Numerical prediction of capillary tube behaviour with pure and binary alternative refrigerants

Abstract

In this paper, a numerical model is presented for predicting capillary tube performance using new alternative refrigerants, namely pure and/or binary mixtures. The model has been established after the fluid flow conservation equations written for a homogeneous refrigerant fluid flow under saturated, subcoooled and two phase conditions. Numerical results showed that the proposed model in question fairly simulated our experimental data as well as others and fairly predicted the capillary tube behaviour under the investigated conditions.