Portable fridge ( peltier cooler ) undergraduate Design project SLIIT Faculty of Engineering

2. GROUP MEMBERS
• EKANAYAKE E.M.D
• KAUSHALYA S.A.D.T.P
• SUDUSINGHE I.S.P
• RAJEVAN G.
• RATNARAJAH J.T

3. PROBLEM STATEMENT
People like doing outdoor activities such as picnic, fishing and for
medical purpose which is to deliver medicine to village. They need
a Portable Refrigerator to keep cooling their food or medicine.

4. OUR TEAM OBJECTIVE
• Focused on designing and fabricates a mini DC Portable
Refrigerator which is powered by battery which can be
can be useful application in outdoor activities such as,
• Picnics
• Sports
• Vehicles

6. MINDMAP
Portable Fridge
Decision
Making
Finalizing
Shape
Materials
Structure
Smaller
Size
Portable
Easy to
handle
Advantages
Durable
Low
Cost
Works
Efficiently
Small in
size
Reliable
Price
Calculation
Material
Cost
Labor
Cost
Profit
Problems
Power
Supply
Loose
Connection
s
Limited
Space
Disadvantages
Limited
space
Temperature
cannot be
controlled
No
Freezer

7. OBJECTIVE TREE

9. CIRCUIT DIAGRAM

10. PROCESS FLOW CHART
Brainstorming
Start
Understanding
Project Title
Choosing the
Circuit
Literature
Reviews
Listing and
Ordering of
Parts
Building
Circuits
Run Test
Analyzing
Submit
Technical
Report
Diagnose &
Troubleshooting
ENDFridge Cooling
Not
Working

11. CAUSES OF FAULTY
Machines Materials
Methods People Environment
Poor
Refrigeration
Performance
Voltage is
too low
Loose connections
from battery to
fridge
Defects in the
Peltier Cooler
Problems
with the
Fuse
Battery is
dead
Lid seal is
damaged
Poor
ventilation
around the
fridge
Careless
handling
Lack of
Maintenance
Extreme
Weather
conditions
Temperature
of the food
put inside is
too high
Variation of
the fan speed

14. 7P’S MARKETING Price
Place
Process
People
Product
Promotions
Physical Evidence

15. 7P’S MARKETING
Physical
evidence
Place
Process
PeopleProduct
Promotions
Price

16. Portable
Fridge
Enhanced
with Peltier
Cooler
Technology
Ideal for a Cold
Storage of
• Foods & Beverages
• Drugs
• Beauty care
Products
Are u looking For a movable
Cool Box ???
Introductory Price : Rs 2000/=

18. PROJECT BUDGET
Total Funding for the Project
Expense Type of Expense Cost
Peltier Circuit
Rs. 500
Regiform Box
Rs. 300
Fan
Rs. 500
Heat sink
Rs. 450
Magnets
Rs. 100
12V Battery
Rs. 300
Total Project Expense Rs. 2150

19. BUDGET & COSTS & PROFITS
• The full system’s costs at test phase was close to
2150/-
• But under mass scale production of the system
can bring down this to a price as low as 1800/-
• So we proposed that our Portable Refrigerator
can be sell in to the market at a 2000/-

20. TEAM REFLECTIONS
Overall we must say that looking back at our achievements, we think it was worth the time and effort and
was not bad at all. During this project, We have learned a lot of things ;
• Skills of organizing ideas
• Respecting others ideas
• Team co-ordination skills
• Technical stuff in a Fridge
• Report writing skills
• Presentation skills
• How to deal with friends of different ethnics
• Time-management