How To Use Epanet_new.pdf

EPANET EPANET is a free software on pipe network analysis provided by USEPA (US Environmental Protection Agency).

Layout of Water Supply System Total HHs = 236, PF = 47 Population = 1,300

Water source (Spring) Q = 2.00 l/sec

Elevated concrete tank

HH=53, PF=11

HH=67, PF=13

J5

HH=36, PF=7

J4 0.290 l/sec

J3 0.191 l/sec HH=14, PF=3

0.366 l/sec HH=36, PF=7

HH=32, PF=6 J7

J2

J6 0.076 l/sec

0.191 l/sec 0.175 l/sec

Distribution network

Steps for EPANET Analysis

1.Open EPANET 2.0 Program

2.Set up a New Project

a. Create a New Project

b. Set Project Preferences: File>>Preferences

b. Set Project Preferences: File>>Preferences

c. Set Project Defaults: Project>>Defaults

c. Set Project Defaults: Project>>Defaults

c

c. Set Map Options: View>>Options

c. Set Map Options: View>>Options

c. Set Map Options: View>>Options

c. Set Map Options: View>>Options

3.Create the Project Scenario

a. Draw the network

a. Draw the network

a. Draw the network

a. Draw the network

a. Draw the network

a. Draw the network

b. Specify Network Properties

b. Specify Network Properties

b. Specify Network Properties

b. Specify Network Properties

b. Specify Network Properties

b. Specify Network Properties

b. Specify Network Properties

c. Run a Simulation

Click Ok

d. Saving＆Opening Project

d. Saving＆Opening Project

d. Saving＆Opening Project

4.Analyze a Network

a. Set Analysis Options

a. Set Analysis Options

a. Set Analysis Options

a. Set Analysis Options

a. Set Analysis Options

a. Set Analysis Options

b. Run Analysis:Project >>Run Analysis

b. Run Analysis

b. Run Analysis

c. View Results

c. View Results: Graphs

c. View Results

c. View Results: Tables

Results of Calculation B.Elev. = 18 m Min.Lev. = 0.10 m, Max.Lev. = 3.60 m D = 4.20 m

H = 26.59m J1

Elev.=40 m

P6

T1 H = 21.50m

L=1000m, D=100 mm

Q=2.50 L/s

L=30 m, D=100 mm

P7 Q=1.29 L/s H = 21.49m

Elev.=13 m

Elev.=11 m

H = 21.45m

J3

P2

P3

J5

H = 21.38m

Elev.=14 m

L=250m, D=75mm

L=300m, D=75mm 0.191 l/s

P1

J4

Q=0.56 L/s

Q=0.27 L/s

0.290 l/s

P4

L=200m, D=50mm

L=200m, D=75mm

Q=0.17 L/s

Q=0.08 L/s

0.366 l/s

P5

L=250m, D=50mm

Q=0.19 L/s Elev.=10 m J2 H = 21.44m

J6 H = 21.48m Elev.=12 m

0.076 l/s

0.175 l/s Elev.=13 m

J7 H = 21.27m

0.191 l/s

Profile of Pipeline from Source to Distribution System 40m

30m Hydraulic Gradient Line 20m 8.49m

7.38m

8.27m

Ground Level Line 10m

Water source

J5

J4

T1

100m

200m

300m

J7

400m

500m

Design of Rural Water Supply System Water source (Spring) Q=2.00 L/s

HH = 20

Reservoir (Tank) Public Tap

L=800 m

L=300 m L=250 m

30 m 20 m 10 m

L=50 m

Water Demand Projections Water Demand = Per capita water consumption x Population Water Demand Projections = Water Demand at Targeted year

Population

2013 at present

2018 after 5-year

2023 after 10-year

Per capita water consumption

Population

example: Targeted year = after 10 years

Water Demand for Design of Facilities Example: Community A Households (HHs) = 20, average 1 HH = 5 persons Total served Population = 20 x 5 = 100 Average Water demand = 100 x 60 lpcd = 6,000 l/d

NRW (Leakage ratio) = 15 % Distributed amount including Leakage = 6,000 l/d / (1 – 0.15) / 86400 sec/d = 0.082 l/sec Maximum Water demand = Average Water demand (including NRW) x 1.30 = 0.082 l/sec x 1.30 = 0.106 l/sec

GOOD LUCK !