Solar water desalination system is where we use solar panel as an electric source to produce electricity to purify the water. Here electro dialysis works by passing a stream of water between electrodes with opposite charges, because the salt dissolved in water consists of positive and negative ions, the electrodes pull out of the water living fresh water at the center of the flow. It is also portable solar panel to set according to the need. It is environmentally sustainable desalination system that provides water for human. It removes hardness of water, salt, pesticides, chemicals. It also consumes low energy & energy efficient.

1. SOLAR WATER DESALINATION SYSTEM

2. Index
• Introduction
• Idea Generation & Machine Specification
• Survey Report
• Quality Function Deployment
• Functional Decomposition & Black Box
• Material Selection
• Stress Analysis
• Cost Analysis
• Conclusion

3. Introduction

4. Introduction
Solar water desalination system is, where we use solar panel as an electric source
to produce electricity to purify the water.
In our product there is a facility to store the power of electricity, this is because
If there is no sun in any day we can use that power for the purification system. Our
project have some control electronics mechanism. This mechanism consists of a
solar panel, a battery, an inverter & a UV light.
It’s also portable solar panel to set according to the need. It’s environmentally
sustainable desalination system that provides water for human. It removes hardness
of water, salt, chemicals. It is also energy efficient.

5. • Sources:
- Local Engineering Workshop
- Senior Expertise
- Web
- Teachers
Idea Generation

6. Machine Specification
● Machine Specification:
- Solar Panel
- Inverter
- Desalination System
- Water Container

7. Working Mechanism

8. Working Video
• Due to Some Restrictions, I are unable to run the product here.
So, I recorded it before coming here. Let’s have a quick preview of
the video I made.

9. Survey

10. Survey Report
• Surveying is done on our product based on questionaries' such as:
- Problems & Disadvantage
- Performance
- Cost effectiveness
- Importance
Surveying is done of about more than 50 peoples

11. Survey
Surveying Spot:
- Mohakhali, Bangladesh
- Tejgaon Industrial Area, Bangladesh
- Banani Residential Area, Bangladesh
- Dhaka North City Corporation, Bangladesh

13. Quality Function
Deployment

14. Quality Function Deployment

15. SOLAR WATER
DESALINATION
SYSTEM
Materials
-Purified Water
Materials
- Impure Water
Information
-Electrical Signal
Energy
-Pressure
-Electrical Power Supply
Energy
-electricity
-Heat
Information
Starting of work
Input Output

16. Functional
Decomposition of Solar
Water Desalination
System

17. Product Hierarchy

18. Material &
Selection Process

19. PARTS SELECTION
CRITERIA
MATERIALS
CONSIDERED
MATERIALS
SELECTED
BODY FRAME
1. LIGHT WEIGHT
1. CORROSION RESISTENCE
1. RESIST THERMAL SHOCK
 ALUMUNIUM
 MILD STEEL
 CAST IRON
MILD STEEL
BASE
1. SPECIFIC STRENGTH
2. THERMAL EXPANSION
3. LIGHT WEIGHT
4. COST
5. CORROSION RESISTENCE
6. VIBRATION RESISTENCE
 MILD STEEL
 CAST IRON
 ALUMUNIUM
MILDD STEEL
CONTAINER
1. LIGHT WEIGHT
2. COST
3. THERMAL INSULATING
 PLASTIC
 CERAMIC CERAMIC
Qualitative Analysis for Solar Water Desalination System

20. MATERIAL SPECIFIC
STRENGTH
(.2)
THERMAL
EXPANSION
(0.67)
SPECIFIC
WEIGHT
(.2)
COST
(.33)
CORROSION
RESISTENCE
(.2)
VIBRATION
RESISTENCE
(0)
WEIGHT
PROPERTY
FACTOR
¥=∑(βiWi)
MILD
STEEL
62 42.30 99.23 100 100 100 88.08
CAST IRON 20 44.5 92.87 20 75 50 17.16
ALUMINIU
M
100 33.07 33.07 40 100 25 66.51
WEIGHTED PROPERTY INDEX CHART FOR SELECTION OF
MATERIAL FOR BASE PART OF A SOLAR WATER
DESALINATION SYSTEM

21. MATERIAL WEIGHT CORROSION
RESISTENCE
RESISTS
THERMAL
SHOCK
ALUMINIUM 1 4 5
MILD STEEL 5 2 3
CAST IRON 3 3 2
MATERIAL WEIGHT
(0.67)
CORROSION
RESISTENCE
(0.33)
RESISTS
THERMAL
SHOCK(0)
WEIGHTED
PROPERTY
FACTOR
¥=∑(βiWi)
ALUMINIUM 20 100 100 46.2
MILD STEEL 100 50 75 82.5
CAST IRON 60 75 50 64.35
WEIGHTED PROPERT INDEX CHART FOR SELECTION OF
MATERIAL FOR BODY FRAME OF SOLAR WATER
DESALINATION SYSTEM

22. MATERIAL WEIGHT(
0)
COST(0.66
)
THERMAL
INSULATING(
0.33)
WEIGHTED
PROPERTY
FACTOR
¥=∑(βiWi)
PLASTIC 40 40 20 33
CERAMIC 100 100 100 99
WEIGHTED PROPERT INDEX CHART FOR SELECTION OF
MATERIAL FOR CONTAINER OF SOLAR WATER
DESALINATION SYSTEM

23. Design Analysis

24. Design Analysis
• Solar Panel: A photovoltaic panel also known as solar panel is used in this product. The
capacity of energy conversion from solar energy to electrical energy is approximately 20 watts. It
means it generates 20 watts of DC electrical energy from solar energy

25. Design Analysis
• -Desalination System :.It consists of the purifying system & control electronics. Purifying
consists of simple filters. Control electronics consists of a battery which reserves the energy
generated from solar panel. Then there comes an inverter which converts the DC current to AC
current. And the last thing is the UV ray light which is powered by the AC current generated from
the inverter.

26. Design Analysis
• Ceramic Container: It contains the purified water. It’s made of
ceramic material. Cause ceramic material keeps the water cool.

27. STRESS ANALYSIS
In our project the parts are:-
Solar panel
Desalination Device
Water Container
In our project we do not apply any types of load in there. So there is no chance of
developing stresses.
For assembling the parts we are using a base of mild steel, but this is not the main
part of our project.
So we do not need any stress analysis.

28. Cost Analysis

29. Cost Analysis Hierarchy for Mass Production
COST
FIXED COST
Machineries
VARIABLE COST
MATERIAL COST
 MILD STEEL
 ONLINE
WATER
PURIFIER
 CONVERTER
 SOLAR PANEL
 CONTAINER
OVERHEAD
COST
 UTILITY
CHARGE
 MAINTAINE
NCE COST
 DELIVARY
CHARGE
LABOUR
COST(includin
g Assembly
Cost)
 JOINIG
LABOUR
 ELECTRICI
AN

30. MASS PRODUCTION COST ANALYSIS
FIXED COST:
Machineries
Machines:
Purchasing cost = 6,000 BDT
Life = 3 years
Salvage Value = 2,000 BDT
Container:
Purchasing Cost = 500 BDT
Life = 2 years
Salvage Value = 0
TOTAL FIXED COST = 6,500 BDT/Month
= (6500x12) BDT/Year
= 78,000 BDT/Year

31. Serial
No
Material
Name
Quantity Per
Unit
Cost
Final
Cost
1 Mild Steel 10 250 2500
2 Inverter 1 500 500
3 Solar Panel 2 1700 3400
4 Online Water
Purifier
1 3000 3000
5 Container 1 500 500
6 Pipe Fittings 2 150 300
MATERIAL COST:
TOTAL MATERIAL COST = 10200 BDT/Month
= (10200x12x10) BDT/Year
= 12,24,000 BDT/Year

32. MASS PRODUCTION COST ANALYSIS
VARIABLE COST
Overhead Cost:
Delivery charge = 500 BDT
Maintenance cost = 1000 BDT
TOTAL MANUFACTURING OVERHEAD = 1500 BDT/Month
= (1500X12) BDT/Year
= 18,000 BDT/Year
Assembly Cost:
Included in Labor Cost.

33. MASS PRODUCTION COST ANALYSIS
LABOR COST:
Machineries
Joining Labor cost = 2,000 BDT
Electrician = 500 BDT
TOTAL LABOR COST = (2000+500) BDT/Month
= 2500 BDT/Month
= (2500x12) BDT/Year
= 30,000 BDT/Year
TOTAL VARIABLE COST = (18000+1224000+30000)
=12,72,000 BDT

34. Break Even Analysis
Start Unit 0 Unit incriment 10
Ver. Cost per unit 10600 Sales per unit 12000
Unit Fixed Cost Variable Cost Sales Total Cost Net Income
0 78000 0 0 78000 -78000
10 78000 106000 120000 184000 -64000
20 78000 212000 240000 290000 -50000
30 78000 318000 360000 396000 -36000
40 78000 424000 480000 502000 -22000
50 78000 530000 600000 608000 -8000
60 78000 636000 720000 714000 6000
70 78000 742000 840000 820000 20000
80 78000 848000 960000 926000 34000
90 78000 954000 1080000 1032000 48000
100 78000 1060000 1200000 1138000 62000
So, the break
even quantity 55.714286

35. 0
200000
400000
600000
800000
1000000
1200000
1400000
0 20 40 60 80 100 120
Quantity
Fixed cost
Variable cost
Sales
Total cost
Break Even Analysis Graph

36. I have developed “Solar Water Desalination System” at our product design and
development sessional. All necessary steps of product design and development
have been followed. After customer surveying, QFD, material selection process,
design analysis and cost analysis we have completed our product.