How to Select Thermoelectric Semiconductors

1. When selecting an appropriate thermoelectric semiconductor, you will find information below in any module specification

Maximum Voltage: Vmax(v)  l  Maximum Current: Imax(A)  l  ㅿTmax(℃)  l  Maximum heat pumping capacity: Qmax(W)

2. Specification Details

   ① Maximum Voltage : Vmax(v)

-Maximum voltage refers to a voltage at which the cooling efficiency of a thermoelectric module reaches maximum.

   ② Maximum Current : Imax(A)

-Maximum current refers to the flow of electric charge at the voltage where the cooling efficiency of a thermoelectric module reaches maximum.

   ③ Maximum Temperature Difference : ㅿTmax(℃)

-Refers to a temperature difference between cooling part and heating part when a thermoelectric module utilizes maximum efficiency.

   ④ Maximum Heat pumping capacity : Qmax(W)

-Refers to the maximum amount of heat that can be transferred when a thermoelectric module exerts maximum efficiency, or when the temperature differential(ㅿT) between the cold and hot module faces is zero . This maximum capacity, is expressed in W(J/sec).

1. The above maximum capacity is reached at maximum voltage. Therefore, with low-voltage electricity, the amount of heat pumped will decrease accordingly.

1. Select an appropriate thermoelectric module by calculating the amount of heat emitted from a desired cooling plate or chamber, or the amount of heat input from the surroundings.