Consider the water distribution system below. Assume the pump efficiency of 0.70: (i) Determine the primary pump size (in HP) and check the valve settings to balance the system. (ii) Determine primary and secondary pump sizes as well as the new valve settings for the optimal primary secondary distribution system. (iii) Estimate the total energy cost savings from the retrofit from existing system to the optimal distribution system. Assume that the system is operated 6,000 hours per year, that the cost of energy is $0.10/kWh, and that the efficiency of all pump motors efficiency is 90%. Circuit 1: 1000gpm, 40ft Circuit 2: 1000gpm, 40ft High head loss Circuit 3: 500gpm, 1001 Circuit 4: 500gpm, 407 5ft 3000gpm 5ft 2000gpm 5ft 1000gpm 5ft 500gpm Pump CP Balance: Balance: 1000gpm. Oft Balance open 1000gpm, 70ft Balance: 500gpm. 507 Consider the water distribution system below. Assume the pump efficiency of 0.70: (i) Determine the primary pump size (in HP) and check the valve settings to balance the system. (ii) Determine primary and secondary pump sizes as well as the new valve settings for the optimal primary secondary distribution system. (iii) Estimate the total energy cost savings from the retrofit from existing system to the optimal distribution system. Assume that the system is operated 6,000 hours per year, that the cost of energy is $0.10/kWh, and that the efficiency of all pump motors efficiency is 90%. Circuit 1: 1000gpm, 40ft Circuit 2: 1000gpm, 40ft High head loss Circuit 3: 500gpm, 1001 Circuit 4: 500gpm, 407 5ft 3000gpm 5ft 2000gpm 5ft 1000gpm 5ft 500gpm Pump CP Balance: Balance: 1000gpm. Oft Balance open 1000gpm, 70ft Balance: 500gpm. 507