No abstract

A modified ejector model for entrainment ratios calculation is proposed based on the sokolov’s ejector model and experiment data obtained by Huang et al. This model has a good performance in predicting the maximum entrainment ratios of ejectors at design conditions. The computer program base on the model returns maximum entrainment ratios for R141b and R134a at different generation and condensation temperatures. Based on the analysis of the calculation results, it is found that the entrainment ratio increases with the increasing of generation temperature for R141b when the generation temperature is below 100°C, whereas, it reaches maximum at about 85°C for R134a.