Extending Murphree Tray Efficiency from Mass to Heat Transfer in Distillation

In this work an extension of the well-known Murphree tray efficiency is proposed. In difference to the original model, vapor and liquid streams leaving the stage have different temperatures. In order to model the vapor temperature, the Murphree efficiency equation is used to calculate the change of vapor temperature between vapor inlet temperature and liquid outlet temperature, which will only be reached at full efficiency. As a result, vapor temperature will be much nearer to its dew point, which better matches reality.