Gas Turbine Performance Test

Boyce, Meherwan P.

doi:10.1016/b978-0-12-383842-1.00020-2

Cited by 48 publications

(70 citation statements)

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“…Проміжне охолодження циклового повітря ГТУ можливо здійснити, принаймні, двома шляхами [7]: 1) зовнішнім охолодженням, тобто через поверхню теплообміну (рис. 2).…”

Section: результати дослідженняunclassified

“…2) змішуванням циклового повітря з диспергованою водою, тобто упорскування води у вигляді крапель на вході компресора або по його тракту між ступенями. При цьому краплі води, що випаровуються відводять теплоту від повітряного потоку, охолоджуючи його [7]. В ГТУ із зовнішнім проміжним охолодженням повітря, з високою температурою після ступеня або частини ступенів компресора, охолоджується водою у проміжному поверхневому теплообмінникуохолоджувачі та надходить до другої частини компресора (рис.…”

Section: результати дослідженняunclassified

“…Іншим перспективним способом проміжного охолодження циклового повітря є контактне охолодження шляхом розпилення води через форсунки (рис. 4) [4,7,8].…”

Section: кнтunclassified

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Проміжне Охолодження Циклового Повітря В Газотурбінних Установках Аеротермопресорами

Коновалов¹,

Кобалава²

2018

aktt

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Existing technologies to improve the fuel and energy efficiency of gas turbine plants due to intercooling of the cycle air are analyzed. One of the promising ways for increasing the efficiency of such technologies is using thermogasdynamic compression in the heat recovery processes of secondary energy resources. A feature of this process is the pressure rate increase due to the instant evaporation of a finely dispersed liquid is injected into the air stream which accelerated to the speed of sound. When the pressure of the boiling liquid is increased, the power consumption for compressing the working fluid (cyclic air) is reduced, the efficiency is increased and the consumption of the fuel and energy resources of the gas turbine plant is reduced.The advantages of cooling technology with an aerothermopressor are outlined in the article. The aerothermopressor is a multifunctional jet apparatus, whose work consists in injecting water into the stream of cyclic air when it is compressed in the gas turbine plant compressor. If this apparatus is used for cooling of cycle air, it will be compensate for aerodynamic losses along the air path and it will reduce compression work in the compressor, increase the consumption of the working fluid and, as a result, increase the gas turbine plant power. The basic schemes of the aerothermopressor installation between the stages of low and high pressure compressors are considered. Theoretical thermodynamic cycles of such gas turbine plants are presented and the advantage of using a contact cooler for intercooling of the cyclic air in comparison with surface air coolers for intercooling is defined in this paper.The proposed cooling technology makes it possible using low-potential heat of secondary energy resources of gas turbine plants (heat of cyclic air), the utilization of which by traditional methods is problematic because the temperature of waste heat sources is low.The tasks are determined, the solution of which will ensure the possibility of rational organization of cooling processes in the aerothermopressor, which in turn will allow achieving optimal parameters for increasing the efficiency of the gas turbine plant and reducing the specific fuel consumption in relation to the variable climatic conditions of operation

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Section: результати дослідженняunclassified

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Проміжне Охолодження Циклового Повітря В Газотурбінних Установках Аеротермопресорами

Коновалов¹,

Кобалава²

2018

aktt

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“…Real-time sensing and in situ temperature monitoring are critical in improving the working efficiency of devices and ensuring the safe operation of equipment. For example, the excessively high temperature of a furnace wall or pipe wall can lead to its deformation or bursting, which will reduce work efficiency and cause safety risks [ 1 , 2 ]. In a combustion chamber, the combustion temperature directly affects the engine’s working efficiency and output power [ 3 , 4 ].…”

Section: Introductionmentioning

confidence: 99%

A Novel Metamaterial Inspired High-Temperature Microwave Sensor in Harsh Environments

Tan

et al. 2018

Sensors

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A high-temperature sensor based on a metamaterial unit cell is proposed in this paper. The wireless passive temperature sensing method is based on the electromagnetic backscatter principle, and thus has the advantages of higher quality, lower environmental interference, and anti-low frequency interference. We developed a finite-element method-based model for the sensor via high-frequency simulation software (HFSS). A double split-ring resonator (SRR) with an outer ring length of 13 mm was designed on alumina ceramic substrate. The sensor was fabricated at 2.42 GHz using micromechanical technology and screen printing technology. When the temperature increased from 28 to 1100 °C, the resonant frequency decreased from 2.417 to 2.320 GHz with an average sensitivity of 95.63 kHz/°C. As the sensor is easily designed and fabricated, it can be used for chipless radio frequency identification (RFID) tags by simply changing the size of rings. Furthermore, emerging 3D printing technology and commercial desktop inkjet printers will be used to realize the rapid low-cost preparation of the sensor, enabling its wide range of applications in aerospace, military, manufacturing, transportation, and other fields.

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“…In an aeronautics engine, its thermal efficiency is the function of pressure inside the burner, and its maximum thermal efficiency needs optimal pressure. Because the safe operation of the engine is closely correlated to pressure, pressure that exceeds its designed value can lead to a compressor surge, consequent flameout, or even serious damage to components in the combustion chamber [ 3 , 4 ]. However, in the aforementioned applications, extreme high temperatures are encountered frequently.…”

Section: Introductionmentioning

confidence: 99%

Microwave Wire Interrogation Method Mapping Pressure under High Temperatures

et al. 2017

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It is widely accepted that wireless reading for in-situ mapping of pressure under high-temperature environments is the most feasible method, because it is not subject to frequent heterogeneous jointing failures and electrical conduction deteriorating, or even disappearing, under heat load. However, in this article, we successfully demonstrate an in-situ pressure sensor with wire interrogation for high-temperature applications. In this proof-of-concept study of the pressure sensor, we used a microwave resonator as a pressure-sensing component and a microwave transmission line as a pressure characteristic interrogation tunnel. In the sensor, the line and resonator are processed into a monolith, avoiding a heterogeneous jointing failure; further, microwave signal transmission does not depend on electrical conduction, and consequently, the sensor does not suffer from the heat load. We achieve pressure monitoring under 400 °C when employing the sensor simultaneously. Our sensor avoids restrictions that exist in wireless pressure interrogations, such as environmental noise and interference, signal leakage and security, low transfer efficiency, and so on.

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Gas Turbine Performance Test

Cited by 48 publications

References 0 publications

Проміжне Охолодження Циклового Повітря В Газотурбінних Установках Аеротермопресорами

Проміжне Охолодження Циклового Повітря В Газотурбінних Установках Аеротермопресорами

A Novel Metamaterial Inspired High-Temperature Microwave Sensor in Harsh Environments

Microwave Wire Interrogation Method Mapping Pressure under High Temperatures

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