Can anyone tell me what the coil is in the middle hot water heater, in the diagram? Is it copper, or brass?
President, VIP Recycling
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Can anyone tell me what the coil is in the middle hot water heater, in the diagram? Is it copper, or brass?
George Beale - Founder & President - info@viprecyclingjunkremoval.com
VIP Recycling Junk Removal LLC - Premier Scrap Metal, Junk, & Electronic Recyclers!
http://www.viprecyclingjunkremoval.com
Experienced Scrapper
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Yes look at other post.
Edit to add;
That coil is a heat exchanger. I would assume they are aluminum as it transfers heat much more efficiently then copper. So being the lowest value of metal,
according to you, it is a waste of time trying to get it out.
Last edited by injunjoe; 10-17-2011 at 09:01 AM.
When the white man discovered this country Indians were running it
no taxes, no debt, women did all the work.
White man thought he could improve on a system like this. - Old Cherokee saying
I did not surrender, they took my horse and made him surrender. - Lone Watie
President, VIP Recycling
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Thanks for the info on what the coil is. Ignore the rest of this post. I didn't realize you replied in the other thread.Originally Posted by injunjoe
Last edited by GeorgeB; 10-17-2011 at 09:05 AM.
Experienced Scrapper
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Brass is used because it is durable. So the connections would be brass but like I added above aluminum is much better for heat transfer.
Trane Corp. uses aluminum coils on evap. coils for efficiently transferring heat. Other companies are jumping on the bandwagon to meet SEER ratings.
Even if it was copper, it would take you half a day getting to it! Without the proper tools it would be like a monkey on a football!
President, VIP Recycling
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What do you consider to be the proper tool joe? I have a vast selection between my father in law and myself.
I figured it would be either copper or aluminum, since those are the 2 that are most commonly used. Brass is normally for fittings, but never know. People change things around all the time.
Aussie Scrapper
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Hmm, looks like 3 to 4 hrs work, just to rescue 3 lb of Al...?
"roaming the streets, looking for treats"
President, VIP Recycling
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You could be right. I think I will try it on the next one, just to see.
If it doesn't take to much time, I might do it continuously, but if it takes the time your thinking, then forget it.
The thermal resistance of copper is lower than aluminum as is its electrical resistance. This is the case with all precious metals. From lowest to best conductivity of heat and electricity; aluminum, copper, silver, gold, platinum. That is the scale of the precious industrial metals excluding high noble metal processes and alloys.
However Alum = cheaper than copper. People already pay 200-400 for a new heater. They dont want to make the price 400-600.
Experienced Scrapper
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It's just a waste of time as mentioned.
I doubt you will see any of these anyway! They are used in special applications, like solar and such. Don't be confused with one of these and just a tank with a drain!
Metal Recycling Entrepreneur
Most water heaters don't have those. I sell mine whole to a rebuilder in Mexico for $15 each.
Metal Recycling Entrepreneur
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I am only posting because I posted the other thread but I don't know sorry. I know more about the ones used for central heating and for hot water basically that are on walls.
Metal Recycling Entrepreneur
lowest to best is as follows: Thermal Conductivity - k - (Btu/(hr oF ft))
Platinum 42
Aluminium 118
gold 182
copper 223
silver 235
As you can see, platinum is abysmal
In heat transfer, the thermal conductivity of a substance, k, is an intensive property that indicates its ability to conduct heat.
Higher is better
http://hyperphysics.phy-astr.gsu.edu...les/thrcn.html
Material Thermal conductivity
[W/(m·K)]
Air 0.025
Wood 0.04 - 0.4
Hollow Fill Fibre Insulation 0.042
Rubber 0.16
Water (liquid) 0.6
Glass 1.1
Soil 1.5
Concrete, stone 1.7
Stainless steel 12.11 ~ 45.0
Lead 35.3
Aluminium 237 (pure) ~ 120—180 (alloys)
Gold 318
Copper 401
Silver 429
Diamond 900 - 2320
Graphene (4840±440) - (5300±480)
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