The rapid growth of various applications of the ejection refrigeration systems could be observed recently. Because of possibility of the application of solar or waste energy to supply the motive energy they can be thought as a real alternative to compression devices in air-conditioning technologies. The paper deals with experimental investigation carried out on a specially constructed prototype/stand for the case of isobutane as a working fluid. The effects of operation parameters are analysed in the paper. The performance line of the ejector in coordinate mass entrainment ratio-compression ratio are presented and discussed. Exemplary pressure distributions for on-design and off-design conditions are presented.
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