(b) In a chemical reaction plant, water at temperature of 20C in Tank A will be...

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(b) In a chemical reaction plant, water at temperature of 20°C in Tank A will be pumped to storage tank B as the water supply source for the chemical reaction plant as shown in Figure P2(b) through 15cm diameter pipe. A pump with head rise, A, is installed in this system to pump the water from Tank A to storage tank B. The friction factor of the pipe in this system is estimated to be 0.025 while the gate valve is assumed to be fully opened. The total pipe length before entering the pump is 3 m while the total pipe length after leaving the pump is 19 m. Both tank A and B are subjected to open atmospheric condition. The pump supplier has proposed two type of pumps to the company to be installed in the system. You as an engineer for the chemical plant, you are required to select the suitable pump for the system as the information for the pumps are listed in Table P2. Pump A h, 52 1.01 10 0¹:0 Pump B h, 42 2 10¹0¹:0 NPSH-18m NPSH-15m Proper operating Q: 0.01 kL/min to 0.001 Proper operating Q: 0.01 kl/min to 0.001 kl/min kl/min (1) Table P2 AL Develop the required head rise of this system in term of k, with Q is in unit of kl/min. marks) (7 Determine the required operating flowrate of water in unit of m³/s after the installation of this pump in this piping system. marks) (6 Tank A (iii) Analyse the required NPSH (NPSH,) of this piping system in order to avoid the occurrence of cavitation effect. Select the suitable pump (either pump A or pump B) for this system and explain your pump selection for this system. (9 marks) (iv) Identify the pump of your selection (according to Table P2) with proper explanation. marks) (3 AL min 12 m 5 m pump Gate valve Storage tank B (b) In a chemical reaction plant, water at temperature of 20°C in Tank A will be pumped to storage tank B as the water supply source for the chemical reaction plant as shown in Figure P2(b) through 15cm diameter pipe. A pump with head rise, A, is installed in this system to pump the water from Tank A to storage tank B. The friction factor of the pipe in this system is estimated to be 0.025 while the gate valve is assumed to be fully opened. The total pipe length before entering the pump is 3 m while the total pipe length after leaving the pump is 19 m. Both tank A and B are subjected to open atmospheric condition. The pump supplier has proposed two type of pumps to the company to be installed in the system. You as an engineer for the chemical plant, you are required to select the suitable pump for the system as the information for the pumps are listed in Table P2. Pump A h, 52 1.01 10 0¹:0 Pump B h, 42 2 10¹0¹:0 NPSH-18m NPSH-15m Proper operating Q: 0.01 kL/min to 0.001 Proper operating Q: 0.01 kl/min to 0.001 kl/min kl/min (1) Table P2 AL Develop the required head rise of this system in term of k, with Q is in unit of kl/min. marks) (7 Determine the required operating flowrate of water in unit of m³/s after the installation of this pump in this piping system. marks) (6 Tank A (iii) Analyse the required NPSH (NPSH,) of this piping system in order to avoid the occurrence of cavitation effect. Select the suitable pump (either pump A or pump B) for this system and explain your pump selection for this system. (9 marks) (iv) Identify the pump of your selection (according to Table P2) with proper explanation. marks) (3 AL min 12 m 5 m pump Gate valve Storage tank B