Problem 1 : P&ID drawing Consider the process shown in the figure below. A hot saturated liquid enters a tank and from t

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Problem 1 P Id Drawing Consider The Process Shown In The Figure Below A Hot Saturated Liquid Enters A Tank And From T 1 (96.54 KiB) Viewed 15 times

Problem 1 : P&ID drawing Consider the process shown in the figure below. A hot saturated liquid enters a tank and from there is pumped under flow control back to the process. Under normal operation the level in the tank is at height hy. If, under any circumstances, the liquid level drops below the height h2, the liquid will not have enough net positive suction head (NPSH), and cavitation at the pump will result. It is therefore necessary to design a control scheme that avoids this condition. Hot saturated liquid Speed h 1 FC 50 F h2 FT 50 To process Questions a. Complete the P&ID drawing so that the level in the tank is measured and controlled by an LC50. Such that the FC50 is a reverse-acting controller, while the LC50 is a direct-acting controller. The output of each controller in the P&ID diagram should be connected to a low selector LS50 from which a signal at its output goes to the pump. b. What is the nature of this control strategy?