PERFORMANCE EVALUATION OF AFYON GEOTHERMAL POWER PLANT WITH LOW GRADE ENERGY SOURCES

Abstract

Exergoeconomic performance evaluation of 2700 kW binary cycle design geothermal power
plant in western Turkey is conducted using actual plant operating data, and potential improvements are
identified. Afyon Geothermal Power Plant is thermodynamically modeled in a computer environment
using current working parameters in a comprehensive way for the use of geothermal energy in electricity
generation. To simulate the plant during thermodynamic conditions with exergoeconomic analysis, the
Engineering Equation Solver (EES) software is used. Geothermal water temperature and mass flow rate
of the plant are 110°C, and 150 kg/s, respectively. Energy and exergy efficiencies of the plant are calculated
as 10.4%, and 29.7%. The potential annual revenue of geothermal electricity is calculated to be 2,880,277
$/yr. The exergetic cost of the electricity from the plant is calculated as 0.0233 $/kWh, respectively.

Keywords

• Geothermal power plant
• thermodynamic analysis
• exergoeconomic analysis

Düşük Enerji Seviyeli Kaynakla Çalışan Afyon Jeotermal Güç Santralinin Performans Değerlendirilmesi

Öz

Türkiye'nin batısındaki 2700 kW'lık binary jeotermal santralinin termoekonomik performans değerlendirmesi
ve mevcut işletme verileri kullanılarak gerçekleştirilmiş ve potansiyel iyileştirmeler tespit edilmiştir.
Afyon Jeotermal Santrali, elektrik üretiminde jeotermal enerjinin kullanımı için mevcut çalışma
parametrelerini kapsamlı bir şekilde kullanarak bilgisayar ortamında termodinamik olarak modellenmiştir.
Santralin modellenmesinde termodinamik koşullar altında ekergoekonomik analiz için Mühendislik
Denklem Çözme (EES) yazılımı kullanılmıştır. Jeotermal suyun sıcaklığı ve kütlesel debisi sırasıyla 110°C
ve 150 kg/s'dir. Santralin enerji ve ekserji verimliliği %10.4 ve %29.7 olarak hesaplanmıştır. Yıllık ortalama
jeotermal elektrik geliri 2,880,277 $/yıl olarak hesaplanmaktadır. Santralden üretilen elektriğin ekserjetik
maliyeti ise 0.0233 $/kWh olarak hesaplanmaktadır.

Anahtar Kelimeler

• Jeotermal enerji santrali
• termodinamik analiz
• eksergoekonomik analiz

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