Fermentation chamber options – homebrew academy gas efficient cars 2016


Most of the flavors that we’d consider “off-flavors” showed a moderate increase, but what was really startling was the increase in acetaldehyde, which gives beer that green apple flavor. Its concentration was 8ppm in the 66°F beer, but 152ppm in the 77°F beer. So a 9 degree increase in temperature, but the acetaldehyde was 19x higher!! Controlling Fermentation Temperatures

I’ve known for some time now that fermentation temperatures are important, but over the past year have realized just how important they are. gas vs diesel prices Examples like the one above, plus other information in this book, advice from other brewers, and most importantly, my own experience has taught me that if you want to make the best beer possible, you need to nail your fermentation temperatures.

The good news is that most of these flavors are produced during the first 72 hours of fermentation, so you don’t need to maintain the cooler temperatures the entire time the beer is in the fermenter. In fact, it is beneficial to let the temperature rise after fermentation so they yeast can fully attenuate and clean up some of those flavors produced during the height of activity.

Temperature control gadgets truly run the gamut in the brewing world. From a chilly corner in a homebrewer’s basement, to glycol cooling jackets on a commercial brewery’s stainless steel conical tank, to everything in between. electricity cost nyc When it comes to controlling temperatures, there is certainly more than one way to skin a cat, but I’m going to look at the most practical options for homebrewers. Swamp Cooler

The swamp cooler is one of the cheapest and easiest ways to cool your fermenter. There are a few different swamp cooler variations. Most consist of a container to hold water and require the brewer to continuously rotate frozen water bottles for cooling. A t-shirt over the carboy can be used to draw water up, and some people point at fan at the fermenter to get the evaporative cooling effect.

@John Yea if you have someone to help you the swamp cooler method can work really well. Sometimes I’m out of the house for 10 hrs at a time with no one to help so it becomes a problem. year 6 electricity assessment About your question, I think 70-73 is great for cleaning up the beer and you could probably go higher without having any ill effects. d cypha electricity futures That book I mention talks about letting the temp get up to the mid 70s for ales not only to clean up off flavors but to make sure they fully attenuate. For lagers I think they say let it go to 68F for the diacetyl rest. It’s the same idea though – warmer temps at the end of fermentation. Thanks for the comment.

@Jim Excellent point about all the different chest freezers you would need. That’s something I’ve been struggling with in my mind. electricity worksheets grade 9 Even for your ales that are fermenting, you’ll want your fridge at different temps depending on how far along the beer is. For one at high krausen you might want your fridge at 50F to combat the high temps but for a beer that has calmed down, 50F would bring it down too far. Ah decisions decisions…

@Brett So right about it always being a balance between money, time, and the fulfillment of DIY. gas yojana I think I saw a HBT thread about what you mentioned – basically expanding a fridge with an insulated box and using it for the cooling power. Another good idea, especially if you get a cheap (or free) mini fridge. Thanks for the heads up about the aquarium controller too, I’m gonna set aside some time to read through that thing.

Hey Billy there’s some pics here ( http://picasaweb.google.com/Bill.Muneio/SonOfAFermentationChiller?authkey=Gv1sRgCI_szvjH4deXEw&feat=directlink). It took me about 3-4 hours I guess, it’s pretty simple. I basically followed Mr. Schwartz’s plans the only thing I did different was instead of using dowels to hold the 2 removable panels in place I used some Velcro and nylon webbing, this seems to work pretty good it allows you to really cinch it up tight. I got most of the materials from Home Depot, but they only had 1 1/2″ sheets of foam so I glued that and a 1/2″ piece together to get the desired 2″ thickness also in addition to the adhesive I used some 3″ deck screws with fender washers to help hold things together (just tighten them lightly) I ordered this thermostat ( http://www.amazon.com/gp/product/B000WEOQ6I/ref=oss_product) from Amazon because I couldn’t find one cheap enough at HD and that should be here tomorrow hope it works? The fan I pulled from a dead PC. I think my total cost was about $60.