Wyniki wyszukiwania - BazTech

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Multiple approach to analysis of H2O injection into a gas turbine

Ziółkowski P., Badur J., Jesionek K., Chrzczonowski A.

Journal of Power Technologies

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2016

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Vol. 96, nr 3

200--205

EN

This paper presents a thermodynamic analysis of the Brayton cycle and an upgrade to it involving the injection of H2O into the gas turbine cycle. Upgrades are generally considered to be environmentally-friendly solutions and lead to an increase in efficiency, but in the literature there is no clear answer as to what type of upgrade is the best. Computational Flow Mechanics codes have been used for numerical analysis of: the Brayton simple cycle, the Brayton cycle with water injection into the compressor and with regeneration prior to the combustion chamber, the STIG (steam injection gas turbine), and the CSTIG (combined steam injection gas turbine) system. Different ways of analyzing H2O injection into the gas turbine cycle are discussed.

2

Enhancement of the Brayton cycle efficiency by water or steam utilization

Jesionek K., Chrzczonowski A., Ziółkowski P., Badur J.

Transactions of the Institute of Fluid-Flow Machinery

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2012

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nr 124

93--109

EN

In the paper, thermodynamic analysis of two modifications of the Brayton cycle into enhancement cycles with water or steam injection are discussed. The first one deals with a water injected gas turbine modified system with both interstage compressed air cooling and air heating (heat regeneration) before combustion chamber. The second one, mainly devoted to higher steam to air ratio, is connected with separate steam production in the heat recovery steam generator. Hence, steam utilization for the gas turbine propulsion in the Cheng cycle has been analysed. The analysis has been based on the computational flow mechanics (CFM) models of these advanced humidified systems, thanks to which, the influence of the main thermodynamic and design parameters have been examined.

3

Power augmentation of PGE Gorzow’s gas turbine by steam injection – thermodynamic overview

Ziółkowski P., Lemański M., Badur J., Nastałek L.

Rynek Energii

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2012

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Nr 1

161--167

EN

The impact of steam injection upon a gas turbine and a combined power plant performance has been investigated. This article describes and summarizes possibilities of modification for current gas turbine in PGE Gorzow power plant into the Cheng cycle. Our modification deals with a thermal cycle, in which steam produced in a heat recovery steam generator is injected into the gas turbine’s combustion chamber. It has been proved that an increase of the mass flow rate of the expanded exhaust gases causes an increase in both the power and efficiency of gas turbine. Steam injection also helps to reduce NOx formation and is profitable from a thermodynamic, economic and ecological standpoint. The numerical analysis of thermal cycles, before and after the modification, has been carried out by means of an in-house COM-GAS code and Aspen Plus commercial package.

PL

W artykule zbadano wpływ wtrysk pary wodnej na wydajność turbiny gazowej i obiegu gazowo-parowego. Artykuł opisuje i podsumowuje możliwości zmodyfikowania turbiny gazowej elektrociepłowni PGE Gorzów do obiegu Chenga. Modyfikacja związana jest z obiegiem cieplnym, w którym produkowana para w kotle utylizacyjnym wtryskiwana jest do komory spalania turbiny gazowej. Udowodniono, że wzrost strumienia masy ekspandujących spalin powoduje wzrost mocy i sprawności turbiny gazowej. Dodatkowo, wtrysk pary wodnej powoduje obniżenie tlenków azotu NOx i z punktu widzenia termodynamicznego, ekonomicznego i ekologicznego jest zabiegiem korzystnym. Obliczenia numeryczne obiegu cieplnego przed i po modyfikacji wykonano za pomocą własnego kodu COM – GAS oraz komercyjnego programu Aspen Plus.