Gas Turbine Performance Articles
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Inlet Cooling for Gas Turbines Driving Gas Gathering Compressors - Case study
Increasing Incremental Gas Flow – Pemex TURBINES LOSE EFFICIENCY AS TEMPERATURES RISE As temperatures rise, your compressor’s performance suffers, resulting in lost time and decreased production, ultimately affecting your bottom line. We’ve developed an inlet cooling process that increases horsepower density and improves production by up to 25 percent, no matter the ...
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Renewable Energy Systems - Case Study
Overview Generating renewable electricity is an important way to reduce carbon dioxide (CO2) emissions and many countries are installing wind and solar power plants to help meet targets for cutting CO2. One drawback of these energy sources is their variability: the wind tends to blow intermittently and solar power is only available during the daytime. Hence renewable power plants either have to ...
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More Power & Efficiency on a 7FA in the Middle East at 50°C Case Study
Powerphase collaborated with the Tamimi Group of Companies and Saudi Electricity Company (SEC) to demonstrate Turbophase system’s ability to boost F-class gas turbine (GT) power output at the high ambient air temperatures that Saudi Arabian summers are known for. Besides having hot summers, Saudi Arabian labor costs are high such that any technology that reduces plant downtime can help ...
By Powerphase
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Thermodynamic analysis of an integrated gasification combined cycle power plant: effect of nitrogen supply on system performance
A comprehensive thermodynamic analysis of a conceptual integrated coal gasification combined cycle power plant is presented. Energy and exergy efficiencies and exergy destructions of each sub–unit are calculated. The effect of nitrogen, which is supplied from the Air Separation Unit (ASU) of the gasification unit to the combustion chamber of the gas turbine (GT) cycle, on system performance is ...
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Understanding and improving energy conversion systems with the aid of exergy–based methods
Exergy–based methods are powerful tools for developing, evaluating and improving an energy conversion system. Conventional exergy–based analyses have limitations, which are significantly reduced by the so–called advanced analyses. The latter evaluate: (a) the interactions among components of the overall system, and (b) the real potential for improving a system component. The main objective of ...
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Effects of thermodynamic and mechanical irreversibilities on gas turbine performance enhancement by intake air cooling
A mathematical model for an existing gas turbine unit in Bahrain another model for intake Air Cooling Gas Turbine (ACIGT) with irreversibility's and variable specific heats were derived in dimensionless form. The maximum net power output and corresponding thermal efficiency were obtained using graphical visualisation and numerical calculation. Results showed an increases of 30% in output power ...
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Risk-based maintenance of gas expansion turbines in steel plant
Unexpected failures, loss of production, higher maintenance costs and down time associated with the failures of equipment are major problems in any plant. Adopting the risk-based maintenance (RBM) approach helps in designing an alternative strategy to minimise the loss resulting from these breakdowns or failures. The methodology consists of four modules: system definition, risk assessment, risk ...
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Comparative study of steam injection effects on operation of gas turbine cycles
In the present work, gas turbine cycles are modified with steam injection between the combustion chamber exit and the gas turbine inlet. Heat recovery steam generators, utilising the exhaust gases, provide these cycles with the injected steam at saturated vapour. The irreversibility of the different composing units of the cycles and the variation of gas properties owing to steam injection as well ...
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Gas turbine performance enhancement by intake air cooling
In this work, the influence of air cooling intake on the gas turbine performance is presented. The proposed system, together with the gas turbine, is described. A mathematical model of ACIGT (Air Cooling Intake Gas Turbine) is derived and formulated in dimensionless form from which the constraint multivariable optimisation problem was formulated. To demonstrate the effectiveness of the proposed ...
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Performance of externally fired combined cycle (EFCC)
The externally fired combined cycle (EFCC) which utilises coal as the primary fuel through a gas turbine cycle is a clean coal technology. Natural gas is used as the supplementary fuel, but the ultimate goal of the EFCC concept is a coal only option. In this study, the performance of the EFCC plant is evaluated based on the first and the second laws of thermodynamics, considering various levels ...
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Enhancing the dynamic performance of electricity production in steam power plants by the integration of transient waste heat sources into the feed-water pre-heating system
Since the deregulation of the energy market the enhancement of steam power plant's dynamic performance has become more and more important. Nowadays, peak load is a profitable product at the energy stock markets if it can be provided reliably. This is in contrast to many power plants running constantly at full load. A very promising technique to improve the peak load capability of such power ...
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