Tamer Sultan Mousa Ziadeh

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Presentation transcript:

Tamer Sultan Mousa Ziadeh An-Najah National University Faculty of Engineering Civil Engineering Department HARRIS WATER DISTRIBUTION NETWORK Prepared by: Tamer Sultan Mousa Ziadeh Supervisor: Dr. Hafez shaheen WDN- Tammon (2012)

Presentation Layout Introduction. Objectives. Description of the Study area. Design WDN. Results. Recommendations. WDN- Tammon (2012)

INTRODUCTION Importance of water قال الله تعالى :{ وجعلنا من الماء كل شئ حي} صدق الله العظيم. سورة الأنبياء الآية 30 Importance of Water Distribution Networks (WDNs) People who live in different locations, whom their homes are not located in the same area and there is considerable distance between them. they need to have water distribution networks (WDNs). WDN- Tammon (2012)

Objectives Apply the theoretical background which we have learned through the last four years with the reality and practical life. Design the water distribution net work of Harris by using WATERCAD software. Studying and analyzing the water consumption and estimating the losses.   WDN- Tammon (2012)

Study area

DESCRIPTION OF THE STUDY AREA Location Harris is a Palestinian village located in the middle of the west south of Nablus city. It lies on a hill at an elevation of 570 m. It spread over an area estimated at 1,500 acres. Harris is also located northwest of the city of Salfeet, about 7 km away. Population The number of the population, according to the statistics in 2012 is about 3,454 persons.

DESCRIPTION OF THE STUDY AREA

DESCRIPTION OF THE STUDY AREA Rain Average annual rainfall in Harris = 660 mm . The average number of rain days = 50-70 days./year Temperature Rates of temperature in summer about (25° – 32°) C. Rates of temperature in winter about (6° – 15° ) C. WDN- Tammon (2012)

DESCRIPTION OF THE STUDY AREA From question area : Per capita consumption of water 57L/capita/day. Average number of persons per family 8.

Methodology WDN- Tammon (2012)

WATER CAD Software Water CAD Water CAD is a computer software used for analyze the water distribution networks. It can be used for different types of application in the distribution system analysis such as a simple network design. Water CAD analysis output are : the flow for each pipe in the network and the velocities, the pressure for each node and the total head, the head loss in each pipe and more of hydraulic output analysis.

wdn analysis Present Per Capita Water Demand & estimate growth rate We take the 2/L/C/D from the difference between the consumption in 2012 and 2011 Divided by the current population 3454 . Present per Capita Water Demand Present water based on questioner is 57 L/C/d. The future water consumption will be 57 + (30*2) =117 L/C/d.

wdn analysis 𝐫={ 𝒏 𝑷𝒇 𝑷𝒑 -1}*100% 3534 = 3081 (1+r)6 Design water supply is 120 L/C/d. the future water consumption is 120 L/C/d Geometric growth method: Population of the Harris is estimated to be 3454 capita according to PCBS (2012). The population growth rate can be calculated by taking the population between two period like 2007 and 2013 (3081 and 3534) respectively. And applying the geometric growth. Pf = Pp (1+r) ⁿ 𝐫={ 𝒏 𝑷𝒇 𝑷𝒑 -1}*100% 3534 = 3081 (1+r)6 we use r =2.3% in this project.

wdn analysis Present vs. Future Per Capita Water Demand To estimate future water demand for each node, the nodal water demand shall be multiplied by the future demand factor; this factor was found as following formula Factor = ( Future demand Present demand ) *( Future population Present population ) *average # of person Present demand = 57 liter/capita/day Future demand = 120 liter/capita/day Present population = 3534 persons (according to 2013 year) Future population =7011 persons (for year 2043) Average number of person from questionnaire = 8*2 (assume we have Two floors in Harris town ). Then factor = 8.

WDN Analysis Calculate the demand for each node: J-16: Number of houses=6 Demand=6*8 =48 m3/day

Design wdn Harris WDN 33 nodes 38 Pipes 4 Loops Reservoir = 406 WDN- Tammon (2012)

Output data description Table 7.4b: The pressure head, demand, and elevation for nodes when the reservoir supply the network directly (without tank).

Output data description Figure : the pressure head at nodes when the reservoir supply the network directly (without tank).

Output data description Table 7.4c: The velocity and diameter for each pipe

Output data description Figure 7.3.c: velocity for each pipe when the reservoir supply the network directly (without tank).

Design wdn

Output data description Table 7.6a: The pressure head, demand, and elevation for nodes when the reservoir supply tank and the tank supply the network

Output data description Figure7.5a : the pressure head at nodes when the reservoir supply tank and the tank supply the network

Output data description Table 7.6b: The velocity and diameter for each pipe

Output data description Figure 7.5b: Velocity for each pipe

Design wdn

Design of tank The daily consumption is 800 cubic meter. We are design the elevated tank for storing 400 cubic meter. The dimension of tank is : Area equal 100 m2 ( 10*10). height = 4 m.

Recommendation and conclusion In model one(reservoir feed the network directly) Maximum velocity in the network equal 1.78 m/s and the minimum velocity 0.32 m/s .so Velocities in all pipes satisfy the criteria(0.3-2)m/s Maximum pressure in the network equals 95 m (9.5bar) and the minimum pressure equal 31 m (3.1bar) so the pressures in all junctions satisfy the criteria(20-100)m.

Recommendation and conclusion In model two (reservoir supply tank and the tank supplying the network) We solve problems of pressure by: Pressure head has equal 16 bar (160 m) at reservoir. Using elevated tank at height 8 m. Maximum velocity in the network equal 1.92 m/s and the minimum velocity 0.3 m/s .so Velocities in all pipes satisfy the criteria. Maximum pressure in the network equals 51 m (5.1bar) and the minimum pressure equal 18 m (1.8bar) so pressure in all junctions satisfy the criteria, although 18 m is less than min 20 m. it is not important because this value for (J-18) located near the tank.

Recommendation and conclusion For A comparison between model one and two: For pipe-7, the velocity equal 1.92 m/s for model two, and 1.57 m/s for model one. We choose the second design. Because this system has major water source (reservoir) and tank, which stores water for half of day that equal 400 cubic meters. Thus in the event of a stop in the water supply, tank will be supplying the network. The pressure values in the model two are lower than the values in model one and this mean using small diameter which leads to less cost.

THANKS FOR YOUR ATTENTION Thank You… WDN- Tammon (2012)