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Questions tagged [peltier]

The Peltier effect is a reversible physical process which is exploited in Peltier cooler/heater. The flow of current through this device pumps heat from one plate of the device to the other. This can be used to both heat and cool electronic components.

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344 views

How to eliminate noise from Relay? [closed]

In my recent project, I am working with Peltier module. Now, here the main purpose of my project is switching between cooling and heating. And for that purpose, I'm using the 5V relay(2-relay) board. ...
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1answer
51 views

Thermo Electric Cooler(TEC) for ICs

I am designing a 9u rack server with optical ports. I want to implement Thermo Electric Cooler(TEC) for cooling the ICs(switches, FPGAs) on board, so that I can reduce the fan speeds. Is this a good ...
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1answer
365 views

Finding a 12 V Peltier module that reaches less than 0 °C on the cold side

I am making a small cooler box using a Peltier. At first, I used a Tec1-12706 without researching first, and it barely went under 12 °C at the cold side. I need a Peltier module that is 40 mm x 40 mm ...
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265 views

Peltier Circuit Components

New to electrical in general, so be gentle... Looking to drive a TEC1-12706 as a cooler/heater, using 24V, 500 Hz PWM as input. To avoid thermal cycling caused by PWM, incorporating LC filter. In ...
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4answers
308 views

Is it possible to use a heatsink without a peltier plate?

At the moment I am working on a project which implies LEDs for street lighting. I need to dissipate around 24 W of heat. In order to do so, I calculated how much heat is dissipated into the air, and ...
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2answers
902 views

Peltier not cooling water

I made a cooling unit with two peltier(12706) with hot side attached to heatsink with fan. And cold side with waterblock i.e (heatsink + peltier(hot side with heatsink) then waterblock then another ...
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27 views

Required Power Supply Driver for Peltier Module TEC12715? [duplicate]

I am making a Mini-Air conditioner based on Peltier TEC12715. I'm going to use 10 peltier elements for better cooling. 1 peltier module requires: Umax(V):15.4 Imax(A):15 Max power consumption (watt):...
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544 views

Driving a Peltier w/ PWM or analog out [duplicate]

I feel like this has been beaten around the bush in a couple other topics, but I am hoping to find something a bit more definitive. I am looking to control a Peltier thermoelectric cooler. I've got a ...
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1answer
47 views

I want to be able to simply control the cooling tempreture of a small 40 to 60 millimeter thermoelecrtic cooler

i want to be able to control the cooling temperature of a small 40 to 60millimter TEC. I understand voltage level plays a part but do not know what voltage level equtes to what temperature on either ...
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3answers
156 views

Why Electro Mechanical Relay makes controller reset?

In my current project, I am controlling Peltier Element Temperature which is current controlled load using Arduino. I am controlling Temperature of Peltier by applying PWM to H-bridge. In addition ...
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0answers
122 views

Using Op-amp as comparator with low supply voltage (1.1v)

As part of a school physics project my group was given 2 TEC1-12706 and was told to find some way to generate electricity via Seeback effect and recycled materials. Due to low efficiency of the TEGs, ...
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4answers
125 views

How can I divert current to higher resistance components in parallel?

I am working on a circuit and I need to divert the current to higher resistance components in parallel without changing their voltage input. There are 4 thermoelectric devices (T1, T2, T3, T4), a ...
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0answers
96 views

Peltier Module constant time and thermal Load

Hi everyone I am new to this forum. I am doing a project where I need to control one of the sides temperature of a Peltier device against human skin. So one side is in contact with the skin, and the ...
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2answers
1k views

Thermal Paste on Cold Side of Peltier Freezing and not transferring “Heat”, what gives?

I am running a peltier element, and on the cold side an aluminum heat sink to effectively spread out the cool surface to the maximum possible surface area. I just bought this new thermal paste: ...
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2answers
765 views

Liquid Metal Thermal “Thermal Grease” on a Peltier Element?

I was wondering if Liquid Metal Thermal Grease could be placed on a peltier's hot side to better conduct heat from the hot side to the heat sink. I know that aluminum is "Eaten" away by the thermal ...
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1k views

PID temperature controller with Arduino using a NTC thermistor and a Peltier Cell

I'm trying to control the temperature of a LED laser (which have a thermistor as temperature sensor and a Peltier Cell, both integrated with the laser) and what I'm implementing is a PID controller ...
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248 views

Can TEC1-12706 be damaged by running on low current?

I'm using a HDD power supply of 12V 2A. The plate stopped heating or getting cold. I tested the power supply which is working fine. Tried changing the power supply by mobile charger with no effect. I ...
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720 views

Running a Peltier water cooler from a battery

I'm planning on using this unit: 12V Peltier water cooler for a portable heater/cooler. As such, I would need to run it off a battery. Based on what I've been reading, the best choice is a deep-...
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1answer
65 views

Trouble with Turning Off/Powering Off two systems at once, how should I approach this?

I have an overall that I want to shut off completely with a flick of a switch; however, the system I want to shut off is comprised of two smaller, completely separate systems. Let me give you an ...
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1answer
770 views

How can I tell what amperage a 12V rated electrical device will run at 5V?

I am buying a TEC 12706, a thermoelectric Peltier. It's rating is: 15.4V 6A (maximum voltage and amperage). I want to run this Peltier at 5V and was wondering how I would convert this data to see ...
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1answer
190 views

Wire peltier device and fan to power supply

I have 6 12v, 6 amp, 60 watt peltier devices and 3 12v, 0.08 amp fans that I want to connect to a 12v, 40 amp, 480 watt power supply. This guy over here: https://www.banggood.com/AC-110V-220V-TO-DC-5V-...
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89 views

Confusing Peltier Power Draw [duplicate]

Essential Question: Which Peltier is the most Efficient for reaching coolest temperature, and is the 6V 2A peltier inefficient? I was looking into more efficient Peltiers for my project and tried to ...
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24 views

Suggestion about Peltier Efficiency With Current Power Setup [duplicate]

I am currently using the very arbitrary TES1-4902 to cool water (small amounts) using a 5V 2.4A USB Battery Pack (2 Peltiers TES1-4902, 2 5V 2.4 A USB Battery Packs = 5V 4.8A) Recently, it has come ...
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2answers
348 views

Will stacked Peltiers produce a greater dT? [duplicate]

I am using this peltier device to ramp an aluminum plate down to -10C in a vacuum environment. I chose this particular device because it had the largest 'Qout' of any single-stage peltier I could find ...
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1answer
122 views

Thermoelectric Generator output computation

Can I compute the output voltage of a thermoelectric generator? I want to compare the theoretical and actual values (generated voltage) of a thermoelectric generator. I'm about to use TEC-12706.
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1answer
377 views

Trying to Get the Most Cooling Power out of TEC Peltier Element: Smaller or Larger Peltier?

I am trying to achieve the strongest cooling effect using a TEC Peltier element. Currently, my set up is two small, 20mm x 20mm peltier TES1-4902 run with a 5V 2.4A USB Battery Pack per peltier. I ...
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1answer
313 views

Peltier cold temperature does not transfer when a heat sink is attached

I am trying to build a peltier cooler. It works. Cold side temperature is about 10C on cold plate of peltier. I want to blow this cool air out. But the cold temperature goes up as soon as the ...
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2answers
142 views

Does changing wire gauge change output of a thermocouple?

So I've been experimenting creating thermocouples with copper and constantan wire, just by twisting them together at one end and heating the junction with a candle and using a voltmeter to measure the ...
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3answers
531 views

optimize peltier element cooling

I am currently playing around with this Thermoelectric Peltier Cooler Setup: I have read that it's possible to cool these elements down to more than -20°. However, I got the elements for cooling an ...
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1answer
458 views

Powering an LED with a Thermoelectric Generator

Can a small Thermoelectric Generator feasibly power an LED? I want to make a small LED circuit that consists of a coin cell, an LED, and some sort of touch-sensitive switch. The entire circuit needs ...
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1answer
60 views

TEC Design and Qc generated?

i've been working on a project in order to cool a thermal box by using peltier elements PID controlled.. I've tried different designs on how to obtain maximum efficiency according to my rig, however ...
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0answers
282 views

Adding Peltier module to an evaporative cooler

I'm planning to add a two Peltier module (TEC 12706 with heatsink on both sides) on a evaporative cooler but I cannot decide where should I put them. Here's the idea: Idea B would be good but I'm ...
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2answers
1k views

How to improve peltier efficiency, use a CPU cooler?

I could really use some advice here. I am currently using a cooled/heated seat cover in my car that uses a peltier circuit to either cool or heat water and that water is then pumped through a matrix ...
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1answer
108 views

drive peltier element

Hi People... I`m working on a Project to create a Colling controled box using peltier elements.. The circuit above works as a voltage follower, dropping DC voltage on the peltier. Allthough its ...
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2answers
782 views

Is there a way to reverse the current of a peltier plate?

I was wondering if it's possible to reverse the current so that the cool side of peltier plate becomes hot? I'm attaching a peltier plate to one side of a container, and the purpose is to have the ...
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2answers
340 views

What are the optimal conditions to maximize Peltier cooling performance and duration?

Hi first time poster here, I got a few peltier plates just last week and have been doing some research surrounding their polarity reversal and the limits of what they can do. However I still have a ...
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2answers
504 views

Corner of Peltier module is very hot

I've bought a generic TEC1-12706 Peltier module and I'm having trouble making it work. I wired it to a 12 volts DC, 8-amp power supply, and connected the hot side to a fan & heatsink with thermal ...
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763 views

How does the power consumption and cooling capacity of a Peltier refrigerator change when the interior is made reflective?

I've a small Peltier cooler which I used to store some chemical stuffs. So, I recently modded the design to make it more bigger and improve its cooling + insulation. I've added an aluminium piece ...
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1answer
197 views

PEltier tile science fair project [closed]

I need help figuring out how to make a teg fan. I connected the thermos electric generator but my motor is not spinning. Which side of the teg do I put the thermal paste and cooller
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1answer
163 views

How far should a TEC1-12706 peltier module be away from the heat source to prevent damage when using it to generate thermoelectricity? [closed]

I am working on my science fair project and only have 5 peliter modules. In order to build my project I need to know how far it must be to keep from being damaged because I can not replace these once ...
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783 views

H bridge for peltier heating and cooling

I am testing DRV8840 circuit in my setup as a 12V, 3amp peltier controller. And there are 3 temperature set points : 25, 30, 37 celcius. Hardware configuration done so far as follows: Trial 1 : ...
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24 views

What are the seeback specs for common production peltier elements

I been hunting for weeks for the seeback output for the most commonly sold peltier elements. I found one set of specs for the TEC1 - 12704 branded by HP rated at 49mv 11ma per degree of temperture ...
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1answer
322 views

Increase Peltier module voltage

I have a peltier dehumidifier that works with 9V 3000mA power.With this electrical power input the cold side keeps a 10-12 °C temp difference from the outside temp.ie external temp=22 °C the cold ...
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2answers
89 views

How can I measure moisture on a conductive flat surface as an analog/digital value?

So as the title states, the question is: Is there a way to measure moisture on a electrically conductive flat surface? Optionally, it would be great if I could have an indication of the amount of ...
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1answer
220 views

peltier driver using AMP OP and MOSFET

i'm in trouble trying to figure it out how to properly control a peltier cell using current control principle . I'm using a sine wave to figure circuit behavior through 0 to 6V and 0.5HZ . Take a ...
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1answer
83 views

Testing a diode's electrical characteristics with temperature control

I would like to test a few diodes electrical characteristics at their device low limit, ambient, and device high limit temperatures. I was thinking of using a Peltier element with a heat sink, but I'...
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0answers
183 views

Peltier broke? Or do they just do this?

I power the peltier on 12v with a heatsink on the hot side The hot side gets lightly warm and they cold side gets nice and cold except one part, The very top right corner on the cold side is hot, the ...
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2answers
485 views

Beginner Question on Whether Running A Fan and Peltier off a Battery Pack Would Work

If I have a 2.4A 5V Max Output Battery Pack, and I buy a 12V, 60 Watt Peltier Element and a 5V .4A computer fan (leaving room for comfort, item is actually 5v .36A), could I run both off of that one ...
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1answer
171 views

Trouble with Peltiers TEC and USB Output Current

here is the website I will be referencing: http://www.instructables.com/id/5-Mini-USB-Fridge!/ So I was reading from Inscrutables on powering a small Peltier TEC to cool your hand while reading, and ...
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2answers
226 views

Thermoelectric Energy Harvesting

I'm building a project based on ltc3108, Linear Technologies IC, and the Peltier cells, TEC 12706. The basic idea is to recharge a battery by the temperature difference between the body-skin and the ...