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Department of Mechanical Engineering
Seminar on
SOLAR DESALINATION SYSTEM USING
HUMIDIFICATION AND DEHUMIDIFICION
& COMPARITION WITH CONVENTIONAL
MODEL
Presented by
NISHANTH G SHETTY
SHRIKANTH G KOTIAN
SUHAS A
VARUN N NAIK
CONTENTS
 Introduction
 Components
 Desalination process
 Testing data and Graph
 Conclusion
INTRODUCTION
 Water is available in abundance on earth.
 70% of earth is covered with water .
What is Desalination?
 Water desalination processes separate dissolved salts
and other minerals from water.
What is Humidification Process?
 The process in which the moisture is added to the air
without changing its dry bulb (DB) temperature is
called as humidification process.
What is Dehumidification Process?
 The process in which the moisture is removed from
the air keeping its dry bulb (DB) temperature constant
is called as the dehumidification process
DESALINATION SETUP
COMPONENTS
1. Solar air heater
Aluminum duct
Air blower
Reflectors
Solenoid valve
2. Humidifier and Dehumidifier
 Water sprayer
 Pump
 Pipe line
 Saline water
storage tank
3. Electronic Components
Solenoid valve
Thermocouple
Digital display
4. Conventional model
Wooden box
Leakage proof
covering
DESALINATION MODEL
DESALINATION PROCESS
 Air heated to required temperature using air heater
 Hot air passed to Humidifying chamber
 saline water is sprayed over hot air to create humidity
 Humidity is condensed in Dehumidifier
 Distilled water is collected
Date
9 am
(0 C)
11 am
(0 C)
1 pm
(0 C)
3 pm
(0 C)
5 pm
(0 C)
Water
collected
(Lit/hr.)
10-02-17 44 56 72 68 57 0.8
15-02-17 43 55 71 67 56 0.7
20-02-17 45 57 73 69 58 0.9
25-02-17 46 58 74 70 59 0.9
05-03-17 40 52 68 64 53 0.7
10-03-17 48 60 76 72 61 1.0
15-03-17 49 61 77 73 62 0.9
20-03-17 47 59 75 71 61 1.1
25-03-17 48 60 76 72 60 1.2
05-04-17 51 63 79 75 63 0.8
10-04-17 50 62 78 72 61 1.2
15-04-17 49 61 77 73 62 1.0
20-04-17 52 64 80 76 63 1.3
25-04-17 51 63 79 75 62 1.2
Conventional model readings:
Date
9 am
(0 C)
11 am
(0 C)
1 pm
(0 C)
3 pm
(0 C)
5 pm
(0 C)
Water
collected
(Lit/hr.)
10-02-17 43 59 82 76 61 1.1
15-02-17 40 53 75 69 53 0.5
20-02-17 42 57 79 72 60 1.0
25-02-17 43 62 83 79 65 1.2
05-03-17 37 49 75 69 55 0.45
10-03-17 45 57 82 79 60 1.1
15-03-17 47 62 84 81 70 1.25
20-03-17 44 57 82 79 63 1.15
25-03-17 43 56 79 75 57 1.0
05-04-17 49 65 85 80 68 0.95
10-04-17 48 65 86 81 69 1.35
15-04-17 47 57 83 79 65 0.85
20-04-17 47 65 89 81 71 1.45
25-04-17 48 63 88 81 75 1.35
HDH system readings:
Graphical Representations
Testing date: 25-FEB-17
0
10
20
30
40
50
60
70
80
90
9:00
AM
11:00
AM
1:00
PM
3:00
PM
5:00
PM
Conventional model
readings (water temp)
Desalination system
readings (air temp)
WATER COLLECTED
Conventional model: 0.9 lit/hr.
Desalination model: 1.2 lit/hr.
Testing date: 15-MAR-17
0
10
20
30
40
50
60
70
80
90
9:00
AM
11:00
AM
1:00
PM
3:00
PM
5:00
PM
Conventional model
readings (water temp)
Desalination system
readings (air temp)
WATER COLLECTED
Conventional model: 0.9 lit/hr.
Desalination model: 1.25 lit/hr.
Cloudy weather
Testing date: 25-MAR-17
0
10
20
30
40
50
60
70
80
90
9:00
AM
11:00
AM
1:00
PM
3:00
PM
5:00
PM
Conventional model
readings (water temp)
Desalination system
readings (air temp)
WATER COLLECTED
Conventional model: 1.2 lit/hr.
Desalination model: 1.0 lit/hr.
Date
Water collected in
Desalination model
Lit/hr.
Water collected in
Conventional model
lit/hr.
10-02-17 1.1 0.8
15-02-17 0.5 0.7
20-02-17 1.0 0.9
25-02-17 1.2 0.9
05-03-17 0.45 0.7
10-03-17 1.1 1.0
15-03-17 1.25 0.9
20-03-17 1.15 1.1
25-03-17 1.0 1.2
05-04-17 0.95 0.8
10-04-17 1.35 1.2
15-04-17 0.85 1.0
20-04-17 1.45 1.3
25-04-17 1.35 1.2
Desalination model v/s Conventional model
0
0.2
0.4
0.6
0.8
1
1.2
1.4
1.6
Desalination
model
Conventional
model
Graphical comparison of both the model
CONCLUSION
 It is one of the affordable, sustainable and cost
efficient means of producing fresh water
 Solar energy being a renewable energy source is one
of the eco friendly and will be the most sustainable
energy source in future
 Upgraded models can be more energy efficient
Thank You

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Solar desalination system

  • 1. Department of Mechanical Engineering Seminar on SOLAR DESALINATION SYSTEM USING HUMIDIFICATION AND DEHUMIDIFICION & COMPARITION WITH CONVENTIONAL MODEL Presented by NISHANTH G SHETTY SHRIKANTH G KOTIAN SUHAS A VARUN N NAIK
  • 2. CONTENTS  Introduction  Components  Desalination process  Testing data and Graph  Conclusion
  • 3. INTRODUCTION  Water is available in abundance on earth.  70% of earth is covered with water .
  • 4. What is Desalination?  Water desalination processes separate dissolved salts and other minerals from water. What is Humidification Process?  The process in which the moisture is added to the air without changing its dry bulb (DB) temperature is called as humidification process.
  • 5. What is Dehumidification Process?  The process in which the moisture is removed from the air keeping its dry bulb (DB) temperature constant is called as the dehumidification process
  • 7. COMPONENTS 1. Solar air heater Aluminum duct Air blower Reflectors Solenoid valve
  • 8. 2. Humidifier and Dehumidifier  Water sprayer  Pump  Pipe line  Saline water storage tank
  • 9. 3. Electronic Components Solenoid valve Thermocouple Digital display
  • 10. 4. Conventional model Wooden box Leakage proof covering
  • 13.  Air heated to required temperature using air heater  Hot air passed to Humidifying chamber  saline water is sprayed over hot air to create humidity  Humidity is condensed in Dehumidifier  Distilled water is collected
  • 14. Date 9 am (0 C) 11 am (0 C) 1 pm (0 C) 3 pm (0 C) 5 pm (0 C) Water collected (Lit/hr.) 10-02-17 44 56 72 68 57 0.8 15-02-17 43 55 71 67 56 0.7 20-02-17 45 57 73 69 58 0.9 25-02-17 46 58 74 70 59 0.9 05-03-17 40 52 68 64 53 0.7 10-03-17 48 60 76 72 61 1.0 15-03-17 49 61 77 73 62 0.9 20-03-17 47 59 75 71 61 1.1 25-03-17 48 60 76 72 60 1.2 05-04-17 51 63 79 75 63 0.8 10-04-17 50 62 78 72 61 1.2 15-04-17 49 61 77 73 62 1.0 20-04-17 52 64 80 76 63 1.3 25-04-17 51 63 79 75 62 1.2 Conventional model readings:
  • 15. Date 9 am (0 C) 11 am (0 C) 1 pm (0 C) 3 pm (0 C) 5 pm (0 C) Water collected (Lit/hr.) 10-02-17 43 59 82 76 61 1.1 15-02-17 40 53 75 69 53 0.5 20-02-17 42 57 79 72 60 1.0 25-02-17 43 62 83 79 65 1.2 05-03-17 37 49 75 69 55 0.45 10-03-17 45 57 82 79 60 1.1 15-03-17 47 62 84 81 70 1.25 20-03-17 44 57 82 79 63 1.15 25-03-17 43 56 79 75 57 1.0 05-04-17 49 65 85 80 68 0.95 10-04-17 48 65 86 81 69 1.35 15-04-17 47 57 83 79 65 0.85 20-04-17 47 65 89 81 71 1.45 25-04-17 48 63 88 81 75 1.35 HDH system readings:
  • 16. Graphical Representations Testing date: 25-FEB-17 0 10 20 30 40 50 60 70 80 90 9:00 AM 11:00 AM 1:00 PM 3:00 PM 5:00 PM Conventional model readings (water temp) Desalination system readings (air temp) WATER COLLECTED Conventional model: 0.9 lit/hr. Desalination model: 1.2 lit/hr.
  • 17. Testing date: 15-MAR-17 0 10 20 30 40 50 60 70 80 90 9:00 AM 11:00 AM 1:00 PM 3:00 PM 5:00 PM Conventional model readings (water temp) Desalination system readings (air temp) WATER COLLECTED Conventional model: 0.9 lit/hr. Desalination model: 1.25 lit/hr.
  • 18. Cloudy weather Testing date: 25-MAR-17 0 10 20 30 40 50 60 70 80 90 9:00 AM 11:00 AM 1:00 PM 3:00 PM 5:00 PM Conventional model readings (water temp) Desalination system readings (air temp) WATER COLLECTED Conventional model: 1.2 lit/hr. Desalination model: 1.0 lit/hr.
  • 19. Date Water collected in Desalination model Lit/hr. Water collected in Conventional model lit/hr. 10-02-17 1.1 0.8 15-02-17 0.5 0.7 20-02-17 1.0 0.9 25-02-17 1.2 0.9 05-03-17 0.45 0.7 10-03-17 1.1 1.0 15-03-17 1.25 0.9 20-03-17 1.15 1.1 25-03-17 1.0 1.2 05-04-17 0.95 0.8 10-04-17 1.35 1.2 15-04-17 0.85 1.0 20-04-17 1.45 1.3 25-04-17 1.35 1.2 Desalination model v/s Conventional model
  • 21. CONCLUSION  It is one of the affordable, sustainable and cost efficient means of producing fresh water  Solar energy being a renewable energy source is one of the eco friendly and will be the most sustainable energy source in future  Upgraded models can be more energy efficient