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Direct Ventilation Through Exterior Wall

 
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lebowski



Joined: 06 Sep 2014
Posts: 3
Location: Kentucky


PostLink    Posted: Thu Jul 19, 2018 1:36 am    Post subject: Direct Ventilation Through Exterior Wall Reply with quote


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Hey guys. I'm new to the forum but have slowly built my setup over the past few years. I've recently completed a 20'x16' "brew shed" and my current focus is on ventilation. The building doesn't have any interior walls and the brewery will be on the back wall. There is one 3'x6' sliding window on one of the side walls, the rest of the windows do not open.

I've researched ventilation before posting, but it seems this topic mostly involves basement setups. I'm wondering if anyone has built a ventilation system with no or very little ducting? I want to vent through the back wall of the building instead of the roof (I think it would look cleaner). It seems feasible but my biggest concern is fan placement. The roof is lean-to style, not gabled and the roof trusses are 16" tall. So the ceiling height is lowest at the back wall (still 8') but there is 16" inches between the ceiling and roof.

Supporting details.... I'm using Kal's 30a setup for 10 gal batches so thinking 350-400 scfm (but possibly less with minimal ducting?). Any guidance is appreciated!
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dp Brewing Company



Joined: 08 Jul 2013
Posts: 659
Location: Midwest

Drinking: Black Sheep NEIPA, Rye Not Today, Kick of the Irish

Working on: RIS Barrel Aged


PostLink    Posted: Thu Jul 19, 2018 12:24 pm    Post subject: Reply with quote

Welcome to the Forum Lebowski! Could you get us some photo's? I think that would be very helpful.
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kal
Forum Administrator


Joined: 12 Dec 2010
Posts: 10341
Location: Ottawa, Canada

Drinking: German Lager, Electric Hop Candy Jr, London Pride, Weizen, Citra DIPA, Dubbel, Russian Imperial Stout, Black Butte Porter

Working on: Kolsch


PostLink    Posted: Thu Jul 19, 2018 1:19 pm    Post subject: Reply with quote

Definitely! Post some photos so that we can see what you’re dealing with and we can figure out the best way to incorporate a fan. Cheers and welcome to the forum!

Kal

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My basement/bar/brewery build 2.0
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Biglakehomebrewer



Joined: 11 Feb 2018
Posts: 13
Location: Big Lake, mn


PostLink    Posted: Thu Jul 19, 2018 2:40 pm    Post subject: Reply with quote

Have you thought about just going the steam condenser route? I've gone back and forth on building the vent hood and all that or going steam condenser route. There are pros and cons to each setup, but its another avenue to consider.
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lebowski



Joined: 06 Sep 2014
Posts: 3
Location: Kentucky


PostLink    Posted: Fri Jul 20, 2018 2:38 pm    Post subject: Reply with quote

I'm going to research both methods and determine how I would implement each to see which is most feasible for my setup. The biggest negative I see for traditional ventilation in a small conditioned space is make-up air. On the other hand it appears the steam condenser uses quite a bit of water (and I'm seeing claims of insufficient boils, although I haven't gone down that hole yet). I do like the idea of one less hole in the wall though.

Here are some pics of the shed. The outside is finished and we are in the process of running electrical (as you can see from the trench). The plan is to place the brew table where the kegs are sitting in the second picture. I'm open to any suggestions or ideas!





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McGruber



Joined: 12 Aug 2014
Posts: 231
Location: Idaho


PostLink    Posted: Mon Jul 23, 2018 5:15 pm    Post subject: Reply with quote

Awesome brew shed! Not sure if it will work for your layout, but I had the same issue (not wanting to create more holes) and I opted to just go out my existing sliding window.

http://www.theelectricbrewery.com/forum/viewtopic.php?p=313865#313865
Images at top of second page
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GrumpyWally



Joined: 06 Mar 2015
Posts: 58
Location: San Diego, CA

Drinking: California Common, Schwarzbier, Roggenbier, Tripwire Tripel, Dubel, 2 Brown Porters

Working on: Tripwire Tripel, California Common


PostLink    Posted: Tue Jul 24, 2018 6:24 pm    Post subject: Reply with quote

I have a slightly different situation - especially wrt make-up air and temperature control (I live in San Diego, not Kentucky). My most pressing need was to deal with exhausting hot air and avoiding condensation. My brewery is in a long narrow room that was carved out of the end of the garage, but was kind of limiting with room for a hood and a sloping ceiling at the only end where I could run the exhaust. A couple pictures show inside and out views of what I did.

As you can see, I choose to only directly exhaust the BK. The fan is the same one as Kal recommends. This setup does a good job of pulling moist air out - I do not get any condensation in the "bowl" that serves as the hood. I do get a lot of water out of the fan - you can't see it, but I drilled a hole in the bottom of the fan housing and inserted a drain nipple with a hose that drains back into the sink. Also note the extra tape around the seam in the fan housing. I do get condensed moisture at the outside exhaust port.

The screen door serves as the primary air replacement port, but since it is pretty close to the fan exhaust hood I do get some amount of "suck back".

Hope this helps.



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DFB



Joined: 03 Aug 2019
Posts: 7



PostLink    Posted: Mon Nov 11, 2019 8:51 pm    Post subject: Reply with quote

Old thread but my current question... My kettles and hood (planning to order one from fastkitchen) are against an exterior wall in our basement. I'd like to just vent this directly outside but this would make for a run so short that I don't know if I could get the fan into the run. Anyone else already do this?
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kal
Forum Administrator


Joined: 12 Dec 2010
Posts: 10341
Location: Ottawa, Canada

Drinking: German Lager, Electric Hop Candy Jr, London Pride, Weizen, Citra DIPA, Dubbel, Russian Imperial Stout, Black Butte Porter

Working on: Kolsch


PostLink    Posted: Mon Nov 11, 2019 10:14 pm    Post subject: Reply with quote

DFB wrote:
Old thread but my current question... My kettles and hood (planning to order one from fastkitchen) are against an exterior wall in our basement. I'd like to just vent this directly outside but this would make for a run so short that I don't know if I could get the fan into the run. Anyone else already do this?

Not a problem. My kettles and hood are also against the exterior wall.

Put the vent hole in the ceiling of the hood (over the boil kettle is recommended) and then have a 90 degree elbow followed by the fan and a few feet of ductwork. If you have to run the fan/duct along the hood before turning 90 degrees and going out.

Kal

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