Lecture 2 - Water Distribution System Flashcards Preview

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Flashcards in Lecture 2 - Water Distribution System Deck (20):
1

The purpose of water distribution are?

- To supply the system's users with the amount of water demanded
- To supply this water with adequate pressure under various loading conditions

2

3 major components of WDS

- pumping stations
- distribution storage
- distribution piping

3

Connect system components and are the main distribution links throughout the network

Pipe sections

4

They are the most abundant elements in the network

System components

5

Refers to either end of a pipe

Nodes

6

Two categories of nodes

- Junction nodes
- Fixed-grade nodes

7

Regulates the flow or pressure in water distribution system

Control valves

8

The most common type of control valve is? Which is placed at pressure zone boundaries to reduce pressure

Pressure-regulating valve PRV

9

It is needed to equalize pump discharge near an efficient operation point in spite of varying demands, to provide supply during outages of individual components, to provide water for fire fighting, and to dampen out hydraulic transients

Distribution system storage

10

The ____ the pump discharge, the ____ the pump head becomes.

Higher --- lower

11

It is used to increase the energy in a water distribution system.

Pumps

12

Types of pumps

- Positive-displacement pumps
- Kinetic pumps
- Turbine pumps
- Horizontal centrifugal pumps
- Vertical pumps
- Horizontal pumps

13

House the pump, motors and the auxiliary equipment

Pumping stations

14

______ of water mains involves a wide array of metering devices for flow measurement.

Metering

15

It is an empirical formula which relates the flow of water in a pipe with the physical properties of the pipe and the pressure drop caused by friction.

Hazen-Williams Equation

16

______ include series pipes. parallel pipes and branching pipes.

Pipe networks

17

The number of cities and municipalities served by MWSS

40

18

The area in square kilometers of the MWSS service area

1940

19

The number of MWSS customers in 1997 / 9.73M population. 16 hours a day service

5.84M

20

The number of MWSS customers today / 15.8M Population, 24 hours a day service

13.8M