scholarly journals Thermodynamics performance optimization of a hybrid solar gas turbine power plant in Colombia

2022 ◽  
Vol 2163 (1) ◽  
pp. 012004
Author(s):  
F Moreno-Gamboa ◽  
J C Acevedo-Paez ◽  
D Sanin-Villa
Keyword(s):  
Power Plant ◽  
Solar Radiation ◽  
Gas Turbine ◽  
Power Output ◽  
Performance Optimization ◽  
Pressure Ratio ◽  
Direct Solar Radiation ◽  
Performance Point ◽  
Overall Efficiency ◽  
Gas Turbine Power Plant

Abstract A thermodynamic model is presented for evaluation of a solar hybrid gas-turbine power plant. The model uses variable ambient temperature and estimates direct solar radiation at different day times. The plant is evaluated in Barranquilla, Colombia, with a solar concentration system and a combustion chamber that burns natural gas. The hybrid system enables to maintain almost constant the power output throughout day. The model allows optimizing the different plant parameters and evaluating maximum performance point. This work presents pressure ratio ranges where the maximum values of overall efficiency, power output, thermal engine efficiency and fuel conversion rate are found. The study is based on the environmental conditions of Barranquilla, Colombia. The results obtained shows that optimum pressure ratio range for power output and overall efficiency is between 6.4 and 8.3, when direct solar radiation its maximum at noon. This thermodynamic analysis is necessary to design new generations of solar thermal power plants.

Thermodynamic Optimization of a Gas Turbine Power Plant With Pressure Drop Irreversibilities

1998 ◽  
Vol 120 (3) ◽  
pp. 233-240 ◽  
Author(s):  
V. Radcenco ◽  
J. V. C. Vargas ◽  
A. Bejan
Keyword(s):  
Power Plant ◽  
Gas Turbine ◽  
Flow Rate ◽  
Power Output ◽  
Pressure Ratio ◽  
Plant Size ◽  
Fuel Flow Rate ◽  
Flow Area ◽  
Fuel Flow ◽  
Gas Turbine Power Plant

In this paper we show that the thermodynamic performance of a gas turbine power plant can be optimized by adjusting the flow rate and the distribution of pressure losses along the flow path. Specifically, we show that the power output has a maximum with respect to the fuel flow rate or any of the pressure drops. The maximized power output has additional maxima with respect to the overall pressure ratio and overall temperature ratio. When the optimization is performed subject to a fixed fuel flow rate, and the power plant size is constrained, the power output and efficiency can be maximized again by properly allocating the fixed total flow area among the compressor inlet and the turbine outlet.

scholarly journals A Proper Shape of the Trailing Edge Modification to Solve a Housing Damage Problem in a Gas Turbine Power Plant

Processes ◽  
2021 ◽  
Vol 9 (4) ◽  
pp. 705
Author(s):  
Thodsaphon Jansaengsuk ◽  
Mongkol Kaewbumrung ◽  
Wutthikrai Busayaporn ◽  
Jatuporn Thongsri
Keyword(s):  
Power Plant ◽  
Gas Turbine ◽  
Structural Dynamics ◽  
Pressure Ratio ◽  
Equivalent Stress ◽  
Total Deformation ◽  
Trailing Edge ◽  
Housing Damage ◽  
The Difference ◽  
Gas Turbine Power Plant

To solve the housing damage problem of a fractured compressor blade (CB) caused by an impact on the inner casing of a gas turbine in the seventh stage (from 15 stages), modifications of the trailing edge (TE) of the CB have been proposed, namely 6.5 mm curved cutting and a combination of 4 mm straight cutting with 6.5 mm curved cutting. The simulation results of the modifications in both aerodynamics variables Cl and Cd and the pressure ratio, including structural dynamics such as a normalized power spectrum, frequency, total deformation, equivalent stress, and the safety factor, found that 6.5 mm curved cutting could deliver the aerodynamics and structural dynamics similar to the original CB. This result also overcomes the previous work that proposed 5.0 mm straight cutting. This work also indicates that the operation of a CB gives uneven pressure and temperature, which get higher in the TE area. The slightly modified CB can present the difference in the properties of both the aerodynamics and the structural dynamics. Therefore, any modifications of the TE should be investigated for both properties simultaneously. Finally, the results from this work can be very useful information for the modification of the CB in the housing damage problem of the other rotating types of machinery in a gas turbine power plant.

Maximum overall efficiency for a solar-driven gas turbine power plant

2012 ◽  
Vol 37 (13) ◽  
pp. 1580-1591 ◽  
Author(s):  
Susana Sánchez-Orgaz ◽  
Alejandro Medina ◽  
Antonio Calvo Hernández
Keyword(s):  
Power Plant ◽  
Gas Turbine ◽  
Overall Efficiency ◽  
Gas Turbine Power Plant

scholarly journals Parametric Performance of Ultra-light Gas Turbine Power Plant for Heavy Lift Multicopters Flight Systems Using Astra - Russian Aviation Engine Optimization Software

2018 ◽  
Vol 220 ◽  
pp. 03011
Author(s):  
T. Aurthur Vimalachandran ◽  
Andrey Yurievich Tkachenko ◽  
Viktor Nikolaevich Rybakov
Keyword(s):  
Power Plant ◽  
Gas Turbine ◽  
Power Output ◽  
Thermal Efficiency ◽  
Parametric Analysis ◽  
Fuel Efficiency ◽  
Inlet Temperature ◽  
Maximum Output ◽  
Operation Condition ◽  
Gas Turbine Power Plant

A detailed parametric analysis was performed on entire performance cycle model of micro gas turbine power plant. The parametric analysis was studied using Russian Software named ASTRA. Evaluation of parameters on both design and operation condition was performed. The parameters focused here are power output, compression work, specific fuel consumption and thermal efficiency. Various stages such as use of Intercooler, Pre-heater and their optimal influence on thermodynamics were performed. The task was to optimize the maximum output in free turbine power by simulating various cycles of compressor pressure ratios for centrifugal compressor, ambient temperature in various altitude; air-fuel mix ratio and turbine inlet temperature. The results are analysed and presented in this article, the Analysis known as on-design analysis. The compressor uses 66% of turbine work output. The research analysis focuses on reducing the use of power output by compressor and maximizes the power output by free turbine. The results could be summarized as increase in gas turbine thermal efficiency does not always improve the gas turbine efficiency. Optimum power increase of up to 3% was improved and improvement in fuel efficiency improved about 4%.

ANALYSIS OF THERMAL EFFICIENCY OF OPEN CYCLE GAS TURBINE POWER PLANT AT PUTRAJAYA (MALAYSIA)

2015 ◽  
Vol 76 (5) ◽  
Author(s):  
Alhassan Salami Tijani ◽  
Mohd Rashid Halim
Keyword(s):  
Power Plant ◽  
Gas Turbine ◽  
Thermal Efficiency ◽  
Pressure Ratio ◽  
Inlet Temperature ◽  
Compressor Inlet ◽  
Current Cycle ◽  
Open Cycle ◽  
Gas Turbine Power Plant ◽  
Regenerative Cycle

The purpose of this paper is to study the performance of an existing open cycle gas turbine power plant at Putrajaya power station. At compressor inlet temperature of 298.90K, thermal efficiency of 31 % was observed for the existing or current cycle whiles the modified configuration yielded thermal efficiency of 45 %, this result in 14 % increase in thermal efficiency. At pressure ratio of 3.67, thermal efficiency of about 31.06% and 44% was recorded for the current cycle and regenerative cycle respectively. The efficiency of both cycles increase considerably with increase in pressure ratio, but at pressure ratio of about 7, only a small increase in efficiency for both cycles was observed. The optimum value of the efficiencies for both cycles that correspond to pressure ratio of 7 is 43.06 and 56% for the current cycle and the regenerative cycle respectively.

scholarly journals Highly Efficient Automated Control for an MGR Gas Turbine Power Plant

1991 ◽  
Author(s):  
X. L. Yan ◽  
L. M. Lidsky
Keyword(s):  
Control System ◽  
Power Plant ◽  
Gas Turbine ◽  
Power Output ◽  
Reactor Power ◽  
Outlet Temperature ◽  
Automated Control ◽  
Thermal Transients ◽  
Highly Efficient ◽  
Gas Turbine Power Plant

A control system design for the Modular High Temperature Gas-Cooled Reactor Gas Turbine power plant (MGR-GT) is presented. The control system is designed to provide full-scale automated control functions for power output regulation and plant protection in accordance with utility requirements for modular nuclear power plants. Control of the plant power output is based on a unique integration of inventory control and bypass control, which not only enables required load following capabilities but also offers 45% electric generating efficiency over the power ranges from 100% to 50% of the rated level. The reactor power is controlled based on the strategy of maintaining constant core outlet temperature. This approach minimizes the occurrence of thermal transients and temperature redistribution in the core during reactor power changes. In addition, the control system also provides emergency protective control to protect the plant components and to mitigate the likelihood of bounding safety events in case of severe accidents. The operation of the control system is automated by controllers implemented based on the state-space feedback control methodology. A spectrum of transients in both normal and far-off normal conditions has been simulated to evaluate the operability of the plant. The simulation results for a few selected events will be described. The design demonstrates that the MGR-GT is a highly efficient and robust controllable power plant.

Study of an External Fired Gas Turbine Power Plant Fed by Solid Fuel

2000 ◽  
Author(s):  
G. Riccio ◽  
F. Martelli ◽  
S. Maltagliati
Keyword(s):  
Power Plant ◽  
Gas Turbine ◽  
Solid Fuel ◽  
Pressure Ratio ◽  
Plant Performance ◽  
Current Application ◽  
Solid Fuel Combustion ◽  
Technical Discussion ◽  
External Combustion ◽  
Gas Turbine Power Plant

The study of a gas turbine plant fed by solid fuel is discussed in this paper. The plant presented is a small one, 3 MWel, externally fired by the combustion of solid biomass. The aim of the technical discussion is to find both the energetic optimisation and the actual feasibility of the plant through available industrial components (gas turbine, heat exchanger, biomass combustor). The final optimal configuration found in the present study allows for a mix of internal (gas) and external (solid fuel) combustion. In this way higher maximum cycle temperature than in standard biomasss combustors are reached through a small addition of gaseous or liquid fuel. The technical study is based on an optimum size and configuration of the power plant, previously defined, with respect to the performance and the complexity of the plant, and in comparison with other energy conversion processes of biomass such as pyrolysis or gasification. A sensitivity analysis permits the determination an optimal gas turbine in terms of pressure ratio and TIT for the current application and indicates the most important parameters that affect the power plant performance, i.e. the components on which the performance of the plant may depend. Economic data show that the direct external combustion of solid fuel has a more favourable trade-off than the configuration of the plant with gasifier.

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