Optimization of three typical lengths of an ejector with fixed and varied area ratio for three operating modes in refrigerated trucks

In order to improve the entrainment performance and mixing efficiency, three typical lengths of the ejector such as the distance between the nozzle outlet and the ejector throat inlet (NXT), the distance between the nozzle outlet and the diffuser chamber inlet (NXD) and the distance between the nozzle outlet and the ejector outlet (NXO) are identified under fixed and varied ejector area ratio (AR) by a comprehensive consideration of the length of mixing chamber and diffuser. As a result, the relations between AR and NXT, NXD, NXO in these three operating modes are evaluated.In order to improve the entrainment performance and mixing efficiency, three typical lengths of the ejector such as the distance between the nozzle outlet and the ejector throat inlet (NXT), the distance between the nozzle outlet and the diffuser chamber inlet (NXD) and the distance between the nozzle outlet and the ejector outlet (NXO) are identified under fixed and varied ejector area ratio (AR) by a comprehensive consideration of the length of mixing chamber and diffuser. As a result, the relations between AR and NXT, NXD, NXO in these three operating modes are evaluated.