.8–44.7% at 1300°C and 47.8–49.2% for 1500°C. In the proposed plant, the power output contributed by a LCHG may be obtained by subtracting the LNG contribution from the whole net power output. Even supposing that the generation efficiency of the LNG system in the proposed plant remains equal to that of the reference plant (56.0% at 1500°C), some components used in the reference plant are omitted by installation of the LCHG. The efficiency of LCHG system can be estimated 37.4% for 6.5 MPa and 33.2% for 2.5 MPa, even though the LHCG system may be regarded as consisting of fewer plant facilities than a conventional LCHG power plant.

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.

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