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Temperature difference
versus current (DT
vs I)
shows dependence of
DT provided by TE module on current.
The curve has a maximim at Imax which is specified above.
Since operating at or very near the peak is relatively inefficient, most devices are operated somewhere between 40% and 80 % of
Imax.
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Heat pumping capacity versus temperature difference
(Qc vs DT)
shows direct dependence between cooling capacity and available
DT at various currents up to Imax.
If the required cooling capacity is known for a specific application then the plot allows
estimating available
DT at various currents.
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Voltage versus temperature
difference (U vs DT).
This plot demonstrates available
DT at applied voltage.
The plot allows a User to estimate power (current and voltage) if the required
DT is known.
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C.O.P. versus temperature
difference (COP vs DT).
The plot allows a User to estimate roughly
optimal DT to apply a TE module.
Once the three major parameters DT,
Th and Qc are chosen, one additional criteria is to be considered. It is Coefficient of Performance (C.O.P.)
The C.O.P. is given by :
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