YENİ NESİL SOĞUTUCU AKIŞKANLARIN KULLANILDIĞI SOĞUTMA SİSTEMLERİNDE BORU ÇAPININ HESAPLANMASI VE SICAKLIKLA DEĞİŞİMİNİN İNCELENMESİ

Öz

Bu çalışmada, yeni nesil soğutucu akışkanların kullanıldığı soğutma sistemlerinin emme ve basma hatlarında yağlama yağının sürüklenebilmesi için gerekli boru çapı hesaplanarak sıcaklığa göre değişimi incelenmiştir. Çalışmanın ilk aşamasında belirlenen tahmini boru çaplarına göre emme ve basma hattında bulunan borulardaki yağın sürüklenebilmesi için gerekli olan minimum soğutucu akışkan hızı (Vr,min) ve minimum soğutma yükü (qr,min) değerleri hesaplanmış, bu hesaplanan değerler ışığında kullanılması gereken gerçek boru çapları hesaplanmıştır. Analizler, soğutma yükünün 1 kW olduğu bir soğutma sisteminde K ve L tipi bakır borular için ozon tabakasına zarar veren ve küresel ısınmaya yol açan soğutucu akışkanların yerine çevre dostu alternatif akışkanlardan R134A, R410A ve R423A soğutucu akışkanları kullanılmıştır.

Anahtar Kelimeler

• Alternatif soğutucu akışkanlar, Minimum soğutucu akışkan hızı, Minimum soğutma yükü, Boru çapı

THE CALCULATION OF THE PIPE DIAMETER AND CHANGE WITH TEMPERATURE OF VAPOUR COMPRESSION REFRIGERATION SYSTEM USING VARIOUS ALTERNATIVE REFRIGERANTS

Öz

In this paper, the diameter of the pipe necessary for the lubrication oil to be entrained in the sucking and discharge line of the refrigerating systems using various alternative refrigerants calculated, its change range in accordance with temperature has been studied. The values of the minimum velocity of the refrigerant (Vr,min) and the minimum refrigeration load (qr,min) necessary for the oil in the pipes in the suction and discharge lines to be entrained in accordance with the estimated pipe diameters determined at the first stage of this study have been calculated, and the diameters of the pipes to be used in the light of these values have been calculated. In a refrigeration system in which refrigerating load is 1 kw for copper pipes of K and L type, eco-friendly, alternative R134A, R410A and R423A refrigerants in place of refrigerants detrimental to ozone layer and leading to global warming have been used.

Anahtar Kelimeler

• Alternative refrigerants, Minimum velocity of refrigerant, Minimum refrigeration load, Pipe diameter

Kaynakça

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