2.A process furnace heats a process stream from near ambient temperature to a desired temperature of 300C. The process stream outlet temperature is regulated by manipulating the flow rate of fuel gas to the furnace, as shown below. (5Marks) Temp O a. Discuss the objectives of this control strategy. b. What is the measured output? c. What is the manipulated input? d. What are possible disturbances? e. Is this a continuous or batch process? f. Is this a feed-forward or feedback controller? F should the control valve fail-open or fail-closed? For the strategy you chose, is the valve gain positive or negative? Why? h. Discuss safety, environmental, and economic issues.