The stream data for a process are given in the following table: Table 2: Stream data for a process Supply Target Heat capacity Stream temperature (C) temperature (C) flowrate (kW /C) 1 200 100 0.4 2 200 100 0.2 3 150 60 1.2 4 50 140 1.1 5 120 2.4 80 Using the stream table data above, a) Target for minimum hot and cold utility requirements for AT min = 10C EITHER by using the composite curves OR problem table algorithm. Conclude the pinch temperature for the hot and cold streams. b) Use the pinch design method to synthesise a heat exchanger network that meets the utility targets identified in (a). c) By relaxing the constraint of ATmin = 10C, shift heat load through a utility path such that the network uses only hot utility and no cold utility at all