I saw a video that showed increasing the air flow doesn't make a hige difference to the cooling of the hot side, but surface area of the heat sink does.

This reminds me of the systems used to cool telephone/internet exchange boxes on streets, I believe they also use peltier coolers to reduce the internal temperature.

2 things that will affect the temperature is having the hot side down with a small space between the fan inlet and the surface it is sitting on. Flip the assembly over and see if the "cold" side drops below 0.

Hi , the first thing that I remarked at the very start of the video was that you turned the device upside down , so the fans was directly on the table surface , and it was obvious that the air flow for the heat sink will be useless . cause the ( propellers ) are sealed by the sides . It`s for this reason that the heat sink failed .They are not pulling any air as they sit directly on the table. This is not a bad critic but a useful one . Lifting the device up about 5 Cms above the table will give a better result as it is .

Thanks for the video very informative, I just bought the same refrigeration plate and I have a couple of questions. The characteristics of the plate I bought are the following (which I assume are the same as yours): voltage: 12v max power: 220W @ 15,4v Max Current: 30A Stable Current: 14A Can I run this plate with a 12v, Max current 18A power supply? or I need a power supply with Max current 30A? Can a 12v, max current 30A Dimmer be placed between transformer/power supply and the refrigeration plate to control temperature and fan speed? Thanks in advance! G.

32:06 awww haha, I found the sound relaxing 😂

I can see that cold surface is covered with blue plastic, and that plastic is thermal isolation mean, temperature measurement using temperature sensor is made over that thermal isolator and temperature in display could be a warmer indication than under blue plastic. I could suggest that take that blue plastic off before making temperature measurements. The direction of the air flow of the fans was well outwards, as it was initially, to extract the heat outwards, but personally, I would direct the air flow of the fan not downwards, but upwards or directed laterally (taking advantage of the direction of convection), since the direction of heat goes upwards.

CONGRATULATIONS FOR THE WORK, FORCED WATER COOLING FOR HOT PARTS WILL GIVE YOU SURPRISING RESULTS

Hi, I live in an environment that has an Air Temperature of 32C on the agverage. I wish to build a tomato growing chamber for testing and I need to keep the temperature at at range of 24 (best) to 27C.. I am thinking of building the grow chamber of 100% BLUE FOAM. My grow lights will be shining down from the top with an ACRYLIC plate - which isolates the heat from the outside. I was thinking that having a fridge Peltier chiller with a fan just attached to the grow chamber will be very inefficient -- not sure - So I was thinking of chilling a water bath in a form box and using an ultrasonic mister (at intervals )to send a chilled fog into the grow chamber , that would allow the chilled fog at say 25C to collide with the leaves and then the overflow of water flows back out via a drainage back to the chill reservoir. What do you think? How would you build it so that it does not cost a lot of energy?

Stack the elements 4 high and use a constant current source driver. 1 layer don't work so well.

test without those screws and a weight ontop. Are they titanium or at least stainless? Cant remember if nylons has a lower thermal conductivity but either way those plastic spacers are not going to provide sufficient barrier in that application.

I think, they calculated the 240W based on the max electrical input: 4x 12V x 5A.

try cooling the hot side with a confined liquid jet impingement methodology

Hello ! Great video ! Since you are making a better version next , do you think it is possible to have a device where the source can adapt to the temperature of the cold plate ? Like if your hand touch the plate , it will give more power on that region to make it colder and keep the avg temperature of the plate the same.

Holla, Nice videos so far. I usually fast-forward videos but with yours, it would mean losing valuable info. You just are too knowledgeable on this topic. I have an idea that might* pull the job on using peltier for air-conditioning. The pathway is simple and you have all the items needed. I've actually gotten a few items myself but it would remove the doubts if someone with all the components actually does it. It involves a few diagrams I will explain by sending you a video of my ideas, sending you a specific KZfaq link and you putting them all together. What is the best way of passing these all to you. Wishing you well - Teemy

Hey, I m curious if we can make a de humidifier for a room 10x10x10ft by using these modules?

is it gud idea to make both sides water cooled. 1 for making hot water bucket. 1 for making cold water bucket. then pumping the water into 2 radiator. cool radiator blowing at my face. hot radiator blowing at window. is my design OK. for cooling side water cooled with radiator is better or air cooled heatsink fins.

How did you run wires for the fans to come on with peltier

Would have helped to have the fans up off the table so they could properly force air through the heatsinks.

"240W" probably the input power lol.

love your videos but dislike you almost never build an actual unit to show us simple folk, if i build this, will it cool my 12x12 room or just me if its super close?

I'm really considering using peltiers on my stove and reject the cold into my fridge

Can you make it for car please 👀👍🏻

Very informative, but could easily be only 1/3 as long. Way to much repetition of the same facts, over, and over, again.

Peltier is nothing more then surface ice maker. So don't waste time with 23% efficacy