A seminar was conducted IEI[Institute of Engineers (India)], Tripura state Center, Agartala for Mechanical Engineering Department for which the chief guest was Dr. Ajay Biswas our institute beloved professor. I along with my best friend Abhishek Kumar from the same batch as well as branch presented our project research report in front of expert panelists who were either professors or doctors in several organizations and students of first year who were ordered to attain the seminar in lust of snacks and a certificate which they can show during their campus placement drive session. The project presentation was fabulous and brought praises and constructive critiques from present faculties and panelists. As momento we were provided with a beautiful tea cup and awarded with a certificate from IEI briefing that we had successfully presented our research paper. The whole time duration was very charming and boosted my self-confidence.

1. Cheap and Multipurpose
DEHUMIDIFIER

2. DEHUMIDIFIER
#DEFINING

3. WORKING PRINCIPLE

4. MOIST AIR ENTERS DEHUMIDIFIER AND PASSES
THROUGH EVAPORATOR COIL

5. AIR IS DRIED AND CONDENSATION STARTS AT
EVAPORATOR COIL

6. FLOW OF REFRIGERANT THROUGH EVAPORATOR
COIL

7. REFRIGERANT IS COMPRESSED AND HEATED UP AT
COMPRESSOR

8. HOT REFRIGERANT FLOWS TO CONDENSOR COILS
AFTER COMPRESSION

9. DRY AIR PASSES THROUGH CONDENSOR COIL
AND GETS WARMED

10. WARM-DRY AIR IS EXPELLED OUT FROM
DEHUMIDIFIER

11. NEED
 preserving Organic and Inorganic foods
 prevent Corrosion
 prevent Condensation
 remove Mold/Fungus
 reduce Moisture contents
 drying Products
 dry cooling of room

12. expanding sector APPLICATIONS
DATA OBTAINED FROM ASHRAE STANDARDS
HOSPITALS
PATIENT & BIOLOGICAL PARTS are hygroscopic and may get infected.
RELATIVE HUMIDITY : 20% - 60%
TEMPERATURE : 20°C - 24°C
LIBRARIES
PAPER is hygroscopic thus it is easily deteriorated.
RELATIVE HUMIDITY : 30% - 50%
TEMPERATURE : less than 20°C
HOME
PEOPLE avoid skin drying, irritation of mucus membranes and dry eyes..
RELATIVE HUMIDITY : 30% - 60% (WINTER) & 50 - 80% (SUMMER)
TEMPERATURE : 20°C - 24°C (WINTER) & 24°C - 27°C (SUMMER)

13. growing industry APPLICATIONS
PHARMACEUTICAL
MEDICINES require tighter environmental conditions for production and storage.
RELATIVE HUMIDITY : 20% - 30%
TEMPERATURE : 21°C - 24°C
POWER PLANT
TURBINES & CONDENSORS should be protected from corrosions.
RELATIVE HUMIDITY : 13% - 30%
TEMPERATURE : less than 24°C
FOOD PRODUCTION AND STORAGE
FOOD needs to be preserved from fungus & molds for being fresh.
RELATIVE HUMIDITY : 12% - 30%
TEMPERATURE : 10°C - 20°C
DATA OBTAINED FROM ASHRAE STANDARDS

14. other APPLICATIONS
RESTAURANT HOTEL DEFENCE WAREHOUSE PRESS MUSEUM
AVIATION AUTOMOBILE FILM SWIMMING POOL SUPERMARKET ELECTRONIC LABS

15. PROBLEMS
#ANALYSING

16. WEATHER & CLIMATE
For THERMAL COMFORTS
Relative Humidity must be between 30% to 60% during Summer & Winter Season.
Above which leads to growth of:
 Dust mites
 Bacteria
 Fungi
and, below which occupants might experience:
 Eye Irritation
 Stuffy Nose
 Viral infection growth in body
Temperature must be between 20◦C to 27◦C during winter season and 24◦C to 30◦C during
summer season, to avoid any discomfort.
DATA OBTAINED FROM ASHRAE STANDARDS

17. WEATHER & CLIMATE CONDITIONS
COASTAL CITIES - MUMBAI
REPORTS
While the temperature was
nearly in the recommended
range. Moreover, the Relative
Humidity was above the
recommended limit during all
season.
DEHUIDIFIER HAS TO BE USED IN
ALL THE SEASONS.
DATA OBTAINED FROM weather-and-climate.com

18. WEATHER & CLIMATE CONDITIONS
COASTAL CITIES - CHENNAI
REPORTS
The temperature was nearly in
the recommended range during
winter season and went above
the upper limit during summer
season. Moreover, the Relative
Humidity was above the upper
limit during all seasons.
DEHUIDIFIER HAS TO BE USED IN
ALL THE SEASON.
DATA OBTAINED FROM weather-and-climate.com

19. WEATHER & CLIMATE CONDITIONS
NON-COASTAL CITIES - DELHI
REPORTS
The temperature was nearly in
the recommended range during
summer and monsoon season
but dropped from the lower
limit during winter season.
Moreover, the Relative Humidity
in the recommended limit
during all seasons.
DEHUIDIFIER HAS TO BE USED IN
MONSOON SEASON.
DATA OBTAINED FROM weather-and-climate.com

20. WEATHER & CLIMATE CONDITIONS
NON-COASTAL CITIES - INDORE
REPORTS
The temperature was nearly in
the recommended range during
all seasons. Moreover, the
Relative Humidity was also in
the limit during summer and
winter season but very high
during monsoons.
DEHUIDIFIER HAS TO BE USED IN
MONSOON SEASON.
DATA OBTAINED FROM weather-and-climate.com

21. WEATHER & CLIMATE CONDITIONS
DESERT CITIES - JACOBABAD
REPORTS
Since it is a desert city thus the
temperature around all seasons
lies in the recommended limit.
The temperature was nearly in
the recommended range during
all seasons. Moreover, the
Relative Humidity was also in
the limit during all seasons.
AIR COOLER HAS TO BE USED IN
SUMMER SEASON.
DATA OBTAINED FROM weather-and-climate.com

22. PSYCHO-analysis
With a monsoon where the temperature is around 30°C, the need of the hour in a
household is a portable and suitable dehumidifier. But a dehumidifier, which can work as
an A.C. in the summer will be a very interesting alternative in the Indian sub-market.
The Product should be:
1. Area specific
2. Portable
3. Multifunctional
Metro and coastal cities sincerely needs dehumidifier in the coming years to cope up with
the varying climatic conditions.
WEATHER & CLIMATE CONDITIONS

23. ECONOMIC DISTRIBUTION
For better HUMAN DEVELOPMENT INDEX
Knowing that with unemployment rate of 4.9% last year and a small no. of 5,000 people are
escaping from the poverty line each day and wage of small skilled labor is 11,900 INR/Mon.
with large variations and high skilled labor is 50,300 INR/Mon. with very less variations.
Thus Product manufactured for health benefits and resource preservation has to be made
available such that it is accessible to everyone.
DATA OBTAINED FROM tradingeconomics.com

24. 11900
50300
32200
12500
10410
8160
10900
48700
31100
12000
9660
7680
0
10000
20000
30000
40000
50000
60000
LOW SKILL LABOR HIGH SKILLS LABOR LIVING FAMILY LIVING INDIVIDUAL MANUFACTURING daily lanor
WAGE-INR/MONTH
WAGE - CLASS
CURRENT PREVIOUS
ECONOMIC DISTRIBUTION
WAGES CLASSIFICATION
REPORTS
DATA OBTAINED FROM tradingeconomics.com

25. ECONOMIC DISTRIBUTION
PURCHASING POWER
REPORTS
DATA OBTAINED FROM tradingeconomics.com
5845
6252
6783
7375
7915
8233
8.84
6.97
8.49
8.73 8.75 8.9
0
1
2
3
4
5
6
7
8
9
10
0
1000
2000
3000
4000
5000
6000
7000
8000
9000
2011 2012 2013 2014 2015 2016
PERCENTAGE
INDIANRUPEES
YEAR
PURCHASING POWER PERCENTAGE CHANGE

26. PSYCHO-analysis
Since such gap exists between wages between various classes and purchasing power of
and average Indian has been limited to 8,233 INR till the end of 2016.
Thus following criteria's have to be fulfilled by dehumidifier:
1. Easy to use
2. Light on pocket
The dehumidifier introduced in the market has it’s cost till a maximum cost value of 12,000
INR to 16,000 INR considering all factors, so as to make it affordable for all Indians with
standard living conditions.
ECONOMIC CONDITIONS

27. IDEA, FACTS
&
PROJECT
#RELATING

28. DESIGN analysis

29. COMPONENT analysis
COMPONENT PARTS FEATURE
COMPRESSOR ROTARY Less noisy and more efficient
EVAPORATOR COILS COPPER MATERIAL
Cheap and high conductivity
CONDENSOR COILS COPPER MATERIAL
DRAUGHT FAN
FORCED Smooth movement and high efficiency
EXPANSION VALVE CAPILLARY TYPE
WATER BUCKET PLATSIC MATERIAL
REFRIGERANT
(PRIMARY)
R-134A (1,1,1,2 -Tetrafluoro ethane) Efficient and less chlorine content
R-600A (Isobutane) Zero, Global warming and Ozone depletion potential

30. LOAD analysis
LOAD DETAILS
HEAT PRODUCED FROM LIVING ORGANISMS
HEAT PRODUCED FROM ELECTRICAL APPLIANCES
CONDUCTION THROUGH SIDE WALLS AND ROOF TOP
CONVECTION THROUGH WINDOWS AND DOORS
RADIATION THROUGH WINDOWS AND DOORS
INFILTRATION OF HEAT FROM UNKNOWN SOURCES

31. LOAD analysis
HUMAN AND ELECTRICAL APPLIANCES
LOAD AVERAGE VALUE PARTICULARS TOTAL LOAD
HUMAN 115 W/person 5 575 W
COMPUTER 200 W/system 5 1000 W
FAN 70 W/fan 2 140 W
TUBE LIGHT 40 W/tube 2 80 W
TOTAL LOAD OF HUMAN AND ELECTRICAL APPLIANCES 1795 W
CONDUCTION THROUGH SIDE WALLS
WALL AREA WALL THICKNESS BRICK THERMAL CONDUCTIVITY TEMPERATURE DROP
6X3 m2 0.15 m 0.8 w/m-K 5 K
LOAD THROUGH ONE FACE OF SIDE WALL 480 W
APPROXIMATIONS
CONDUCTION THROUGH ROOF WALL 240 W
LOAD FROM ALL SURFACES, BY ALL MEANS(CONVECTION, RADIATION AND RADIATION) 200 W

32. LOAD analysis
LOAD PARTICULARS VALUE
HUMAN AND ELECTRICAL APPLIANCES 1795 W
CONDUCTION THROUGH ONE FACE OF SIDE WALL 480 W
CONDUCTION THROUGH ONE FACE OF ROOF WALL 240 W
LOAD FROM ALL SURFACES, BY ALL MEANS 200 W
TOTAL
2715 W
≈ 3 kW

33. AGARTALA MARKET analysis
SECOND HAND PRODUCT
PRICE
FEATURE PRICE (₹)
COMPRESSOR ROTARY 5.500
EVAPORATOR COILS COPPER MATERIAL 4,000
CONDENSOR COILS COPPER MATERIAL 5,000
DRAUGHT FAN FORCED 4,000
EXPANSION VALVE CAPILLARY TYPE 1,000
WATER BUCKET PLATSIC MATERIAL 100
REFRIGERANT
(PRIMARY)
R-134A (1,1,1,2 -Tetrafluoro ethane)
550/KG
R-600A (Isobutane)
TOTAL COST ≈ 20,000

34. ONLINE MARKET analysis
SECOND HAND PRODUCT
PRICE
FEATURE PRICE (₹)
COMPRESSOR ROTARY 4,000 + 1,000
EVAPORATOR COILS COPPER MATERIAL 1,650 + 100
CONDENSOR COILS COPPER MATERIAL 1,800 + 100
DRAUGHT FAN FORCED 2,200 + 1,000
EXPANSION VALVE CAPILLARY TYPE 400 + 100
WATER BUCKET PLATSIC MATERIAL 100
REFRIGERANT
(PRIMARY)
R-134A (1,1,1,2 -Tetrafluoro ethane)
300/KG + 50
R-600A (Isobutane)
TOTAL COST ≈ 10,000

35. TOP PRODUCT analysis
BIONAIRE DEHUMIDIFIER, BD20
 M.R.P: 25,995.00
 Water Tank Capacity: 4.5 Liters
 Water extraction: 20 L daily
 Humidity control range: 40 to 80 %
 Ideal for Room Size: 60 Sq.m
 Power: 360 watts
 Operating voltage: 230 volts
AMFAH DEHUMIDIFIER, AMF-379DH
 M.R.P: 32,990.00
 Water Tank Capacity: 30 Liters
 Humidity control range: 40 to 80 %
 Ideal for Room Size: 80 Sq.m
 Power: 245 watts
 Operating voltage: 220-240 volts

36. TOP INDUSTRY analysis
 Maximum products in
India.
 Operating globally.
 USA MNC.
 Maximum clients in
India.
 Operating in middle east
and India.
 Dubai based Trading
company providing
Italian products.
 Popular on online stores
in India.
 Operating across all
major high economy
countries.
 USA MNC.
 Biggest home brand in
India.
 Providing services in
almost all major cities of
India.
 Indian MNC.

37. project DESIRES
 Sufficient energy efficiency
 Compact structure
 Innovative design

38. CONCLUSION
#GIVING

39. EVALUATION
 Lack of COMPETITIVE MARKET will definitely increase our project cost.
 Selective ENVIRONMENT DATA will help us in fabricating dehumidifier functions.
 INDUSTRIAL EXPERIMENTS will help us in proper designing and assembling
dehumidifier parts.

40. REQUEST
ACCESSING METROLOGICAL LAB reports of Agartala’s weather & climate and behavior of
variation in atmospheric relative humidity with different various seasons.

41. SEEK
YOUR CRITIQUES AND QUESTIONS PLEASE

42. THANK YOU