Answer based on graph

1. (8 pts) A feedback control loop has been installed on a heat exchanger to maintain a constant outlet process fluid temperature, using steam as the heating utility. The P&ID is shown below. Another engineer ran an open-loop step test resulting in the following graph, where the red line is the % controller output (%CO) and the blue line is To, the outlet process temperature in C. (note, on the next page is an enlargement of the graph, and an Excel spreadsheet is provided, which was used to generate this graph). Tset (t), C 55 548 540 54 54 Steam 538 M(t), %CO W.(t), ko D TC 42 536 53.4 532 53 3 C(t), %TO TT 42 520 8 524 522 52 Process fluid W(t), kg 7.(6), C Ti(t), C 51 516 16 514 14 512 12 51 503 08 500 06 504 502 50 0 10 20 30 40 50 60 70 80 90 100 110 120 130 140 150 160 170 180 190 200 210 220 230 240 250 (sec) Condensate a) (25%) Is the process response 1st order or higher order? Briefly explain the reason for your answer. b) (75%) Determine what the FOPDT fitted parameters are for this process. Show your work. 1. (8 pts) A feedback control loop has been installed on a heat exchanger to maintain a constant outlet process fluid temperature, using steam as the heating utility. The P&ID is shown below. Another engineer ran an open-loop step test resulting in the following graph, where the red line is the % controller output (%CO) and the blue line is To, the outlet process temperature in C. (note, on the next page is an enlargement of the graph, and an Excel spreadsheet is provided, which was used to generate this graph). Tset (t), C 55 548 540 54 54 Steam 538 M(t), %CO W.(t), ko D TC 42 536 53.4 532 53 3 C(t), %TO TT 42 520 8 524 522 52 Process fluid W(t), kg 7.(6), C Ti(t), C 51 516 16 514 14 512 12 51 503 08 500 06 504 502 50 0 10 20 30 40 50 60 70 80 90 100 110 120 130 140 150 160 170 180 190 200 210 220 230 240 250 (sec) Condensate a) (25%) Is the process response 1st order or higher order? Briefly explain the reason for your answer. b) (75%) Determine what the FOPDT fitted parameters are for this process. Show your work