Thermoelectric cooler key parameters
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This document discusses key parameters of thermoelectric coolers (TECs) such as maximum temperature difference (dTmax), maximum heat pumping rate (Qmax), and how they are regulated by applied electrical current. TECs operate as heat pumps that transfer heat from a cold to a hot side. The maximum performance specifications are obtained without any external heat load, while in applications the operating point is between maximums depending on the heat load and percent of maximum current supplied.
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Thermoelectric cooler key parameters
- 1. Copyright TEC Microsystems GmbH. Images contain hidden watermark. How does It work - TE Cooler Key Parameters TE Cooler operates as a Heatpump. It transfers the Heat from Cold side to Hot Side and provides dT if required P P P P P P P Thot Tcold Heat Absorbed Heatsink Heat dissipated Object to be cooled dTmax Qmax Imax Umax Max possible temperature difference between Tcold and Thot Max amount of Heat TEC can pump from Cold Side Power Supply Parameters to get Max Performance values
- 2. Copyright TEC Microsystems GmbH. Images contain hidden watermark. Understanding TE Cooler General Parameters, dTmax and Qmax 0 10 20 30 40 50 60 70 Qmax dTmax TemperatureDifferencedT,K 0 Operating point Application Heatload dTmax for TEC is specified without Heatload. Qmax is specified at dT=0. The application point is in between. Sample performance chart for a single-stage TEC type
- 3. Copyright TEC Microsystems GmbH. Images contain hidden watermark. TEC is DC Current regulated Device TEC Cold Side Temperature and Cooling Capacity in Application are regulated by applied electrical DC Current 0 10 20 30 40 50 60 70 Application Heatload Required dT 100% Imax 80% Imax 60% Imax 40% Imax Temperature DifferencedT,K Qmax Example values for 1-stage TEC in room conditions dTmax