Quote:
Originally Posted by rcheshire
Brett. If your cooling fan exhaust temperature is within 10C of ambient your TEC heat sink combo is doing very well. If not bump up the heat sink and/or fan if necessary.
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Yep, figured something like that out. When I first ran it without fan the temp sensor started 'bumping' up and down as the heat wasn't being dissipated fast enough and was leaking back across the TEC. Swings of 5* or so over 10 sec intervals.
The formula is to have quite a smallish internal cold block and a larger heat siphon type CPU sink with fan on the outside. I have plenty of choices for both from scrapped PC's at work. I may buy a couple more TECs so I can fiddle around some more.
Better head round to the scrap trolley and see whats waiting for me
