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Which direction to coil your Herms coil?

 
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milldoggy



Joined: 23 Dec 2010
Posts: 570
Location: Pottstown, PA


PostLink    Posted: Wed Jan 19, 2011 7:10 pm    Post subject: Which direction to coil your Herms coil? Reply with quote


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Counter clockwise or clockwise in the northern hemisphere? For some reason I thought I read somewhere that it should be clockwise for northern hemisphere. I really doubt it matters.
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crush



Joined: 28 Dec 2010
Posts: 709
Location: Telemark, Norway


PostLink    Posted: Wed Jan 19, 2011 10:13 pm    Post subject: Reply with quote

Hehe! This one always makes me smile! Water flowing clockwise or counterclockwise in different hemispheres is an urban myth. I think Mythbusters or some similar program disproved it, and here's a description - http://www.loc.gov/rr/scitech/mysteries/coriolis.html. Basically its about how the water is introduced to the drain that determines the rotation.

In a coil, water will want to move downwards with much greater force than it will rotate, so the direction doesn't matter - choose whichever is most natural/easiest for you to coil.

Hope this helps!

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kal
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Joined: 12 Dec 2010
Posts: 10133
Location: Ottawa, Canada

Drinking: German Lager, Electric Hop Candy Jr, Scottish 70/-, Cali Common, Maibock, Helles, Russian Imperial Stout, Black Butte Porter

Working on: Weizen


PostLink    Posted: Thu Jan 20, 2011 2:42 am    Post subject: Reply with quote

Yup, definitely in the "doesn't matter" category. Nobody drinking your beer a few months later will comment "This is great beer but when it was mashed, did it get passed through the HERMS coil clockwise instead of counter-clockwise? I think I can taste it...".

Kal

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kal
Forum Administrator


Joined: 12 Dec 2010
Posts: 10133
Location: Ottawa, Canada

Drinking: German Lager, Electric Hop Candy Jr, Scottish 70/-, Cali Common, Maibock, Helles, Russian Imperial Stout, Black Butte Porter

Working on: Weizen


PostLink    Posted: Thu Jan 20, 2011 2:43 am    Post subject: Reply with quote

Now that I think about it more, if it did matter, just inverse the hoses to the HERMS coil. The beer will flow in the opposite direction. So how you coil it doesn't matter.

I highly suggest making two batches of the same recipe and testing both ways to see which tastes better. Wink

Kal

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ajt012



Joined: 21 Dec 2010
Posts: 54
Location: Miami


PostLink    Posted: Thu Jan 20, 2011 3:14 am    Post subject: Reply with quote

i know i saw a picture of it somewhere, but which way does the wort travel in the coil? as in does it enter through the bottom and exit the top, or is this another issue for the "doesn't matter" bucket?
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kal
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Posts: 10133
Location: Ottawa, Canada

Drinking: German Lager, Electric Hop Candy Jr, Scottish 70/-, Cali Common, Maibock, Helles, Russian Imperial Stout, Black Butte Porter

Working on: Weizen


PostLink    Posted: Thu Jan 20, 2011 3:23 am    Post subject: Reply with quote

On my setup it enters from the bottom and goes to the top, against the flow of the hot water for max heat transfer. It likely doesn't mater.

Kal

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milldoggy



Joined: 23 Dec 2010
Posts: 570
Location: Pottstown, PA


PostLink    Posted: Thu Jan 20, 2011 4:19 am    Post subject: Reply with quote

but is that counter clockwise or clockwise Smile

I figured this was a myth and I would get some good responses!
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crush



Joined: 28 Dec 2010
Posts: 709
Location: Telemark, Norway


PostLink    Posted: Thu Jan 20, 2011 8:59 am    Post subject: Reply with quote

We need two HLTs, one clockwise and one counterclockwise with their coils connected to eliminate any negative effects of these mysterious Coriolis forces. I've added one to my order. $400 for another boilermaker is a small price for for peace of mind.
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ajt012



Joined: 21 Dec 2010
Posts: 54
Location: Miami


PostLink    Posted: Thu Jan 20, 2011 3:28 pm    Post subject: Reply with quote

*LIGHTBULB* use a 100ft coil, coil 50' of it going clockwise, then have it dip back down to the bottom of the coil, and coil it again counter clock wise! No need to buy a second HLT, and your beer will be the best tasting in the land!
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milldoggy



Joined: 23 Dec 2010
Posts: 570
Location: Pottstown, PA


PostLink    Posted: Thu Jan 20, 2011 3:47 pm    Post subject: Reply with quote

I think that would confuse the wort. You might have the best or the worst. I would think you need to swivel half your yeast counter clockwise and the other half clockwise, if you use dry, your screwed.
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