Figure 4: Sequential source allocation with Pinch-based methodology with graphical representation, adapted from El-Halwagi et al. [9]
not reached (a triangle is formed). This also means the limiting contaminant for the first sink is A (which is dependent on the source sequence). Moving on to the second sink, the starting point for the source CC (for contaminant B) after the first sink should be shifted vertically upwards to account for the unfulfilled concentration limit for the first sink – Figure 5b. Note that the ’triangle’ formed in Figure 5a around Sink CC (contaminant B) is still feasible, as explained in section 2.1. For the second sink, the limit for contaminant B is reached, so the source CC for contaminant A after the second sink should be shifted vertically downwards when the remaining is transferred to the third sink – Figure 5c.