HCFC-22 YERİNE KULLANILAN BAZI HFC'LERİN ÇEVRESEL ETKİLERİNİN DENEYSEL OLARAK KARŞILAŞTIRILMASI

Bu çalışmada, HCFC-22 gazı yerine ozon tabakasına zarar vermeyen R417A ve R424A soğutucu akışkanlarının TEWI değerleri hesaplanıp, mukayese edilmiştir. Bir split klima cihazı için, ortalama 38?C çevre sıcaklığında, üç farklı soğutucunun tükettiği enerji miktarları deneysel olarak tespit edilmiştir. Soğutma ihtiyacı olan Mayıs-Eylül döneminde belli çalışma saatleri için yıllık enerji tüketimi hesaplanmıştır. Hesaplamalar sonucunda, GWP değeri yüksek olan R424A'nın doğrudan etkisi de yüksek olmuştur. R424A ve R417A'nın enerji tüketimleri R22'den %10 düşük olmasına rağmen, GWP değerlerinin yüksek olması sebebiyle, TEWI değerlerinin %2 -%4 oranında yüksek çıktığı tespit edilmiştir.

THE EXPERIMENTAL COMPARISON OF ENVIRONMENTAL IMPACTS OF SOME HFC'S USED INSTEAD OF HCFC-22

In this study, the TEWI values for R417A and R424A refrigerants instead of HCFC-22 gas which don't deplete ozone layer were calculated and then compared. For a split type air conditioning equipment, the energy consumption amounts were experimentally determined for the three different refrigerants at an average ambient temperature of 38?C. The annual energy consumption that is the cooling requirement was evaluated for the specific operating hours in May-September period. As a result of calculations, direct impact of R424A with the higher GWP value was also higher. It was found that although energy consumptions for both R424A and R417A were less than that for R22 by 10%, their TEWI values were to be higher with 2 to 4% because of their greater GWP magnitudes.

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