Chris Jones wrote in news: snipped-for-privacy@corp.supernews.com:
The main thing is that not all posts propagate to all people, so anything that looks like a possibility they didn't can be frustrating. Acknowleging one shows a chain of events that rules that problem out neatly.
Fair. My point was a sort of thin joke really, on the face of it a small Peltier is actually good, it locks down the water in a separate location, avoiding the need to use vacuum to constantly draw vapour out to maintain low pressure. The joke is that to do that with any strong effect, the secondary (entirely unwanted) effect is to cool the entire setup. Although I guess you could pass the hot side waste heat back to the transformer somehow. Pointless complexity, perhaps...
Sometime I ought to get one actually, my old fridge compressor is a tad crude. Thing is, while you might easily put a vaccuum pump into service to dry something in a sealed chamber, it's only easy from the standpoint of pressing into service a bit of kit that is already there. Analogy: It's easy to use a car to get the shopping done, unless you have no car, in which case it's far easier to carry the shopping than to buy the car.
Agreed. I see no problem with 105°C on toroidal transformers. I let it go at 80 because it will work, and it's just below a much lower risk standard rating. The only part I can imagine might protest at 105°C is the little PVC sheaths on the wire ends. And maybe the sticky tape that stops the outer tape unwinding.