Effect of Different Fluid Types on Cycle Performance in Electricity Generation with Geothermal Energy

Abstract

Geothermal energy is a naturally renewable resource and can produce electricity and heat without harming the environment with less carbon dioxide emissions than fossil fuels. This makes it an environmentally friendly option. Our country is located on an active tectonic belt and has an important position in the world in terms of geothermal energy resources. For this reason, we have a high potential to benefit from geothermal resources. The design of the geothermal energy electricity generation system (turbine, heat exchanger, fluid properties, etc.) also plays a critical role in terms of efficiency. The system should be optimized according to conditions such as temperature and pressure. In this study, electricity production performances were compared for different fluid types in the secondary cycle, turbine efficiency and wellhead temperature in an energy conversion plant using a geothermal fluid with a source temperature of 195 0C.

Keywords

• Geothermal energy
• Electricity production
• Fluid type
• Performance analysis

Jeotermal Enerji ile Elektrik Üretiminde Farklı Akışkan Türlerinin Çevrim Performansına Etkisi

Abstract

Jeotermal enerji, doğal olarak yenilenen bir kaynak olup, fosil yakıtlara göre daha az karbondioksit emisyonu ile çevreye zarar vermeden elektrik ve ısı üretebilir. Bu da onu çevre dostu bir seçenek haline getirmektedir. Ülkemiz, aktif bir tektonik kuşak üzerinde yer almaktadır ve jeotermal enerji kaynakları bakımından dünya genelinde önemli bir konuma sahiptir. Bu sebeple jeotermal kaynaklardan faydalanma potansiyelimiz yüksektir. Jeotermal enerji ile elektrik üretim sistemi (türbin, ısı eşanjörü, akışkan özellikleri vb.) tasarımı da verimlilik açısından kritik bir rol oynamaktadır. Sistem, sıcaklık ve basınç gibi koşullara göre optimize edilmelidir. Bu çalışmada da; 195 0C kaynak sıcaklığı olan bir jeotermal akışkan kullanılan enerji dönüşüm santralinde, ikincil çevrimdeki farklı akışkan tipleri, türbin verimi ve kuyu başı sıcaklığı için elektrik üretim performansları karşılaştırılmıştır.

Keywords

• Jeotermal enerji
• Elektrik üretimi
• Akışkan tipi
• Performans analizi

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