Quote:
Originally posted by Mr. Baz
Normal pelts will do great at 12v....however drift pelts have a max of 25v. This is why he is running it at 20v, where it should be kept for optimal performance.
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I know the specs for the Drift 0.8 pelts. I also know a bit about pelt operation.
The optimum operating point for the pelt is dependent on the performance of the hot side cooling system. It is not a fixed voltage like 20V.
Pelt cooling characteristics are very nonlinear, and they maintain substantial cooling capability to voltages (and/or currents) much lower than Vmax. See Figure 4 of
this document for an illustration of this.
The power consumption of (and heat dissipated by) the pelt goes up roughly as the square of the voltage. Above Vmax/2, the pelt's cooling ability is increasing less and less for each additional volt.
With an underperforming watercooling system and a 16 Amp powersupply, two Drift 0.8's connected in series for 12V apiece, is going to be much more optimal than two in parallel at 20V.