Wyniki wyszukiwania - BazTech

1

Gas turbine selection for feedwater repowering

Wołowicz M., Badyda K.

Journal of Power Technologies

|

2015

|

Vol. 95, nr 4

302--308

EN

The paper presents the concept of using hot exhaust gases from gas turbines with different power output to heat up feedwater in a supercritical power plant unit. The gas turbine is connected to the system, bypassing a high pressure regenerative heat exchanger. The benefits of this solution are discussed and the factors to be taken into account are listed. The criteria to be met by the gas turbine to ensure safe and optimal connection to the steam system are discussed. A reference unit model with 800 MW electric power (an existing super-critical power unit in Poland - Belchatow II) was created and presented in a previous paper by the same authors. This model was later supplemented with a gas turbine (three different models with different levels of power production are taken into consideration). The system with a gas turbine enjoys greater power and efficiency over the steam cycle alone. The power increase is due to the extra power generated by the gas turbine and the higher output of the steam system caused by increasing the steam flow through the turbine (closed extraction to the "bypassed" high-pressure heat exchanger). System power is changed linearly with the steam flow and reaches the nominal point 40..50% higher than without an added gas turbine (depending on gas turbine power and efficiency). The efficiency characteristics of the whole system are flatter, with higher values.

2

Feedwater repowering of 800 MW supercritical steam power plant

Wołowicz M., Milewski J., Badyda K.

Journal of Power Technologies

|

2012

|

Vol. 92, nr 2

127--134

EN

The paper presents concept of using hot exhaust gases from the gas turbine to heat up feedwater in supercritical power plant unit. The benefits of such solution are discussed and the factors to be taken into account are listed. Details are discussed criteria to be met by gas turbine, in order to be safely and optimally connected to the steam system. Reference unit model with 800 MW electric power was created, which was later supplemented with a gas turbine. The system with gas turbine in relation to “clean” steam system has greater power and efficiency. The power increase is due to the extra power generated by gas turbine and steam system higher output by increasing amount of steam flow through the turbine (closed extraction to "bypassed" high-pressure heat exchanger).

3

Analiza zastosowania zrzutu spalin z turbiny gazowej do układu regeneracji siłowni parowej

Milewski J., Wołowicz M., Badyda K., Iwański Z.

Rynek Energii

|

2011

|

nr 3

26-32

PL

Przedstawiono koncepcję wykorzystania gorących spalin z turbiny gazowej do regeneracji wody zasilającej blok parowy. Omówiono korzyści z takiego rozwiązania oraz wymieniono czynniki jakie należy brać pod uwagę. Szczegółowo omówiono kryteria, jakie powinna spełniać turbina gazowa, aby można było ją bezpiecznie i optymalnie podłączyć do układu parowego. Powstał model bloku referencyjnego o mocy 800 MW, który został później uzupełniony o turbinę ga-zową. Układ z turbiną gazową w stosunku do układu czysto parowego ma większą moc oraz sprawność. Przyrost mocy spowodowany jest dodatkową mocą generowaną przez turbinę gazową oraz wyższą mocą układu parowego poprzez zwiększenie ilości przepływu pary przez turbinę (zamknięty upust do "ominiętego" wymiennika regeneracji wysokoprężnej).

EN

The conception of the use of hot exhaust gases from the gas turbine to regenerate feedwater of steam turbine power plant is presented. Discusses the benefits of such measures, and these are the factors to be taken into account. Were discussed in detail the criteria to be met by gas turbine, that it could be safely and optimally connected to the steam cycle. Reference block model with power of 800 MW was created, which was later supplemented by the gas turbine. The repowered system has greater power and efficiency. The power increase is due to the additional power generated by gas turbine and steam turbine by increasing the flow of steam through a turbine (closed extraction to "bypassed" heat exchanger regeneration).