Thermoelectricity Concept

Demonstrations in Thermoelectricity

Lecture bench setup with two simple thermocouples connected through a switch and shunt to a laser galvanometer mounted on a stand, with a projection surface visible at left
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Simple Thermocouples

Demonstrates the Seebeck effect: heating a thermocouple junction generates an EMF, shown as a deflection on a laser galvanometer. Students observe direct conversion of thermal energy to electrical energy and …
Two photos: Top shows the thermocouple magnet mounted on heavy ring stands with a stack of 2 kg weights hanging from the armature and a bench torch positioned nearby. Bottom shows a close-up of the copper bar and torch heating area with a University of Colorado inventory label.
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Thermocouple Magnet

A thermocouple heated by a torch and cooled by running water generates enough Seebeck-effect current through a coil to magnetize an iron core and support up to 10 kg of …
Two photos: Top shows close-up of the Peltier apparatus on a lab jack with thermometer wells and an analog projection thermometer. Bottom shows the full setup with battery eliminator at left, Peltier device on lab jack in center, and overhead projector at right.
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Peltier Effect Apparatus

Demonstrates the Peltier effect: current through a thermoelectric junction produces simultaneous heating on one side and cooling on the other. Projection thermometers show the temperature divergence in real time. The …
Battery eliminator (left), bench switch (front center), series thermocouple set, and laser galvanometer with vertical mirror assembly (right)
Safety

Thermocouple Peltier Effect

Demonstrates the Peltier effect using 8 iron-German silver thermocouple junctions in series. Driving ~15 A through the set for 45 seconds creates a temperature difference between alternating junctions; switching to …