Akım ortamına yerleştirilen kanatçıkların ısı transferi ve ekserji kaybına etkisinin araştırılması

Bu çalışmada; 62mm genişliğinde 1200 mm uzunluğunda ebatlara sahip galvanizli sac üzerine değişik çap ve aralıklarda kesilen dirençlere farklı açılar verilerek akım ortamına yerleştirilmiştir. Bu türbülatörler sabit ısı akısı uygulanan bir bakır boru içerisine yerleştirilerek ısı transferi ve ekserji kaybı üzerindeki etkisi araştırılmıştır. Çalışma akışkanı olarak hava seçilmiştir. Altı farklı kütlesel debide, Reynolds sayısının 10000 ila 40000 aralığında deneyler yapılmıştır. Deneysel sonuçlarda elde edilen değerler hem Nusselt sayısına hem de ekserji kaybına göre karşılaştırılmıştır.

Investigation of effect on heat transfer and exergy loss of fins placed in flow area

In this study, galvanized plates with dimensions of 62x1200mm, on which cut fins in different diameter and distance, were placed in the flow area. The effect of these turbulators on the heat transfer and exergy loss was investigated by placing in a copper pipe having constant heat flux. Air was used as a working fluid. The experiments were performed for 6 mass flow rates, Reynolds number changed between 10000 and 40000. The results obtained by experiments were compared to both Nusselt number and exergy loss.

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