Quote:
Originally posted by Cathar
The peltier was driven off the 12V rail from the PSU. Now this isn't exactly best for the peltier as it's rated for 24W, so essentially the peltier is running at half capacity.
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No, no, NO.
A TEC running at half Vmax is running at substantially more than half capacity and is running vastly more efficiently than one powered at Vmax. (In terms of cooling vs Watts dissipated in the TEC.)
Read
this document.
I'm jumping on you Cathar, because I know you can understand this document, and when you do, you'll be effective at conveying the relevance of it. (Although your experiment has already helped to demonstrate this.)
I'm very seriously considering a chiller based on four 172 Watt TEC's running at 6V each, and before you say that's too expensive, consider the cost of the powersupply and kilowatt hours involved.