INTRODUCTION AND NOTES ON USE
This model derives the total net present cost of 5 pipeline and pump scenarios. Included in the analysis are capital and running costs.
Inputs include : Flow, pipeline length, static head, pump duty and efficiency, power costs, project life and discount rate, water temperature pipe DN and pipe bore roughness.
Abbreviations: The following abbreviations have been used
1) Pipe type
|4. Classic K9
|5. Classic K12
2) Lining type
|1. Ordinary Portland cement mortar (OPC)
|2. OPC plus seal coat
|3. Calcium aluminate cement mortar
Outputs include: assessment of pressure class required, maximum velocity, total installed cost, net present value of operating cost and total net present value for each option. The optimum DN can then be chosen as the minimum NPV.