Yıl 2020, Cilt 4 , Sayı 1, Sayfalar 22 - 32 2020-03-13

Karbondioksitli Kaskad Soğutma Sistemlerinin Enerji Performans Değerlendirilmesi
Energy Performance Assessment of CO2 Cascade Refrigeration Systems

Tuğba KOVACI [1]


Bu çalışmada, R744 + R717 / R1234ze / R134a / R152a soğutkanları kullanılan dört farklı kaskad sisteminin karşılaştırılması sunulmuştur. Analiz -45°C’den -20°C’ye değişen farklı evaporatör sıcaklıklarında ve 30°C’den 50°C’ye değişen farklı kondenser sıcaklıklarında gerçekleştirilmiştir. Evaporatör sıcaklığı 25°C arttırıldığında, tüm sistemin soğutma performansı (COPSYS) değeri yaklaşık %60 ila %64 arasında artmış ve kompresör gücü de yaklaşık %38 oranında azalmıştır. Kondenser sıcaklığının 20°C arttırılması, COPSYS'de %29 34 oranında bir azalmaya ve kompresör gücünde yaklaşık %38-50 oranında bir artışa neden olmuştur. Sonuçlara göre, düşük küresel ısınma potansiyeli (GWP) ve yüksek soğutma performansı değerine sahip olan R744/R717 soğutucu akışkanları kullanılan "sistem 1" kombinasyonunun, incelenen diğer kaskad soğutma sistemlerinden daha verimli olduğunu belirlenmiştir. 

In this study, a comparison of the four different cascade systems using R744+R717/R1234ze/R134a/R152a refrigerant pairs has been presented. The analysis has been performed for different evaporator temperatures ranged from -45 up to -20°C, and different condenser temperatures ranged from 30 up to 50°C. When the evaporator temperature has been increased by 25°C, the system cooling performance (COPSYS) value has increased by about 60% to 64%, and the compressor work has decreased by about 38%. Increasing the condenser temperature by 20°C has resulted in a decrease in COPSYS of 29-34% and an increase in compressor work by about 38% to 50%. According to the results, the combination of “system 1” using R744/R717 refrigerants which having low GWP and high cooling performance has been determined more efficient than other examined cascade refrigeration systems. 

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Orcid: 0000-0002-0974-1660
Yazar: Tuğba KOVACI (Sorumlu Yazar)
Kurum: SÜLEYMAN DEMİREL ÜNİVERSİTESİ
Ülke: Turkey


Tarihler

Yayımlanma Tarihi : 13 Mart 2020

APA KOVACI, T . (2020). Karbondioksitli Kaskad Soğutma Sistemlerinin Enerji Performans Değerlendirilmesi. Mehmet Akif Ersoy Üniversitesi Uygulamalı Bilimler Dergisi , 4 (1) , 22-32 . DOI: 10.31200/makuubd.669252