http://www.instructables.com/id/Better-thermoelectric-Cooler-Heater/

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Better thermoelectric Cooler/ Heaterby karcinagin on July 16, 2008

Table of Contents

Better thermoelectric Cooler/ Heater . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1

Intro: Better thermoelectric Cooler/ Heater . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2

Step 1: Open it up . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2

Step 2: Get the size of fan . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2

Step 3: Go shopping . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3

Step 4: New fan installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3

Step 5: Close and test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4

Step 6: Other ideas . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

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Intro: Better thermoelectric Cooler/ HeaterHow to get better cooling / heating with a $20 on sale Travel cooler / Warmer from WalgreensAnd remember to easily view all the steps add ?ALLSTEPS in your adders bar at the end.

Image Notes1. Signature Classics2. Wrong

Step 1: Open it upTake the side panel of that covers the fan/heat sink. 4 Screws

Image Notes1. 12. 23. 34. 45. 92mm Fan

Image Notes1. Warm off Cool2. side panel

Step 2: Get the size of fanMeasure the size of the fan (this one is 92mm)

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Image Notes1. 92mm

Step 3: Go shoppingLook online or your local computer store for a hi airflow fan but remember the more air flow the louder it will be. ball bearing fans are louder but the lubricant in themdegrades vary slow (long life). Sleeve bearing fans are quieter but the lubricant in them degrades faster then a ball bearing fan.

And if you don't want to have to mod the side panel don't get a fan that is thicker then the one it hasI found a fan at newegg with over 100cfm (cubic feet per minute) that it moves but it is at 56 dBa (decibel)

Step 4: New fan installationInstalling the new fan. Remove old fan by unscrewing the screws.Now for the wiring (i don't no how to solder so i just used wire tape)

Cut and strip old fan wires (leave like 1 in on old fan if u want to use it again)Then cut the wire on the new fan Connect the red to red and the black to black tape with wire tape.

Screw the new fan to the heat sink.

http://www.newegg.com/Product/Product.aspx?Item=N82E16811999613

http://www.instructables.com/id/Better-thermoelectric-Cooler-Heater/

Image Notes1. China Manufacturing At it best get the right tool, Bending the fins.

Image Notes1. 2 screws only, fits better with 22. Again Chines Manufacturing at its best.

Image Notes1. New fan2. Old fan

Step 5: Close and testCut the side panel if you need to for the thicker fan.Screw the side panel back on and fit all the wiring in side.

Plug in and test

Now it should cool down a lot faster and with more air flow it will have to be cleaned from time to time.

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Step 6: Other ideasIncrease the voltage to the thermoelectric thing.Add a fan speed control.Put a internal fan to move the inside air.Cut/Drill more holes in the side panel.

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Comments

9 comments Add Comment

Alexii4 says: Dec 31, 2008. 12:28 PM REPLYI'm making one of these coolers from scratch and need a simple piece of advice. I have a refrigerator box 2" thick, so I have to put a 2" thick aluminum blockthrough it and mount the peltier plate to one end and heatsinks on both. My question is whereI mount the peltier plate. Do I mount it inside the box and sendthe heat through the box to the outside or do I mount the plate on the outside of the box (naturally on the aluminum block between it and a heatsink) andsend the cold into the box from the outside. HELLLLLP! Thanks everyone.. if possible.. email me tha answer (alexii4@yahoo) ~m

TECHMASTERJOE says: Mar 11, 2010. 7:00 PM REPLYon the inside you can use a 120mm CPU cooler on the out side and Right stuff foam to seal it all in but on the inside you will need a heat sink and smallfan use clear silicon to seal around it if it's a wet box don't use a fan just put a copper plate DON'T RUN A peltier with out a sink of some type on bothsides

TECHMASTERJOE says: Mar 11, 2010. 7:10 PM REPLYi have a big cooler it's about 2ft x 2ft x 5ft i made in to one i use a pair of 127watt peltiers and 2 copper plates 3"x 8"x 1/8" and a pair of old zelmancpu fans on the out side thermal epoxied to the hot plate and a small 80mm cpu fan on the cold platefrom room temp in the 80+deg to low 40deg in about 10mins i have a tem controlled using PWM driver 12-18v in and 32khz PWM +booster can push20 amps at up to 18volts even if the input is 12volts

i built a lot of LED controllers and the same rules apply to peltiers just eat a lot more

yandster says: Feb 21, 2009. 8:52 AM REPLYWe're going to build a dog house and I would like to be able to control the temp in there. In OK the summers get hot and humid, and there are a few freezesin the winter. A lot of the options out there made specifically for pets/pet houses are expensive. Do you think this would work to heat/cool a medium sizeddog house in the elements?

finfan7 says: Apr 24, 2009. 1:23 AM REPLYIt wouldn't work very well without a door. And as long as there is a good door and the floor is off the ground it will stay warm enough for most dogs in thewinter. For summer you just remove the door and add a fan if it's too hot. Best summer method is a porch, either on the house or the dog house so thatthe dog can lay in the shade without being stuck in a hot enclosed space.

killerjackalope says: Jul 21, 2008. 4:58 PM REPLYI'm not sure how well this really would work, it might a wee bit but the TE unit still isn't pulling the heat away faster... Also it's a 92MM fan not CM 92CM isnearly a metre...

karcinagin says: Jul 21, 2008. 8:32 PM REPLYIn the I will look into up-ing the power to it maybe

killerjackalope says: Jul 21, 2008. 8:39 PM REPLYHmm Within it's limits it might help a huge amount...

mikedoth says: Jul 21, 2008. 2:11 PM REPLYThis uses a peltier right?

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