İki Aşamalı Organik Rankine Çevriminde Farklı Soğutucu Akışkan Kullanımının Sistem Performansına Etkisi

Year 2021, Volume: 36 Issue: 3, 669 - 679, 30.09.2021

Ahmet Kaplan Arif Özbek

https://doi.org/10.21605/cukurovaumfd.1005357

Cited By: 1

Abstract

Bu çalışmada mühendislik denklem çözücü program (Engineering Equation Solver - EES) kullanılarak iki kademeli bir Organik Rankine Çevriminin (ORC) enerji analizi yapılmıştır. Birinci ve ikinci kademelerde sekiz farklı organik akışkan (R134a, R410a, RC318, R407c, R22, R23, R116 ve R218) çiftler halinde belirli sıcaklık limitleri arasında kullanılmıştır. ORC’nin yüksek ısıl verim ve net iş çıktısı için uygun bir soğutucu akışkan veya soğutucu akışkan çifti seçimi yapmak çok önemlidir. Bu çalışmanın amacı, çevrim akışkanının sistem verimine etkisini belirlemek ve en uygun akışkan çiftini bulmaktır. Sonuçlar, en yüksek net güç çıkışının ve en yüksek termal verimin R23+R23 çiftinden elde edildiğini göstermektedir. Ayrıca en düşük net güç çıkışının RC318+RC318 çiftinden ve en düşük termal verimin ise R218+R218 çiftinden elde edildiği gözlemlenmiştir

Keywords

Organik rankine çevrimi, İki aşamalı çevrim, Güneş enerjisi

The Effect of Using Different Refrigerants on System Performance in Two-Stage Organic Rankine Cycle

Abstract

In this study, energy analysis of a double-stage Organic Rankine Cycle (ORC) was performed using the Engineering Equation Solver program (EES). In the first and second stages, eight different organic working fluids (R134a, R410a, RC318, R407c, R22, R23, R116, and R218) were used in pairs for certain temperature limits. Choosing a suitable refrigerant or refrigerant pair is crucial for the ORC’s high thermal efficiency and net work output value. This study aims to determine the effect of working fluid on system efficiency and find out the most suitable working fluid pair. The results showed that the highest net power output and the highest thermal efficiency were obtained from the R23+R23 pair. It was also observed that the lowest net power output from the RC318+RC318 pair and the lowest thermal efficiency was obtained from the R218+R218 pair.

Keywords

Organic rankine cycle, Double stage cycle, Solar power

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