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Aluminum Exhaust Hood

 
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Walts Malt



Joined: 27 Sep 2013
Posts: 95
Location: Farmington, MN

Drinking: Citra IIPA, Brown Ale, Brooklyn 1/2 Ale


PostLink    Posted: Mon Jan 19, 2015 2:51 pm    Post subject: Aluminum Exhaust Hood Reply with quote


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I wanted to go the route of the exhaust hood from Fast Kitchen Hood (like Kal's) for the "blingy" effect and known effectiveness. However, when I got a quote for almost $1,300 I began to think of alternatives. When I told my brother and his friend my dilemma, his friend said he could build one out of aluminum for me (works in a machine shop). Sounds like he can make it the size I need, with a channel to drain, and keep the cost pretty reasonable.

Any thing I should be concerned about in using Aluminum? Do you have a suggested minimum wall thickness for the aluminum?
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Castermmt



Joined: 03 Jan 2011
Posts: 864
Location: Lowell, In

Drinking: Steelhead Porter, Alt-Toids, Hefty-Weizen, Terry's Kolsch, African Amber, Pumpkin Ale, Double Dog Ale

Working on: Janet's Brown Ale, Terry's Kolsch, Pilsner


PostLink    Posted: Mon Jan 19, 2015 2:57 pm    Post subject: Reply with quote

You can use any material you want. It will never get hot because all it's doing is catching the steam so the fan can pull it out. Make sure you hook this dude up with some good home brew Mug
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Walts Malt



Joined: 27 Sep 2013
Posts: 95
Location: Farmington, MN

Drinking: Citra IIPA, Brown Ale, Brooklyn 1/2 Ale


PostLink    Posted: Mon Jan 19, 2015 3:51 pm    Post subject: Reply with quote

That's what I sort of figured. Just wanted to make sure there wasn't anything I was missing in relation to aluminum corroding.

Yeah, plan to hook him up with something as soon as the brewery is ready.
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J-Brosky



Joined: 14 Aug 2013
Posts: 8



PostLink    Posted: Tue Jan 20, 2015 6:56 am    Post subject: Reply with quote

If you see there is a lot of condensation forming on the inside surface you will eventually get some pitting of the aluminum, and a white corrosion product (oxide) will form given enough time. I would recommend applying a primer and enamel to the inside surface if you are at all concerned. Do you know what type of alloys your friend can get? Not all alloys are created equal. Different alloys and tempers will have different corrosion resistance properties.
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