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Trying to seal a system containing ethanol. Answered

I'm putting the pipe system together for my solar thing, which needs to contain hot ethanol, not under significant pressure. What kind of sealant / adhesive can I use that won't dissolve in the ethanol? I'm gluing together mostly plastics like PVC, but also steel and aluminium.

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lemonie

9 years ago

You'd be better with copper and solder if you can do it that way.
Otherwise try something like this or JB Weld.
Hot ethanol and PVC may not get on too well, and jouning different materials that are going through hot and cold cycles with probably make it difficult what ever you use.

L

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SolarFlower_orglemonie

Reply 9 years ago

JB Weld looks like the win. managed to find one place locally has it. Cheers.

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PKMSolarFlower_org

Reply 9 years ago

I'm trying to fit together the pieces of all the questions you've asked about what you are trying to build- I take it it's some sort of solar-powered heat engine? Are you willing to post more about how far you've got, just to get a second pair of eyes looking for possible pitfalls or improvements? You can always PM if you're concerned about someone patent-poaching you, I'm just very interested in heat engines (and know a friend's dad who is an aeronautical engineer and hand machines Stirling engines, he can allegedly fix anything so might have some more valuable insight).

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SolarFlower_orgPKM

Reply 9 years ago

Intriguing, no? It's not a heat engine as such, it's a concentrator which would be plugged into an external device; Stirling, steam engine, water purifier, stove, etc. I've got all the materials I'm going to need, pretty much, which so far has cost me less than $50. And this is the prototype... I was planning on at least publishing the design here if and when I get it going, and eventually getting round to doing an instructable. The design will be open source, so patents aren't really an issue. Anything you can tell me about viable Stirling engines would be very valuable. I started out with that in mind but haven't managed to find anything currently available which would work. There are 1-2 kW high efficiency engines being produced (sunpower.com) but it doesn't seem like you can actually buy them just yet. Also I'm mostly thinking of this for the developing world, so have been thinking on easily fabricateable safe steam engines.