Soğutucu Akışkan Distribütöründe İki Fazlı Akışın Bilgisayarlı Simülasyonu

Öz

Soğutucu akışkan basınç düşümünün düşük seviyede tutulması ve evaporatör girişinde homojen bir dağılımın sağlanması amacıyla distribütördeki akış karakteristiklerinin anlaşılması gerekmektedir. Bu çalışmanın amacı geleneksel olarak kullanılan ve yeni dizayn edilmiş bir soğutucu akışkan distribütöründe iki fazlı akış karakteristiklerinin elde edilmesi ve doğrulanmasıdır. Bu amaçla deneysel veriler kullanılarak bir simülasyon modeli hazırlanmıştır. Distribütördeki iki fazlı akış dağılımının evaporatör performansı üzerindeki etkisi göz önünde bulundurulmuştur. Distribütör kanallarındaki kütlesel debilerin dağılımı ve basınç düşümleri numerik olarak hesaplanmış ve deney düzeneğinden alınan sonuçlar ile karşılaştırılmıştır. Sonuç olarak, deney düzeneğinden alınan basınç düşümü sonuçlarının numerik olarak elde edilen sonuçlarla % 2’den daha az bir farkla örtüştüğü görülmüştür. 

Anahtar Kelimeler

• Soğutucu akışkan distribütörü,bilgisayarlı simülasyon

Computational Simulation of Two Phase Flow in a Refrigerant Distributor

Öz

In order to keep pressure drops at lower levels and to maintain uniform refrigerant distribution, flow behavior of refrigerants in the distributors at the entrance of evaporators should be elucidated. The aim of this study is to obtain a validated computational simulation of two-phase flow distribution in conventional and new designs refrigerant distributor. The results of the computational simulations of the distributor are validated against the experimental results. The influence of the flow distribution on the evaporator performance has been considered. Distribution of mass flow rate in the distributor channels and pressure drop are numerically calculated and then compared to the data obtained from the experimental facility. As a result, the difference between numerical and experimental study of the pressure drop is less than % 2.  

Anahtar Kelimeler

• Refrigerant distributor,computational simulation

Kaynakça

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