Question about a thermoelectric cooler (TEC) Why is it expected that one side has a greater...

Question about a thermoelectric cooler (TEC)

Why is it expected that one side has a greater difference from room temperature to the other?

In my experiment, there was a larger difference between the room and the cold block

Thanks

Expert Solution

Basically thermoelectric coolers operate according to the peltier effect. And as the effect says it will create a temperature difference by transferring heat between two electrical Junction. Here Due to the applied voltage , current flows through the Junction of of the two conductors, heat is removed at one Junction side and cooling occurs and heat is deposited at other Junction.

Now as we do this experiment in the room then, the two block of the thermoelectric cooler will create a hot and cold side and when we take a single stage thermoelectric cooler in our experiment then it would produce q maximum temperature difference of about 70° C which is comparably large to feel in a room so that, when we do this experiment we will feel the temperature difference pf about 70° C in between the room temperature and the cold block side.

Here when current passes through one or more pair of n to p type , then decrease in temperature at Junction feels which result in absorption of heat from the environment at the hot block side this heat is carried along the elements by electron transport and released on the opposite side as the electron move from high to low energy state.

genius_generous answered 2 years ago

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