Analysis of application of two-phase injector in ejector refrigeration systems for isobutane

Two-phase vapour-liquid injectors may be applied as a feeding pump device or as a condensing device in many applications. In these injectors vapour is a motive fluid which enthalpy is used to compress and heat a liquid - the secondary fluid. The model of the cycle operation of the ejection system equipped with two-phase vapour liquid injector as a feeding pump was proposed. Two-fluid model for the two-phase flow in such injector was proposed in the paper. The model equations were formulated for one-dimensional steady flow. The analysis of the operation if this cycle was presented for isobutane as the working fluid.