Powering Thermoelectric Module (Peltier) Answered

I am trying to understand how TEC modules work, and I think I have it figured out now, but was hoping that someone with more electrical knowledge could verify that I have it right. I am looking at this TEC module. My current understanding of this is as follows: 1. If I regulate the current to this module to a max of 2A, the maximum amount of heat that the module will move at DTmax = 0 would be approximately 75W. 2. If I regulate the current to this module to a max of 2A, the module will not exceed a DT of ~20C. 3. If I regulate the current to this module to a max of 2A, the voltage could range between ~4-6V, but would not reach 10V due to the limitation of DT. 4. Therefore, this module, limited to a max of 2A, would use at max 12W (approximately). Is that all correct? Second, I am comparing the above module to this TEC module. For this second model, my understanding is: 1. If I regulate the voltage to this module to a max of 12V, the maximum amount of heat that the module will move at DTmax = 0 would be 28W. 2. If I regulate the voltage to this module to a max of 12V, the module will reach its DTmax of 67C (theoretically). 3. If I regulate the voltage to this module to a max of 12V, the current could range between ~0.75-1A, but would not reach 2A due to the limitation on voltage. 4. Therefore, this module, limited to a max of 12V, would use at max 12W (approximately). So basically, it is a trade-off between DTmax and heat moved at the same wattage. Is that correct?

Question by eblingdp 4 years ago  |  last reply 4 years ago

How to control the temperature of a peltier module?

What is the most efficient way of controlling the degree of hotness or coldness of a 12v 6A peltier module? Can I use PWM?

Question by Jayvis Vineet Gonsalves 5 years ago  |  last reply 8 months ago

keep getting a short when I connect a peltier module to DC power source

I am trying to power a peltier module (3.9V 9A 21.3W). I have connected it to a DC power source at 3v and I keep getting a short. I have tried different voltages below the 3.9V and am still getting the same result. Am I approaching this at too basic a level? 

Topic by suzanneocallaghan 2 years ago  |  last reply 2 years ago

How many peltier module i have to use for removing heat load of 250 watt?

 i am using peltier modules  12706   ( vmax  15 v, Imax  6 A)               by checking it was running at   12 v  and 3.5 A and   peltier module 12715  ( Vmax  15V ,  I max  15 A )           was  running at  12 v  and 5.5 A I am using computer SMPS to run this peltiers so i can only get 12 v max is there any way to increase voltage to 15 volt.

Question by YogeshK33 3 years ago  |  last reply 3 years ago

Any knowledge on a peltier cooler thermoelectric cooling module

Needs help putting assembling a thermoelectric module for a possible inventing.  Suggestions on the supplies and parts needed

Topic by jayhead 7 years ago  |  last reply 6 years ago

Controlling peltier module temperature base on CPU temps?

Can i use PWM on the motherboard or do i have to buy a separate controller? I plan to use it on a high TDP CPU like the Xen E5 1650v4.

Question by PhuckhangN 9 months ago

Required Power Supply for Peltier (TEC12715)

I'm going to build a Mini Airconditioner based on Peltier Module. I'm going to use 10 Peltier Module for better cooling. 1 Peltier requires Umax (V):15.4 Imax (A):15 Max power consumption (watt):231 Watt. Which Power Supply Driver is required to run all 10 Peltier Elements. [I am from Non-Electrical Background].

Topic by Karthiie keyan 1 year ago  |  last reply 1 year ago

Can i use Copper Oxide to make a Home Made Peltier?

Here's the site http://sparkbangbuzz.com/copper-oxide-te/copper-oxide-gen3.htm .  i thought that i can use Copper(I) Oxide to make a Peltier Module. Peltiers are made up of semiconductor materials like bismuth telluride. 

Question by bhipolito1 4 years ago  |  last reply 4 years ago

Thermoelectric cooler/module

I'm working on a project with peltier coolers. I want to get it as cold as I can. What would be my optimum power source? Amps over volts? If it helps I am planning to hardwire the device. and I'll have plenty of room for mounting fans on the hot sides heatsink Here are the specs 50mm x 50mm x 3.64mm 245 - 320 Watts of cooling power Operates from 0-15 volts DC and 0-26 amps Operates from -60 deg C to +180 deg C Thanks

Topic by curve12 11 years ago  |  last reply 11 years ago

How to evaporate/liquify acetone using peltier element?

Hello, I’m Georgios Grigoriadis and I’m trying to build a machine which could evaporate acetone and the liquify it. I want to use the Peltier element. My questions are: 1/ Is it possible to heat a metallic bowl, using the Peltier element, in order to to evaporate the liquid inside it (acetone) ? 2/ After having evaporate the liquid ( in my situation is acetone) I want to take the vapor from a tube to a metallic closed container, on which ( from the outside side) will be stuck a Peltier modules. Is it possible, using the Peltier module to freeze the container in order to liquify the (acetone) vapor? I also want control the temperature of the Peltier element but also how many time the Peltier module will work. Do you think that it is possible to use the Peltier modules in order to do that I want? If not what do you propose me ? Thank you very much for your interest and for any help. (I’m sorry if my English isn’t perfect ;), if something is very difficult to understand, don’t hesitate to tell me)

Question by GeorgiosG1 1 year ago  |  last reply 1 year ago

Thermal Electric generation using peltier modules and a household plumbed radiator?

My idea was being energy conscious of some how incorporating thermal heat from the heating system of my house to power LED Lights in the rooms where there is radiators. I need to find a way to incorporate a make shift kit using peltier modules heat from the radiators and a natural way to cool in a bid to reduce the electric during the winter months. Advice is welcomed and opinions also taken onboard as regards to its productivity and if it will be able to do its designed task. Thanks.

Question by AlecW 4 years ago  |  last reply 4 years ago

Trying to create a cooler that plugs on the mains. How should I make it

I want to use this item (peltier module) to create a cooler. It will use a fan + heatsink to blow cool air. I dont have much knowledge in circuitry (only highschool level) so I wanted to know what I would need to create this and how the design should be. Thanks

Question by freerun 9 months ago  |  last reply 9 months ago

Stove fan problem - suggestions?

Hey guys I hope this is the right place to ask about this but apologies if not! I've got a home made stove fan powered by a TEC/Peltier module, and it worked ok for a long time but was pretty weak so I built a new bigger one to get a better result. This one uses 4x TEC modules (I think the code on them is 12706), with two series pairs connected in parallel (to double the voltage output, AND the current output).  So two pairs, with each pair in series for higher voltage, then the two pairs together in parallel. It works, but after a while it slows down & stops.  I think the reason is the top half heatsink is getting too hot from the stove where it needs to be kept cool. Problem is that i need these wide heatsinks both top and bottom in order to cover all 4 modules, so I'm not sure quite how to get round this problem? Can anyone give any good suggestions on this please? Many thanks! Jim

Topic by Mr Joshua 5 years ago

How can I control the heating and coldness of a peltier module?

Question by Analog Technology 2 years ago  |  last reply 2 years ago

With ebay I am protected when I buy internationally because if I don't recieve it I can just say I didn't get it, right? Answered

I want to buy a peltier module to make a fridge for my locker to keep my lunch cold, but the only place to get one cheap is on ebay, from Hong Kong.  This is what I am looking at: Peltier Module.

Question by furrysalamander 8 years ago  |  last reply 8 years ago

What is the best wire for generating heat? Answered

I am making an Instructable for some contests. The basic concept is below: -Put two peltier modules on each bloodline on the neck -Put small heat sinks that takes advantage of wind on the other sides of the peltier modules -Use the electricity generated by the peltier modules (While skiing in ~20F) on a heat-generating device located near the hands -Cover the parts that I can with some fabric and possibly build it into a neck warmer or face mask So my question here is: What kind of wire should I use to generate the heat on my hands? I'm looking for high-efficiency and fast to generate the heat Also, do you see any flaws in my concept that I should change? Lastly, the most important question I feel I should ask here is: Will the peltier modules generate enough electricity to make a significant difference on the heat of my hands? My hands get cold enough to hurt when I go back into room temperature if that helps.

Question by knexpert1700 4 years ago  |  last reply 4 years ago

Question on using a Peltier/TEC device for air temperature control - Help please.

I want to have some control over the temperature inside the Orchidium I'm designing and I thought it might be cool :) to use a Peltier Device (device aka module) (Peltier aka TEC or Thermoelectric Cooler). I find I need a lot of help! (Please!) Alright, this isn't a completed Instructable, it's a plea for help, and maybe if the subjects lie in some of your fields of knowledge then we can all enjoy and learn from it. So, the Orchidium I'm designing is an acrylic case 24"W x 18"D x 30"High. It's to grow species orchids indoors in a microclimate, with LED grow lights, proper humidity, air movement and temperature control. (Of course, other critters would like the case, too: poison dart frogs, newts, carniverous plants, etc.. But I'm going to call it the Orchidium.) I've got it all pretty well planned out so that it can be built for a very reasonable price (yes, including the LEDs) and still be aesthetically pleasing and real purdy, too. All planned out EXCEPT FOR THE TEMPERATURE CONTROL. I was looking for some way to cool my case and I stumbled across Peltier devices in eBay. They are CHEAP, costing about $5 or more, depending on the Wattage, etc. The eBay sellers intimated that all you have to do is plug them in and the device gets ice cold. Later, with diligent web-study I learned that actually ONE SIDE of the peltier gets cold, while the other side gets hot. Also, you MUST attach a heat sink and fan to both (?) sides of the peltier. Also, that these devices are not ready to be plugged in; you must attach a DC power supply to them. Oh, another trick that these miraculous devices do is reverse their hot & cold sides when you reverse the polarity of their juice. Ideally, I would like a Peltier device with heatsinks, fans, a thermostat and a DC wall transformer attached... the Peltier/heatsinks/fans would measure about 2" x 2" x 6" and would be mounted in the sidewall of the Orchidium. When the temperature is 65-85F degrees the orchids are happy and the device is Off. But when the thermostat senses the internal temp going over 85F it turns on the Peltier, cold side inside, and so the inside of the case doesn't go up to 90-95F like mine does now; it cools the case a little. Conversely, for someone with chilly orchids or sneezing newts the thermostat would switch the Peltier to hot-side-in to heat the Orchidium a bit. The retail cost for us to buy a Peltier device, 2 heatsinks w/fans and a DC transformer is cheap... roughly $30. The thermostat might be cheap, but I don't know enough about what's needed. If it's too expensive then the Orchidium can do without it. I was hoping I could find an off-the-shelf Orchidium cooler/heater. No such luck. These miraculous Peltier devices are still practically undiscovered -- relatively speaking. People want to use them to cool their computer chips but are hampered by condensation; my orchids welcome condensation. Pathetically, it seems the most common use for Peltiers now is to cool/heat the little boxes on your car seat... they plug into your cigarette lighter and keep your 6-pack cold. Come on! You folks at Instructables can surely help me figure out how to best make an Orchidium cooler with this barely-discovered and poorly-utilized device. I started out a few weeks ago writing to many of the Peltier manufacturers around the world in hopes they might help me in choosing which of their modules I might purchase for my Orchidium. None of them was any help. They wanted to know how many million Orchidiums I planned per year. They told me my basic plan was hopeless or inefficient cost-wise. A Swedish company wanted $800. An American company wanted $500. Some other company wanted $5,000 to $8,000. I wrote back and said I could get a Peltier on eBay for five bucks. The Swedes snottily claimed that their Peltiers were very high quality. No. No way is any svensker Peltier $795 better than ANY other Peltier in the known universe. They both get cold and grow ice crystals on one side. I just need to cool the case A LITTLE BIT, like from 90 to 80 degrees Fahrenheit. I am not trying to make a refrigerator or freezer. The case (Orchidium) is large, at about 7.5 cubic feet, and there is practically no insulation. Acrylic provides a little insulation, that's all. The temp of the interior of the case is derived from the ambient room temperature of your house... and the lights... which is why I designed it with LEDs. There is a constantly-operating muffin fan inside the case to provide air movement for the plants, but it does not provide any evaporative cooling since it's a closed case. So, first off what size Peltier do you recommend... do you think a 40 Watt would be enough, or what? Next, the placement. I envision the Peltier device mounted vertically through a hole in the side of the case. It might be a plan to mount it in the ceiling, but remember that the LEDs take up most of the ceiling. Next, the heatsinks. I confess I'm not totally clear on this, but I "think" that 2 heatsinks-with-fans may be needed, with one sticking out the outside and the other inside the case. I went ahead and got 2 heatsink/fans from Newegg for supercheap ($1 after rebate), but they aren't really what I want. They're actually shaped to fit some AMD chip. What I think I need is a copper heatsink with a flat bottom a little bigger than the Peltier, and fins... and a heatsink fan attached... and some way to attach it to the Peltier, and through the case to the other heatsink. See? Simple... well it should be but I can find nothing. Next, the power supply. I know it has to be DC, but I don't know which brick to get. I did find a bunch of DC or AC Wall Transformers for sale at alltronics... around $10 or so. All that stuff would be enough... at least to test the cooling power. But if we want to go whole hog then the icing on the cake would be thermostatic control of the Peltier. Well, I throw that out in case one of you is sharp in that field.

Topic by Knuten 11 years ago  |  last reply 8 years ago

I need a heat sink like this one, please help?

I have been looking to find a long heat sink like this one: http://www.anglia-live.com/products/kw/LAM-4-150-05-V/774353001_HEATSINK-FAN-150MM-5VDC but I can't find one that is cheaper or similar (Other than other models of this). I basically want to make a thin air conditioner with about 18 peltier units. I want one of those heat sinks on the hot side. I then want to do the same thing on the cold side or I want to use a bunch of mini 40x40mm fans on each cold side of the peltier units. Please let me know if you know any similar heat sink designs or if there is a name for this kind of design. Also, if there are no similar heat sinks, could I just go to Home Depot and buy a hollow aluminum square pipe and add a mini PC fan instead of this? I would assume it wouldn't be as effective because of the less surface area, but, it would be cheaper I think.

Question by knexpert1700 5 years ago  |  last reply 4 years ago