Capillary tubes are widely used as expansion devices in small-capacity refrigeration
systems. Since the refrigerant flow through the capillary tubes is complex, many researchers …

The capillary tube is often served as an expansion device in small refrigeration and air-
conditioning systems. In this paper, a generalized correlation for predicting the refrigerant …

This paper presents an experimental study on HCFC 22 alternative refrigerant mixtures flow
through capillary tubes. Results for R-410A and R-407C show that the main operational …

To measure mass flow rate of R32 through EEVs under real operating conditions, a
commercially available air-water heat pump (AWHP) system was operated in as wide a …

Refrigerant flow through a capillary tube is complicated, and many empirical correlations
have been proposed for calculating the refrigerant mass flow rate through capillary tubes. A …

The present study explores the potential of using visualization techniques to investigate
refrigerant/oil flow through adiabatic capillary tubes. A literature review shows that these …

This paper presents a modified dimensionless neural network correlation of refrigerant mass
flow rates through adiabatic capillary tubes and short tube orifices. In particular, CO2 …

A detailed one-dimensional steady and transient state numerical simulation of the thermal
and fluid-dynamic behaviour of capillary tube expansion devices considering metastable …

This paper presents a new method to obtain generalized dimensionless correlation of
refrigerant mass flow rates through adiabatic capillary tubes and short tube orifices. The …

Capillary tubes are extensively used in small refrigeration and air-conditioning systems with
synthetic refrigerants and hydrocarbons. For CO2 transcritical applications, it has been …