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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Fast thermal ramp up/ power efficiency [closed]

I want to build a controlled temperature well in an alumminum block, and right now I am in doub as to what heating method choose. I am mostly torn between a high power resistor such as this or ...
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Multistage peltier with single stage modules [duplicate]

Am I right to assume that two simple single stage peltier modules, such as the ones easily found on eBay, connected in series and placed on top of each other, have performance similar to a 2-stage ...
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75 views

Selecting best Heat Sink for TEG (Thermoelectric generator)

I am trying to solve a puzzle about selecting the right heat sink for my TEG, but I am really confused and lost with lots of equations. Here is the Specification of my TEG (TG12-2.5-01L) Module ...
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Relay max current

I'm building a magnetic stirrer. I wanted to add a heated bed and I've been looking at peltiers as a heat source. To control the temperature I've identified the "WH7016K", a Chinese-made temperature ...
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66 views

What happens when you connect hot and cold sides of Peltier device together?

I would like to know how the Peltier device would act if you heat sink the hot side WITH the cold side. Would it just sit there and consume power? I need something to consume ~15 watts or more at ...
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Feasability of thermoelectric hot/cold blanket or mattress pad?

I want to prototype a thermoelectric based mattress pad like this: where the center of the body is cooled, while the head and feet are warmed. the diagram is a side view and not to scale. The ...
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47 views

Is it okay to rapidly switch on and off a DC adapter

I have a thermoelectric coller I've converted to a heater which I usually use a normal thermostat to control. I've just upgraded to a PID-based controller which of course is going to be switching ...
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How to determine the maximum voltage and current ratings of a peltier element?

I recently bought a peltier with no ratings. None at all. On hindsight, it was probably not the smartest thing to do, but is there any way I can determine the maximum voltge and current values at ...
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Peltier Unit Not Working

Recently I ordered a Peltier unit online and received it yesterday. Naturally, I was very excited to play with it. When I first turned it on, One side got hot, an another very cold. I had read that I ...
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179 views

Micro rectangular heating element for thin layer heating

The purpose The main goal is creating a little hand-held device that would heat a thin film (locally) to \$50-70°C\$ by sliding over it. The film area is \$<150cm^2\$. A secondary goal would be ...
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Can Peltier devices be cascaded?

Can Peltier devices be cascaded to create a bigger temperature difference? Like mounting one on top of anther one to increase the maximum difference from 60 degrees C to 120 degrees.
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189 views

PWM LED dimmer as TE driver

Would it be possible to use a standard 12V DC LED dimmer together with a thermoelectric element to control the temperature? I'm talking about a very simple application with no need of fine tuning. ...
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177 views

how to drive peltier cooler pad at home?

I purchased an peltier cooler plate (90W maximum, but it could work at different power) like the model shown in this link http://pcbheaven.com/wikipages/The_Peltier_Thermo-Element/ . It has a wide ...
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Are there cryogenic peltiers [closed]

I was wondering if there is such a thing as a cryogenic peltier cooler, are there any that are available on the consumer market not just in high-tech labs. The reason that I ask is because liquid ...
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385 views

Peltier generators series vs parallel

If you are using peltiers as generators do you get double the voltage if you connect two in series, and double the ampage if you connect two in parallel?
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thermoelectric problem

A two-stage thermoelectric cooling system is to be designed to maintain a small insulated chamber at 0°F when ambient temperature is 90°F. You may assume a cold-plate temperature of –15°F, ...
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Building a safe low-temperature heat box : heat sources

I'm not sure if this is more of a physics or electronics question, but here goes: I use a heatbox with a temperature in the range of 80-100F for warming wax (for sculpture modeling). My current ...
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1answer
888 views

What is the standard way to make a Peltier power supply with variable power? [duplicate]

Possible Duplicate: How to drive a Peltier element? I want to control a few Peltier using MCU. I think the easiest way is using PWM, but I feel that the efficiency is very low and It maybe ...
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681 views

Powering a 30 watt peltier heatpump

I've got a Peltier element rated at 12V / 2.5A (30W), but I'd like some clarification on how I should power it. I'm familiar with building power supplies with LM78xx linear regulators, and I've had a ...
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How to drive a Peltier element?

Maybe the underlying question is what the Voltage-Current curve looks like. Can I drive it from a voltage source (like you drive a heater) or from a current source (like you drive an LED)? Or even ...
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579 views

TEG in series require power balancer/align adapter?

Do Thermoelectric Generators (TEG) in series require a power balancer, when storing the energy to a battery source? If not, what should I do for my design to distribute to a battery source more ...
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Thermocouple array for generating free electrical energy?

Thermocouple is a material (junction between two different metals) which generates potential difference in terms of millivolts, isn't it? Why don't we create a matrix of thermocouples (many ...
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Can I dunk a peltier (TEC) module in ethanol?

I would like to remove the silicone rubber that surrounds the edge of the unit. My intention is to use the TEC as part of an optical power meter: it is painted black on one side and the terminals are ...
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Do Peltier and heater make a good combo for thermostat?

I want to achieve 0.05C stability in closed space to fit 24 bit ADC and voltage reference. Is it a good idea to use Peltier and heater together ?
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cooling devices

i'm using a peltier device to cool my equipment but it seems not to be effective cause it dissipates too much heat. do you know any other effective cooling device which is very small like peltier. or ...
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890 views

Powering electronics with a low-cost thermoelectric generator?

When I replaced my water heater, the installer was telling me how cool the Bradford White unit I got was because the electronics are powered by the same heat used to heat the water in the tank. I ...
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Is it possible to obtain very small Peltier modules with fast response times?

I have a thin 2x2 mm surface that I'm trying to cool by 5-10 degrees Celsius in 1 second or less. Some very rough back-of-the-envelope calculations reveal that I need to remove ~50 mJ of energy to do ...
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Are peltier devices linear?

Say I've got a peltier block that is rated at 15.2V and 6A, providing 90W of cooling power to one side. Will I be able to operate it at 5V, and will it draw 2A, providing 30W of cooling power? ...