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COMPARATIVE EXPERIMENTAL EVALUATION ON HEATING PERFORMANCE OF A MOBILE AIR CONDITIONING SYSTEM USING R134A, R1234ZE(E), R152A and R444A

R134A, R1234ZE(E), R152A ve R444A SOĞUTUCU AKIŞKANLARINI KULLANAN BİR MOBİL İKLİMLENDİRME SİSTEMİNİN ISITMA PERFORMANSININ KARŞILAŞTIRMALI DENEYSEL DEĞERLENDİRİLMESİ

Direk

Mehmet

YALOVA UNIVERSITY Yüksel

Fikret

YALOVA UNIVERSITY

04 30 2019

39 1 31 38 09 13 2018 01 23 2019

1977

Journal of Thermal Science and Technology

In this study, the use of R1234ze(E), R152a and R444a as alternative to R134a in a mobile air conditioning(MAC) system are tested. The performance characteristics of R134a, R444a, R1234ze(E) and R152a wereexperimentally examined in a MAC system by changing the air temperatures. Besides, the influence of compressorvolume when the system operates with R1234ze(E) was investigated. The results show that the heating performance ofR152a are higher than those obtained from R134a, R444a, R1234ze(E). Additionally, R1234ze(E) has lowest heatingcapacities among the low GWP refrigerants investigated. The heating performance of R1234ze(E) increased alongwith increasing the total compressor volume. Finally, R444a, R152a and R1234ze(E) can be used as alternative toR134a in MAC systems when the necessary improvements are made.

Bu çalışmada, R134a'ya alternatif olarak R1234ze(E), R152a ve R444a soğutucu akışkanlarının bir mobiliklimlendirme sisteminde kullanımı test edilmiştir. Hava sıcaklıkları değiştirilerek R134a, R444a, R1234ze(E) veR152a'nın performans özellikleri deneysel olarak incelenmiştir. Ayrıca, sistem R1234ze(E) ile çalışırken kompresörhacminin etkisi araştırılmıştır. Sonuçlar, R152a’dan elde edilen ısıtma performansı değerlerinin R134a, R444a veR1234ze(E)'den daha yüksek olduğunu göstermektedir. Ayrıca, R1234ze(E) en düşük ısıtma performansı değerlerinesahiptir. R1234ze(E)’nin ısıtma kapasitesi, toplam kompresör hacminin artmasıyla birlikte artmıştır. Son olarak,R444a, R152a ve R1234ze(E), gerekli iyileştirmeler yapıldığında mobil iklimlendirme sistemlerinde R134a'yaalternatif olarak kullanılabilir.

Mobile air conditioning system R134a R1234ze(E) R152a R444a

Mobil iklimlendirme sistemi R134a R1234ze(E) R152a R444a

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