Hello Friends this is Part 2 of DIY refrigerator based on peltier module , in this part we utilize 2 peltier module instead of 1 , we also use a thermal controller to set desired temperature to save a bit of energy.
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Step 1: Video
For More Info please watch video.
Step 2: Dimension for Enclosure
Make housing for your Refrigerator using this dimension.
Step 3: Cooling Fan Selection
You can use any cooling system with big/thin fin heat sink, mine is Intel Cooling Fan From P3 PC Because P3 PC generates Lots of heat so heat sink can be massive.
Step 4: Wiring Connections
Use this wiring diagram to connect all parts together.
Step 5: Parts Required
- Peltier Module.
- Cooling System.
- Temperature Controller.
- 5mm Ply Wood.
- Aluminium Foil.
- 12 volt 10 Amp Power supply.
- thermal grease.
Step 6: Temperature Controller
Use Of temperature controller can make this project smart.
Step 7: Custom PCB
Make Custom PCB for Connecting Fan and Various Parts.
Step 8: Big Relay
Use Big Relay Instead of using builtin relay on Temperature controller. Use Flyback diode with relay as shown in picture.
Step 9: Peltier With Cooling Fan
Use Bigger cooling fan to dissipate heat produced by peltier.
Step 10: Project Picture
You can clearly noticed that i use back side for wiring.
Step 11: All Done(Cool)
- This refrigerator can reach below 20'C (Surrounding temperature 39'C).
- Requires 12 volt 6Amp power Source.
- Efficiency is 30-40%.
- Works Great For Maintaining Desired Temperature Between 35'C-20'C (Environment temp 40'C).
- Use of temperature controller can save a little bit of energy.
Make Your Own and let me notify If have Any Problem related to this project.
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