CVE40004 – Water Engineering Report - Engineering Assignment Help

Assignment Task:

Task:

Part A
Undertake an analysis of the expected population and recycled water consumption requirements for the service areas in the above Table. The following points need to be considered in the analysis:
 Assume the life of the project to be 100 years from 2021. The project life will serve as the basis for the projected demand and economic analysis.
 Use the Exponential and Logistic Growth Models in population projection using the following population density of each of the corresponding service areas. Then chose which model to use in further water demand; hydraulics and economics analyses.

Service Area Population Density (persons/km 2 )

Croydon 1100
Croydon Hills 8000
Croydon North 7900
Warranwood 7000
 The assumed uses of recycled water in the service areas and the corresponding percentages of each use to the total amount of water. Assume residential uses only.
 Use the following WSAA recommended typical hourly rate in the calculation of water demand:
 

 Based on the capacity of the treatment plant, would it be able to supply the demand for recycled water in the next 100 years? If not, how much recycled water is needed to supply the 100 year demand?
Part B
 Using the hourly percentage of water usage for each end use presented in Table 1, determine the storage size and the top water level of your proposed recycled water supply reservoir under the following conditions:
o During the off-peak energy period (Peak usage; 7am-11pm, Mon-Sun)
Table 1. Hourly Percentages of Water use per End Use
Time Laundry (%) Outdoor (%) Toilets (%) Time Laundry (%) Outdoor (%) Toilets (%)
1:00 1 3 3 13:00 9 2 4
2:00 0 0 2 14:00 7 1 4
3:00 0 0 1 15:00 6 3 3
4:00 0 0 1 16:00 5 3 4
5:00 0 2 1 17:00 4 2 5
6:00 0 1 1 18:00 5 5 5
7:00 2 3 3 19:00 5 6 6
8:00 4 6 6 20:00 5 11 6
9:00 6 3 7 21:00 4 22 6
10:00 9 4 6 22:00 3 10 6
11:00 10 2 5 23:00 3 6 6
12:00 10 1 4 24:00 2 4 5

Part C
Based on your group’s proposed pipeline route, it’s length, storage location, recycled water demand and average pumping rate calculated in Parts A and B, undertake a hydraulic analysis to supply recycled water from the Treatment Plant to the proposed storage under the following condition:

o During the off-peak energy period (Peak usage; 7am-11pm, Mon-Sun)
It is recommended that you prepare a spreadsheet in undertaking your analysis to facilitate your calculations.
 For your proposed pipeline length and for each pipe diameter presented in Table 2, calculate the following:
o Major and minor head losses. Assume C HW = 130 and pipe to be flowing full. Assume the type of entrance and exit for the calculation of minor losses.
o Head to be delivered by the Pump and Power required by the pump to deliver the needed amount of recycled water. Assume a pump efficiency of 70%.
o Adopt Cement Lined Steel Pipe for the pipe’s entire length.
o You may find that future use of your spreadsheet will be made easier if you allow for other pipe diameters to be analysed, as well as those that produce the economic velocity, 0.8 – 1.4m/s.
o Calculate the pressure increase, P h due to water hammer and check against safe working pressure of the pipe. Assume instantaneous shut down.

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