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hopcat
Joined: 10 Mar 2019 Posts: 2
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Link Posted: Mon Mar 11, 2019 11:01 am Post subject: ULWD elements |
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Hi all,Just want to ask what is the definition of ULWD.I am fitting a new element in a pot for a friends build,the element is 14w per cm2,all stainless ripple element,is this going to be a problem of scorching.I have a Camco in my boiler and had no issues,apart from the rust on the thread,to which I put an anode in the pot.Your help would greatly be appreciated
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kal Forum Administrator
Joined: 12 Dec 2010 Posts: 11121 Location: Ottawa, Canada
Drinking: Pub Ale, Electric Creamsicle, Mild, Pliny the Younger, Belgian Dark Strong, Weizen, Russian Imperial Stout, Black Butte Porter
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hopcat
Joined: 10 Mar 2019 Posts: 2
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Link Posted: Mon Mar 11, 2019 12:39 pm Post subject: |
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Thanks for your quick reply.So would you say 14w per cm2 is going to be problematic for him.I know my Camco is 6.7 kw.I don’t want to dissapoint him and fit it to find scorching.
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kal Forum Administrator
Joined: 12 Dec 2010 Posts: 11121 Location: Ottawa, Canada
Drinking: Pub Ale, Electric Creamsicle, Mild, Pliny the Younger, Belgian Dark Strong, Weizen, Russian Imperial Stout, Black Butte Porter
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Link Posted: Mon Mar 11, 2019 12:57 pm Post subject: |
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That's not a question that can be answered I'm afraid. It depends on many other factors like how clean he keeps the element, what sort of beer he brews, how he brews/what he adds to the boil as it's ongoing (i.e. dumping in sugars or extract), etc. The lower the watt density the less prone you are to having issues, so that's why I always recommend ULWD. ULWD elements are also less likely to be damaged if dry fired.
Just like undoing your seatbelt in the car doesn't mean you'll immediately crash into a wall, using a high density element doesn't mean you'll immediately scorch your beer or have other issues. There are many brewers that have been brewing electric for years with higher watt density elements without any issues, but that doesn't mean it's the safest or best solution. If he keeps the element very clean between brews (looking like new) and is careful when adding things to the boil and does it slowly/carefully (like sugar or extract), doesn't try to boil something with the consistency of syrup, and never dry fires the element, he'll most likely be fine.
Rust is a completely separate issue. Most "regular" elements have an iron base that rusts so using a sacrificial anode like this one in the kettle is recommended: http://www.theelectricbrewery.com/sacrificial-magnesium-anode
Our ULWD elements have a stainless steel base that does not rust so an anode is not required. Our elements are here: https://shop.theelectricbrewery.com/collections/heating-elements
If building from scratch, once you factor in the added cost of an anode (never mind the extra work and tools required to punch a hole and install it) it doesn't really make sense to *not* go with an ULWD element. Given that he already has the non-ULWD element, the choice is completely up to him how he wants to go.
Good luck!
Kal
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