First- and second-law thermodynamic analyses of a combined natural gas cycle  power plant: Sankey and Grossman diagrams

Mehmet Onur KARAAĞAÇ; Ahmet KABUL; Hasan OĞUL

Makale detayları

First- and second-law thermodynamic analyses of a combined natural gas cycle power plant: Sankey and Grossman diagrams

Yazarlar:

Mehmet Onur KARAAĞAÇ | Ahmet KABUL | Hasan OĞUL

Yayıncı:

TUBITAK

Dergi:

Turkish Journal of Physics 2019 Vol.43 Issue 1, pp.93-108

Belge Tipi:

Makale

Yayın Tarihi:

1/2019

Belge Dili:

Türkçe

Document ID (Org No.):

2000759112

Sıklık:

İki Aylık

eISSN:

1303-6122

pISSN:

1300-0101

Özet:

 

The natural gas combined cycle power plant is one of the best options for generating electricity due to its  use of low carbon fuels, high efficiency, and operational flexibility. These plants consist of a combination of Brayton  and Rankine cycles, and investigation of these cycles is performed in this paper. Here the parameters of pressure and  temperature used in the calculations are taken from a combined cycle power plant. The net power output of the system  at 25 °C ambient temperature and 101.325 kPa pressure was calculated as 45 and 12 MW for Brayton and Rankine cycles,  respectively. In addition, Brayton, Rankine, and combined cycle efficiencies were calculated as 37.5%, 27%, and 47.5%,  while the exergy efficiencies were determined as 36%, 44%, and 46%, respectively. In the system elements, the most  energy was lost in the combustion chamber and the highest exergy efficiency was achieved in the compressor at 95% level.  Impacts of an increase in ambient temperature, compressor pressure ratio, and change on turbine inlet temperature were  further investigated. Energy (Sankey) and exergy (Grossman) flow diagrams were further drawn based on the analyses  obtained from the combined cycle power plants.

Makale detayları

First- and second-law thermodynamic analyses of a combined natural gas cycle power plant: Sankey and Grossman diagrams

Yazarlar: Mehmet Onur KARAAĞAÇ | Ahmet KABUL | Hasan OĞUL

Yayıncı: TUBITAK

Dergi: Turkish Journal of Physics 2019 Vol.43 Issue 1, pp.93-108

Belge Tipi: Makale

Yayın Tarihi: 1/2019

Belge Dili: Türkçe

Document ID (Org No.): 2000759112

Sıklık: İki Aylık

eISSN: 1303-6122

pISSN: 1300-0101

Sayı

Yazarlar:

Mehmet Onur KARAAĞAÇ | Ahmet KABUL | Hasan OĞUL

Yayıncı:

TUBITAK

Dergi:

Turkish Journal of Physics 2019 Vol.43 Issue 1, pp.93-108

Belge Tipi:

Makale

Yayın Tarihi:

1/2019

Belge Dili:

Türkçe

Document ID (Org No.):

2000759112

Sıklık:

İki Aylık

eISSN:

1303-6122

pISSN:

1300-0101