Lead in Thermoelectric Series: Seebeck, Peltier & More

There have been attempts to make thermocouples using lead as one of the metals, but it is not as commonly used compared to other metals such as copper and iron.In summary, lead can be used as one of the metals in a thermocouple, specifically in a copper-constantan thermocouple. Both Seebeck and Peltier effects will occur and an EMF will be generated in the circuit. While there have been attempts to make thermocouples using lead as one of the metals, it is not as commonly used compared to other metals.
  • #1
ananthu
106
1
In thermoelectric series, lead is arranged in the middle and other metals arranged both on the left and right hand side of lead. Lead does not exhibit Thomson effect. If you take a metal on the left of lead and another metal on its right, the thermo electric current flows according to certain rules. Ok. But if a thermocouple is made by taking any metal and the other metal lead itself, how lead will behave? Will lead produce seebeck effect and peltier effect? Will there be any emf in the circuit? Was there any attempt to make a thermocouple using lead as one of the metals? can anybody enlighten on this line?
 
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  • #2
Yes, lead can be used as one of the metals in a thermocouple. In fact, the most common type of thermocouple is the copper-constantan thermocouple, which uses copper and lead as its two metals. Both Seebeck and Peltier effects will occur when a thermocouple is made with lead as one of the metals. An EMF will be generated in the circuit as well.
 

1. What is the Seebeck effect?

The Seebeck effect is a phenomenon where a temperature difference between two dissimilar conductors can generate an electric current. This effect is the basis for thermoelectric devices, such as thermocouples and thermoelectric generators.

2. How does lead affect the Seebeck effect?

Lead is a common material used in thermoelectric devices because it has a high Seebeck coefficient, meaning it can generate a large electric potential difference when exposed to a temperature gradient. It is also a good conductor of electricity, making it ideal for use in thermoelectric series.

3. What is the Peltier effect?

The Peltier effect is the reverse of the Seebeck effect, where an electric current is sent through two dissimilar conductors and a temperature difference is created. This effect is often used in thermoelectric coolers, where a temperature difference is used to transfer heat from one side of the device to the other.

4. How does lead affect the Peltier effect?

Lead can also be used in Peltier devices as it has a high thermoelectric figure of merit, which is a measure of a material's ability to convert heat into electricity. This makes it an efficient material for use in thermoelectric coolers, as it can quickly and effectively transfer heat.

5. What other materials are commonly used in thermoelectric series?

In addition to lead, other commonly used materials in thermoelectric series include bismuth, tellurium, and antimony. These materials also have high Seebeck coefficients and thermoelectric figures of merit, making them suitable for use in thermoelectric devices.

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