Investigation of Different Working Fluid Effects on Exergy Analysis for Organic Rankine Cycle (ORC)

Öz

In this study, energy and exergy analyses are performed for an Organic Rankine Cycle in a local power

plant that is located southern of Turkey. The Organic Rankine Cycle was used for low temperature heat

source as heat recovery process with various organic working fluids. The examined system consists of an

evaporator, a turbine, a condenser, a pump and a generator as components. The evaluation is carried out

using two different working fluids for each component of the system. The main purpose of this study is to

model the ORC cycle for performance optimization in terms of the usage of two different working fluids

with relevant temperature ranges. HFE7100 and FC72 working fluids are selected as performance

parameters in order to show the effect of the working fluids on the system performance of the Organic

Rankine Cycle.

Anahtar Kelimeler

• Organic rankine cycle,Exergy,Thermodynamic analysis,Heat recovery

Organik Rankine Çevriminde Farklı Soğutucu Akışkanların Ekserji Analizi Üzerine Etkisinin Ġncelenmesi

Öz

Bu çalışmada, Türkiye’nin güneyinde bulunan bir yerel güç santralindeki Organik Rankine Çevrimi için

ekserji analizi yapılmıştır. Organik Rankine Çevrimi, düşük sıcaklıktaki ısı kaynağı için farklı organik

soğutucu akışkanlar ile ısı geri kazanım işlemi olarak kullanılır. İncelenen sistem evaporatör, türbin,

kondenser, pompa ve jeneratör bölümlerinden oluşmaktadır. Değerlendirme, her sistem bileşenine iki

farklı soğutucu akışkan için yapılmıştır. Bu çalışmanın temel amacı, Organik Rankine Çevriminin

performans optimizasyonunu sağlamak üzere iki farklı soğutucu akışkanın ilgili sıcaklık aralıklarında

kullanılarak modellenmesidir. Soğutucu akışkanların Organik Rankine Çevriminin performansı üzerine

etkisini göstermek amacıyla HFE7100 ve FC72 akışkanları performans parametresi olarak seçilmiştir.

Anahtar Kelimeler

• Organik rankine çevrimi,Ekserji,Termodinamik analiz,Isı geri kazanım

Kaynakça

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