A novel approach for including multi phase flows into pinch analysis - The heat exchange limits estimated by the advanced composite curves

Traditionally, pinch analysis assumes a complete freedom of design when it comes to connecting different stream with each other. However, if the hot flows have a composition of different components, of which some have a condensation temperature on the range in question, the assumption of constant heat capacity flow does not always hold. For streams like this, the end temperature and the total enthalpy given by the stream are dependent on the stream on the other side and a simple temperature difference is not sufficient to describe the situation. Typical examples of streams of this kind are moist air and other mixtures of several gases.