Copper and acidic wvo
- Thread starter Exekiel69
- Start date
I'd try to avoid it. Acid (FFA) of WVO is not really the issue. Any water in the WVO will cause the copper to oxidize. There is also considerable evidence that copper acts as a catalyst for polyerization of oil (sort of a linoleum like goo).
As a side note, copper tends to become less flexible, even brittle when heated. If you solder an in-tank copper heat exchanger make sure it is very well supported. If it cracks over time, you'll be dumping coolant in your tank.
As a side note, copper tends to become less flexible, even brittle when heated. If you solder an in-tank copper heat exchanger make sure it is very well supported. If it cracks over time, you'll be dumping coolant in your tank.
hheynow
the misanthrope
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I used aluminum tube for mine. Made from "versatube" aircraft aluminum fuel tubing, from Aircraft Spruce. Basically a loop with pieces of HDPE to support it off the bottom of the tank. It was aluminum brazed to the plate of aluminum that attaches it from the top of the tank. Been in place around 60,000 miles without problems.
Hey Richard, where did you get the Arctic Fox from? Thinking of putting one in the RV tank
Hey Richard, where did you get the Arctic Fox from? Thinking of putting one in the RV tank
96_Bear
Shane
93turbo_animal
Registered User
actually aluminums not much better then copper or brass its still a soft metal your safest bet is SS
Aric many guys use aluminum transmission coolers and seem to have good results, but I do agree with You that SS is much better, come to think aluminum is just as soft as copper when it comes to tubes.
Only problem I have is to find a source of SS that I can bend enough to make a heating coil out of it. Any tips on this one?
For now I have 3/4 copper and looks very clean, but as soon as i get a Chance i will replace with some SS.
Only problem I have is to find a source of SS that I can bend enough to make a heating coil out of it. Any tips on this one?
For now I have 3/4 copper and looks very clean, but as soon as i get a Chance i will replace with some SS.
93turbo_animal
Registered User
yea EZ aluminum is a little better then copper but like you said it is a soft metal and is not permitted in food industry applications for pumping VO thru. so if you want to not have to worry about your lines SS is the way to go. as for SS you can bend the only thing that comes to mind which is what I been considering is using 2 or 3, 3/8" lines to run the coolant thru with out having to worry about restricting flow cause you could just get SS brake line
I don't know where he got his, but this place has them for a pretty reasonable price http://www.greaseworks.org/index.php?module=pncommerce&func=categoryview&CategoryID=16
along with a lot of other nice veg heating goodies ( I made an electric band heater for a filter from one of their pad heaters, works great )
------------Robert
