Subdivision A was estimated to have 10,500 households in 2018. In the same year, each household in Subdivision B consumes 550 gallons of water per day on average. Hypothetically speaking, water is to be delivered from a remote reservoir to a storage tank on ground level at a far-off area of Subdivision A through a pump located 30 ft below the ground. The liquid surface of this vented storage tank, which distributes the water to the households, is 50 ft above the ground. The pipe from the pump to the bottom of the storage tank is initially 16-in. Schedule 40 steel pipe, 2000 ft long, with two fully open globe valves, five quarter-closed gate valves, and 20 regular 90° flanged elbows. The pressure at the pump inlet is -5 psig. The pump operated at 60% efficiency.

A. How much did Subdivision A spend for a 30-day interval if energy consumption is rated at 9.03 kWh?

B. On 2020, a new pump was installed with an efficiency of 75%. The number of households of Subdivision A increased by 12%, which also increased the current pump power rating by 12%. Given the same piping system is utilized, what will be the new average daily water consumption?

C. From the calculated average daily water consumption in item B, what should be the minimum pipe diameter based on the general design considerations? From this, can the old pump be easily replaced with the new pump?