| Electronics > Projects, Designs, and Technical Stuff |
| Device that circulates mineral oil and cools it? |
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| CatalinaWOW:
You can always up your forced air game by chilling the air. TE Cooler or conventional air conditioning. Delta T always talks on heat transfer. Lots of cost relative to your heater, but far less trouble than oil or OMG fluorocarbon fluids. |
| james_s:
You're expecting too much from a cheap Chinese toy. If the caps are getting too hot with forced air then they are being overloaded and will not last long no matter how you cool them. Either mod that unit or build your own from scratch using high quality film capacitors and appropriately beefy mosfets or IGBTs. You can't polish a turd. |
| coppercone2:
yes, if you look at pictures of professional induction heaters, they have MASSIVE banks of foil capacitors. There are some pictures on this forum, I mean like a (Fairly) small PCB connected to capacitors mounted to thick anodized aluminum plates (for mechanical stability AND current handling). Like red bull cans. |
| Berni:
--- Quote from: Plasmateur on April 13, 2019, 01:51:10 am ---Hey thanks everyone. It appears forced air is probably going to be the best way to go then. But then I'll probably have to mod the induction heater by switching out the caps. The heater is here: https://www.amazon.com/Yosoo-Voltage-Induction-Heating-12V-48V/dp/B01C70G7Y8/ref=sr_1_4?keywords=induction+heater&qid=1555120176&s=gateway&sr=8-4 Those caps get super hot, and I don't feel like forced air is going to do the trick since I'm going to have to run this over some length of time. --- End quote --- You can always get a 10 000rpm high power server fan. Those things can almost take off verticaly with how much air they push (Tho they tend to be 4 times the weight of a normal fan so they dont). Im pretty sure that would force quite bit of air between those caps. And the caps used there are actually the good kind of caps for induction heating. The massive currents required trough them would cause a lot of typical foil caps to catch fire. You ether need more of these smaller caps to reduce the ESR even more or get a proper capacitor designed for induction heating. such caps are flat in construction and have massive copper terminals on each end to bolt onto a bus bar. One of those proper caps new likely costs about 10 times what your entire induction heater kit cost hence why the real deal capacitors are not used. But you can probably find one on the used market. |
| OM222O:
--- Quote from: james_s on April 12, 2019, 10:21:54 pm ---Plastic tubing works fine, metal is conductive and glass is brittle, it doesn't seem very practical to be running fragile glass tubes full of water around electronics. Cars and trucks use rubber hoses for cooling water without big issues so long as it is maintained. --- End quote --- plastic reacts chemically with mineral oil and breaks down. there are purpose built rigid tubes such as copper and glass which you cut down to size for this application. I'm not quite sure what it has to do with copper being conductive or glass being too brittle? this is the standard method used for years in the PC industry |
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