1. By:
LaJerrika Carney & Ryan McDaniel
Advisor: Dr. Mohammad Saadeh
Class Professor: Dr. Cris
Koutsougeras
ET 493-01 - Senior Design
Southeastern Louisiana University

2. • Water conservation is the most important
strategy for water planning and management
for the future decades.

3. Reducing the usage of water and recycling of
waste water for various purposes such as
cleaning, irrigation and manufacturing.

4. • Today our faucets are equipped with the
pressure–balancing control valve to help
maintain water temperature in the shower
• Typically takes 15-30 seconds for water to
become hot

5. • Water Conservation in Urban areas
• Improve water management practices
• Design a system that diverts the below-
temperature, undesired water to an
external reservoir using several 2-way
solenoids

7. • 120 V DC Heating Element
• (3) 2-way valves powered at 12V
• 20 gallon water tank
• LCD Display
• PVC pipes and fittings
• 120 V Relay
• Wall outlet
• 2x4 Studs
• 10x10 plywood

8. Heating
element
2- Way
Solenoids
Arduino UNO

9. Parts
Continued
1” PVC Pipe
1” to ½” Adapter
LCD Display

11. 1. Collect data through measuring the actual amount of wasted
water and the desired water temperature.
(September – mid October 2014) 2 weeks
2. Select and identify thermal sensor with measuring ranges in the
vicinity of the desired temperature.
(Mid-October – End-November 2014) 6 weeks
3. Select equipment to be used in building a prototype, this may
include:
a. Water heater (or a heating element)
b. 2-way solenoid (connected to the major water tank and
diverts water between the reservoir and the tub spout).

12. c. Water tanks
d. Micro-controller
e. Actuating device (i.e.: high torque servo motor)
f. Pipes and hoses (PVC pipes, fittings, etc)
(October – End-November 2014) 8 weeks
4. Independent research on materials and project.
(November 2014 – January 2015)
5. Control the valve through the microcontroller using data collected
from the sensor.
(End-November 2014 – End-February 2015) 12 weeks
6. Build the prototype perform final testing.
(March 2014 – End-May 2015) 8 weeks

15.  Stability of the prototype.
 Selecting the power electronics to control the
heating element
 Driving the solenoids using diodes then using
relays
 Relays not corresponding properly to
solenoids
 Original temperature sensor not reading data

18.  Prototype malfunction
 Takes approximately 30 seconds to increase
10 degrees
 Test Prototype