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Journals / El-Cezeri / 2026 / Cilt: 9 Sayı: 1

Energy and Exergy Analysis of Transcritical Carbon Dioxide Refrigeration Cycle

Bayram Kılıç(BURDUR MEHMET AKİF ERSOY UNIVERSITY)0000-0002-8577-1845
Journal
El-Cezeri
Pages
290–299
Publication Date
2022-01-31
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AI Summary & Key Takeaways

AI Insight
⚡ TL;DR(Too Long; Didn't Read)

When the evaporator temperature is -5 oC and the outlet temperature from the gas cooler is 20 oC, the highest exergy efficiency value was determined as 41.19 in this study.

📌 3 Key Takeaways

🎯
Objective & Hypothesis:The effects of conventional refrigerants on ozone layer and its effect on global warming are known.
📊
Key Findings & Data:Refrigerants based on chlorofluorocarbons (CFC) and hydrochlorofluorocarbons (HCFCs) have been used in refrigeration systems for a long time and are still being used.
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Conclusion & Impact:When the evaporator temperature is -5 oC and the outlet temperature from the gas cooler is 20 oC, the highest exergy efficiency value was determined as 41.19 in this study.
🔬Design:Araştırma Makalesi
📍Scope:Comprehensive Sample
⚙️Variables:karbondioksit · ekserji analizi · transkritik çevrim

Abstract

The effects of conventional refrigerants on ozone layer and its effect on global warming are known. Refrigerants based on chlorofluorocarbons (CFC) and hydrochlorofluorocarbons (HCFCs) have been used in refrigeration systems for a long time and are still being used. Instead of these refrigerants, the use of natural refrigerants which are much less harmful to the environment, has been given importance. Carbon dioxide is the first that comes to mind among these fluids. In this study, energy and exergy analysis of transcritical carbon dioxide refrigeration cycle examined as theoretically. Energy and exergy analysis were made for different evaporator temperatures and outlet temperatures from gas cooler. Exergy losses of each component of the transcritical carbon dioxide refrigeration cycle were determined. In addition, the first and second law efficiencies of the refrigeration cycle were determined. When the evaporator temperature is -5 oC and the outlet temperature from the gas cooler is 20 oC, the highest exergy efficiency value was determined as 41.19 in this study.

Özet

Konvansiyonel soğutucu akışkanların ozon tabakası üzerindeki etkileri ve küresel ısınmaya etkisi bilinmektedir. Kloroflorokarbon (CFC) ve hidrokloroflorokarbon (HCFC) bazlı soğutucular, soğutma sistemlerinde uzun süredir kullanılmaktadır. Bu soğutucu akışkanların yerine çevreye çok daha az zararlı olan doğal soğutucu akışkanların kullanımına önem verilmiştir. Bu akışkanlar arasında ilk akla gelen karbondioksittir. Bu çalışmada, transkritik karbondioksit soğutma çevriminin enerji ve ekserji analizi teorik olarak incelenmiştir. Evaporatör ve gaz soğutucu çıkış sıcaklıkları için enerji ve ekserji analizleri yapılmıştır. Transkritik karbondioksit soğutma çevriminin her bir bileşeninin ekserji kayıpları belirlenmiştir. Ayrıca soğutma çevriminin birinci ve ikinci kanun verimleri belirlenmiştir. Bu çalışmada en yüksek ekserji verim değeri, evaporatör sıcaklığı -5 oC ve gaz soğutucu çıkış sıcaklığı 20 oC için 41.19 olarak belirlenmiştir.

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Cite This Article

Kılıç, B. (2022). Energy and Exergy Analysis of Transcritical Carbon Dioxide Refrigeration Cycle. El-Cezeri, Cilt: 9 Sayı: 1, 290–299. https://doi.org/10.31202/ecjse.972623

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