Soğutucu Akışkan Distribütöründe İki Fazlı Akışın Bilgisayarlı Simülasyonu

Year 2017, Volume: 2 Issue: 2, 79 - 88, 29.12.2017

Mehmet Direk

Abstract

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. 

Keywords

Soğutucu akışkan distribütörü, bilgisayarlı simülasyon

Computational Simulation of Two Phase Flow in a Refrigerant Distributor

Abstract

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.
 

Keywords

Refrigerant distributor, computational simulation

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