Gas Turbine Performance Test

Boyce, Meherwan P.

doi:10.1016/b978-075067846-9/50023-7

Cited by 22 publications

(37 citation statements)

References 2 publications

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“…Boyce 5 reported that 12% of major failures in gas turbines less than 170 MW and 35% of major failures in gas turbines more than 220 MW are due to compressor section. Bousser et al.…”

Section: Introductionmentioning

confidence: 99%

Representative volume element-based simulation of multiple solid particles erosion of a compressor blade considering temperature effect

Mohammadi

Khoddami

2019

Proceedings of the Institution of Mechanical Engineers, Part J:

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Solid particle erosion is one of the main failure mechanisms of a compressor blade. Thus, characterization of this damage mode is very important in life assessment of the compressor. Since experimental study of solid particle erosion needs special methods and equipment, it is necessary to develop erosion computer models. This study presents a coupled temperature–displacement finite element model to investigate damage of a compressor blade due to multiple solid particles erosion. To decrease the computational cost, a representative volume element technique is introduced to simulate simultaneous impact of multiple particles. Blade has been made of Ti-6Al-4V, a ductile titanium-based alloy, which is impacted by alumina particles. Erosion finite element modeling is assumed as a micro-scale impact problem and Johnson–Cook constitutive equations are used to describe Ti-6Al-4V erosive behavior. In regard to a wide variation range in thermal conditions all over the compressor, it is divided into three parts (first stages, middle stages, and last stages) in which each part has an average temperature. Effective parameters on erosive behavior of the blade alloy, such as impact angle, particles velocity, and particles size are studied in these three temperatures. Results show that middle stages are the most critical sites of the compressor in terms of erosion damage. An exponential relation is observed between erosion rate and particles velocity. The dependency of erosion rate on size of particles at high temperatures is indispensable.

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“…Boyce 5 reported that 12% of major failures in gas turbines less than 170 MW and 35% of major failures in gas turbines more than 220 MW are due to compressor section. Bousser et al.…”

Section: Introductionmentioning

confidence: 99%

Representative volume element-based simulation of multiple solid particles erosion of a compressor blade considering temperature effect

Mohammadi

Khoddami

2019

Proceedings of the Institution of Mechanical Engineers, Part J:

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“…Two technologies of compressors are mainly used in GT: centrifugal and axial compressors with different operating performances, especially in terms of efficiency and pressure ratio. 24…”

Section: Energetic Analysis Of the Different Gt-system Optionsmentioning

confidence: 99%

“…The number of compressing stages defines the size of the machine, since the higher the maximum cycle pressure, the more the number of compression and expansion stages. 24,26 Compression ratio and isentropic efficiency of π 1 = 4 and η i s C = 80 % , respectively, are selected based on Chrysler GT radial compressor. 1 Literature shows that the relative inlet and outlet pressure drop for an industrial SGT5-4000F GT are, respectively, 0.4% and 1.3%; 16,27 tests done on 28-kW micro-gas turbine (MGT) show a pressure drop at inlet of compressor of 500 Pa at full power.…”

Section: Energetic Analysis Of the Different Gt-system Optionsmentioning

confidence: 99%

Technological analysis and fuel consumption saving potential of different gas turbine thermodynamic configurations for series hybrid electric vehicles

Nader

Cheng²,

Nault

et al. 2019

Proceedings of the Institution of Mechanical Engineers, Part D:

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Gas turbine systems are among potential energy converters to substitute the internal combustion engine as auxiliary power unit in future series hybrid electric vehicle powertrains. Fuel consumption of these auxiliary power units in the series hybrid electric vehicle strongly relies on the energy converter efficiency and power-to-weight ratio as well as on the energy management strategy deployed on-board. This paper presents a technological analysis and investigates the potential of fuel consumption savings of a series hybrid electric vehicle using different gas turbine–system thermodynamic configurations. These include a simple gas turbine, a regenerative gas turbine, an intercooler regenerative gas turbine, and an intercooler regenerative reheat gas turbine. An energetic and technological analysis is conducted to identify the systems’ efficiency and power-to-weight ratio for different operating temperatures. A series hybrid electric vehicle model is developed and the different gas turbine–system configurations are integrated as auxiliary power units. A bi-level optimization method is proposed to optimize the powertrain. It consists of coupling the non-dominated sorting genetic algorithm to the dynamic programming to minimize the fuel consumption and the number of switching ON/OFF of the auxiliary power unit, which impacts its durability. Fuel consumption simulations are performed on the worldwide-harmonized light vehicles test cycle while considering the electric and thermal comfort vehicle energetic needs. Results show that the intercooler regenerative reheat gas turbine–auxiliary power unit presents an improved fuel consumption compared with the other investigated gas turbine systems and a good potential for implementation in series hybrid electric vehicles.

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“…The very hostile gas turbine environment presents unique challenges for instrumentation. The demand for greater efficiency is steadily increasing the temperature and pressure in engines [1,2,3]. The gas turbine output power is increased by 10%, and the efficiency is increased by 1% for every 55.5 °C increase in temperature.…”

Section: Introductionmentioning

confidence: 99%

Dielectrically-Loaded Cylindrical Resonator-Based Wireless Passive High-Temperature Sensor

Xiong

Tan

et al. 2016

Sensors

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The temperature sensor presented in this paper is based on a microwave dielectric resonator, which uses alumina ceramic as a substrate to survive in harsh environments. The resonant frequency of the resonator is determined by the relative permittivity of the alumina ceramic, which monotonically changes with temperature. A rectangular aperture etched on the surface of the resonator works as both an incentive and a coupling device. A broadband slot antenna fed by a coplanar waveguide is utilized as an interrogation antenna to wirelessly detect the sensor signal using a radio-frequency backscattering technique. Theoretical analysis, software simulation, and experiments verified the feasibility of this temperature-sensing system. The sensor was tested in a metal-enclosed environment, which severely interferes with the extraction of the sensor signal. Therefore, frequency-domain compensation was introduced to filter the background noise and improve the signal-to-noise ratio of the sensor signal. The extracted peak frequency was found to monotonically shift from 2.441 to 2.291 GHz when the temperature was varied from 27 to 800 °C, leading to an average absolute sensitivity of 0.19 MHz/°C.

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Gas Turbine Performance Test

Cited by 22 publications

References 2 publications

Representative volume element-based simulation of multiple solid particles erosion of a compressor blade considering temperature effect

Representative volume element-based simulation of multiple solid particles erosion of a compressor blade considering temperature effect

Technological analysis and fuel consumption saving potential of different gas turbine thermodynamic configurations for series hybrid electric vehicles

Dielectrically-Loaded Cylindrical Resonator-Based Wireless Passive High-Temperature Sensor

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