Discussion on the calculation results of the bubble point and dew point of a certain hydrocarbon mixture?

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\"Thermodynamics of Chemical Engineering\", 3rd Edition, by Chen Zhongxiu. Example 5-8: A mixture with mole fractions of CH4 at 0.1, C2H6 at 0.2, C3H8 at 0.3, i-C4H10 at 0.15, n-C4H10 at 0.2, and n-C5H12 at 0.05 is fed from high-pressure conditions into a separator. The operating pressure of this separator is 0.1013 MPa. It is required that the mixture be separated into 50% liquid and 50% gas; determine the temperature that should be maintained in the separator. Questions: 1. For the example given in the textbook, it is necessary to calculate the bubble point and dew point of the mixture at a pressure of 0.1013 MPa. The results obtained using the trial-and-error method (manual calculation) are a bubble point temperature of -43.3°C and a dew point temperature of 49°C. 2. When this example is simulated using Aspen software with the NRTL property model, the calculated values are a bubble point temperature of -124.34°C and a dew point temperature of -13.16°C. There is a significant difference between these two sets of results; which one is correct? Welcome, friends, to discuss!