Thermoelectric Peltier Refrigeration Kit Assembly

Introduction: Thermoelectric Peltier Refrigeration Kit Assembly

About: An Open Source and IoT Enthusiast

Thermoelectric coolers operate according to the Peltier effect. The effect creates a temperature difference by transferring heat between two electrical junctions. A voltage is applied across joined conductors to create an electric current. When the current flows through the junctions of the two conductors, heat is removed at one junction and cooling occurs. Heat is deposited at the other junction.

The main application of the Peltier effect is cooling. However, the Peltier effect can also be used for heating or control of temperature. In every case, a DC voltage is required.

Supplies

  1. 1 x Cooling Fan
  2. 1 x Fan Gauze
  3. 1 x Guide cold plate
  4. 1 x Radiator
  5. 1 x Thermal insulation gasket
  6. 1 x Silicon grease
  7. 1 x Pack of Screws

Step 1: Arranging the Components

Make sure to have all components in place.

A Word of Advice: It is normally observed that Peltier chip is sold separately to the rest of the equipment hence it is suggested that if someone is interested to build this prototype, it is suggested to order similar to following from eCommerce platforms such as Robu.in

  1. Thermoelectric Peltier Refrigeration Cooling System DIY Kit
  2. TEC1-12705 40x40mm Thermoelectric Cooler 5A Peltier Module
  3. Orange 12V 1A Power Supply with 5.5mm DC Plug Adapter

Step 2: Assembling All Components - Stage 01

  1. Peel off the sticky side protective layer from the "Thermal insulation gasket" and stick it to the "Guide cold plate" (The bigger Heat Sink). Make sure to align the holes that will help us with the next steps.
  2. Cut open "Silicon grease" pouch and apply a portion of the grease to the center portion of "Guide cold plate", where "Peltier chip" will be placed.
  3. Apply the rest portion of grease to the center portion of "Radiator" (The smaller Heat Sink). This component also gets attached to the second phase of the "Peltier chip"
  4. The right way of placing the "Peltier chip" is that the text inscribed on it should appear on top after it is placed on "Thermal insulation gasket"
  5. Press the "Peltier chip" gently onto "Guide cold plate", allowing the grease to spread evenly. Furthermore, place the "Radiator" onto the "Peltier Chip" and once again press gently allowing the grease to spread evenly on the second side too.
  6. Gently place the screws with guides and screw them slowly to secure both "Thermal insulation gasket" and the "Guide cold plate". Drive the screw until the spring washer becomes flat and do not over thread the screws thereby causing "Peltier chip" to crack.

Step 3: Assembling All Components - Stage 02

  1. Now secure the "Cooling fan" to "Guide cold plate" with one set of four screws provided in the kit.
  2. Place "Fan Gauze" and secure it with the rest set of four screws.

It is now time that we power on the device with 12V 1.0 A DC Adapter and checks if it really works.

It is suggested to have two 12V 1A DC adapter (one to power the fan and the other to power the Peltier chip)

Step 4: Testing the Prototype

At this time, I do not have any digital temperature monitor system to check the temperature on the cooling side, but a test run of the prototype for about 10 minutes, shows water condensation and I could clearly sense that the temperature has gone down drastically.

Please do not hesitate to write back to amruth@smaragdine.work (or) ping me on WhatsApp on +91 9398472594 to collaborate.

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