THERMOELECTRIC CALCULATOR

TEC Performance Lab

Estimate cooling power, electrical input, heat rejection and COP across a temperature differential.

Steady-state model

INPUTS

Module and drive

Example preset

Datasheet values

Q_max

ΔT_max

I_max

V_max

Datasheet hot-side temperature

°C

Drive mode

Target electrical input

Current is calculated for every ΔT and capped at I_max.

Hot-side boundary

Hot-side temperature

°C

Derived model parameters

Seebeck coefficient α: —
Electrical resistance R: —
Thermal conductance K: —

OPERATING POINT

20.0 K temperature differential

Cold — → Hot —

Cooling power — Q_c

COP — cooling / electrical

Electrical input — P_in

Heat rejected — Q_h

Current — I

Voltage — V

PERFORMANCE CURVE

Cooling and efficiency versus ΔT

Cooling power COP

No-load crossing —

Peak cooling on curve —

Peak COP on curve —

MODEL

What is being calculated?

Q_c = αIT_c − ½I²R − KΔT V = αΔT + IR COP = Q_c / P_in Q_h = Q_c + P_in

The calculator derives effective α, R and K values from Q_max, ΔT_max, I_max, V_max and the datasheet hot-side temperature. It is an engineering estimate: real modules vary with temperature, mounting pressure, thermal interfaces and manufacturing tolerances.