I have seen a sample solution to this problem but it seems that how it is solved in relation to the concepts I have learned from the book isn't that clear. Your detailed solution to the right approach to this problem is highly appreciated, thank you:>

4 Do the same work as in Problem II.3 for the stirred tank heaters' system shown in Figure PII.4. For tank 1, the steam is injected directly in the liquid water. Water vapor is produced in the second tank. A1 and A2 are the cross-sectional areas of the two tanks. Assume that the effluent flow rates are proportional to the liquid static pressure that causes their flow. At is the heat transfer area for the steam coil. Figure PII.4 (c) Develop the state model that describes the dynamic behavior of the system. (d) How would you express the heats given by the two steam flows in terms of other variables