About this project
Create Commercial Quality Craft Beer Fermentations
From the makers of the BrewJacket Immersion comes Immersion Pro, now including the ability to heat:
Immersion Pro provides a commercial grade environment for your home brewed craft beer. By seamlessly warming or cooling your freshly brewed wort, Immersion Pro gives yeast the perfect environment to produce flawless craft beer without bulky equipment like refrigerators, external thermostats, or heating wraps. Immersion Pro's solid state heat exchange engine can maintain your ferment to 0.5º F of your set temperature, and warm or cool your fermenting beer to 35º F above or below the ambient temperature in your house or small brewery. Just set the optimum temperature for your yeast, and Immersion will meticulously maintain it for as long as the unit is plugged in.
Immersion Pro utilizes a patent pending solid state heat exchange engine that can move heat into or out of your fermenting beer on the fly. This means you just set the temperature at which you want to ferment, and Immersion Pro takes care of the rest. You no longer have to find the coldest closet in your house in the peak of the summer, or the warmest nook in your living room during the winter, or sacrifice space in your kegerator to lager your next batch and serve 50º F kegs.
Immersion Pro manages the fermentation temperature of your homebrewed craft beer. Temperature management is one of the two critical components of the cold side of brewing (the other being sanitation). As brewers we spend the vast majority of our active brewing time on the hot side: developing the grain bill and hop schedule, mashing, and boiling. We often ignore the role yeast have to play in our beer because we don't have the space or the right combination of bulky equipment to provide them with the correct environment to transform your hard work into delicious craft beer.
Yeast will make or break your beer. You could have brewed your wort to absolute perfection, but if your ale yeast needs to be between 65º and 68º and your house happened to 70º, a plethora of defects will form that make your beer taste more like homebrew than quality craft beer. According to Dr. Chris White and Jamil Zainasheff, authors of Yeast: The Practical Guide to Beer Fermentation, “One of the greatest things a brewer can do to improve his beer is manage the fermentation temperature. This is far more important than using fancy fermentors or even all-grain brewing."
We talked with two homebrewers turned professional at two of Colorado's best breweries, Avery Brewing and Boulder Beer. We asked them what their brew setups looked like before they went pro and what they lessons they learned professionally that they could apply to homebrewing to make their homebrew taste more like professionally produced beer.
While Immersion Pro solves the problem of cold side (fermentation) management, it is no substitute for correct brewing hot side brewing procedure, such as mash temperature, hop scheduling, oxygenation of your wort, and of course, proper sanitation.
Tech: Solid State Heat Transfer
Since Immersion Pro is solid state, the only moving part is the fan. No glycol, no pumps, no heating wraps, no bulky external controllers, no refrigerators. This means the device is incredibly small and can fit into any spare place in your house, and has an incredibly long life expectancy.
Immersion works by moving heat electrically. It utilizes thermocouples wired together in a tight package (called a thermoelectric chip) to move heat in the direction of the electrical current. For the original Immersion, we hard coded this direction and only allowed the current to move from left to right, causing heat to move out of your beer, through the rod, and out the heat sink on the top of the device.
For Immersion Pro, we are adding a voltage direction regulator called an H-bridge that allows us to control, in real time, which way the voltage flows: either left to right (cooling) or from right to left (heating). When the current moves from right to left, we are able to pull heat from your ambient environment into the heat sink, push it into the rod, and allow it to gently warm your beer. When your set temperature is achieved, Immersion Pro reduces the current flow and waits until your beer needs to be warmed (or cooled) again.
Immersion Pro works with just about every fermenter capable of fermenting less than 30L / 8 gallons, including conicals and 5 gallon cornelius (corny) kegs. The only fermenters incompatible with Immersion are those larger than 8 gallons, and small necked glass carboys since their opening is simply too small to fit Immersion Pro's heat transfer rod.
Immersion Pro comes with two jacket options, one for flat bottom fermenters (buckets and PET carboys), and one for fermenters with legs (conicals). Just select the jacket style that matches the fermenters you would like to use with Immersion in the rewards section.
For most fermenters, some part will need to be drilled for either the rod or for air release. We have a number of videos and walkthroughs describing how to do this. If you prefer not to drill your own lid, have no fear! We have a plethora of drilled lids in our web store, and as a backer, we will give you a free shipping code upon the successful completion of the campaign so you can add whatever lid or drilled fermenter you wish to be shipped with your Immersion Pro.
Original Immersion Upgrades
We love our original Immersion owners and kickstarter backers. Their support has helped us get to where we are today, and without them, we simply would not be here. As a special thank you, we are offering all functionality of Immersion Pro at a fraction of the cost with a discounted control board upgrade exclusively through this Kickstarter campaign. If this campaign is successful, this upgrade will be available on our website, but it just won't be so darned cheap.
What's in the box?
Immersion Pro Rewards
- Immersion Pro Unit with selectable temperature format (F and C)
- Anodized Heat Transfer Rod
- Insulated Jacket for Carboys/Buckets or Conicals
- Drilled Stopper, sleeved grommet, one-way co2 release valve (all the hardware you need to adapt your own fermenter, minus the drill bit)
- Universal Power Supply (CE / UL): 100v-240v, 50/60hz with cord for the country Immersion is being shipped to. If you need a different style cord, please just email us
- Getting Started Guide
Learn to Brew Kit:
We are offering a reward level for those who want to get into homebrewing, but don't have any of the equipment. You receive everything from the Immersion Pro reward above, plus the following:
- 1x Homebrewing Starter Kit (includes fermenter, bottling bucket, tubing, syphon, bottle caps, sanitizer, spoon)
- 1x Pre-Drilled Lid
- 1x Ingredient kit of your choice for 5 gallons of beer (over 35 kits to choose from, including kits from Rogue Brewing and Heavy Seas). These kits include very detailed instructions to ensure a your first brew day goes off without a hitch. You will choose your recipe kit after the kickstarter ends.
BrewJacket was formed in 2013 by three grad students at Cornell University in Ithaca, NY. Over the course of 2013 and 2014, the original BrewJacket Immersion took form after countless late nights, 3D prints, hardware iterations, from proof of concept into a real, functioning product.
Who We Are
Aaron began homebrewing while an undergrad at The University of Georgia in 2005. While living in Atlanta, GA he was faced with a small apartment and hot summers that make even saisons hard to ferment. It was here that the concept of the original BrewJacket Immersion was born. In 2012 he moved to Ithaca NY where he attended Cornell University and met Matt and Evgeniy. He graduated in 2014 with an MBA and moved to Boulder Colorado where he is now running BrewJacket, Inc. Aaron is the firm’s Chief Executive Officer.
Matt encountered Aaron during an entrepreneurship class at Cornell where he let Aaron talk him into pulling all nighters to create a business. Matt, lover of beer, was convinced and became the firm’s Chief Technical Officer. Matt recently finished his PhD in Biomedical Engineering at Cornell University and is a new dad.
Having known Matt from Cornell, Evgeniy shares the same love of beer as is expected from a true Russian. Evgeniy decided to bring his experience as a mechanical engineer in Texas to BrewJacket in hopes of brewing the perfect beer. In his spare time, Evgeniy enjoys trying new beer, learning about everything, and being a nerd. He is the firm’s VP of Engineering.
Risks and challenges
We at BrewJacket have learned a lot about manufacturing products since our first successful Kickstarter campaign in 2014. Over the past two years, we have rigorously developed a robust supply chain for producing the original Immersion, and since 2014, we have successfully built 10 unique batches of Immersion and have settled on a very high quality and well vetted group of component suppliers that we will be using for Immersion Pro.
Producing Immersion Pro will require 3 new components over the original BrewJacket Immersion, which is a device that contains 50+ unique components. The first new component will be a revised circuit board to be produced in mass and, like any new component, there is possibility for error. Since the chipset change will be relatively minor and the majority of the changes occurring in software, the biggest risk is our revised chipset will not perform as intended when we receive our first small batch output from our printed circuit board producer. If this happens, we will have to revise the chipset and produce again.
The functionality we are introducing into the new chipset (H-bridge real time voltage routing) is not new in the world of electronics and there is a well established body of knowledge around chipset designs that utilize this. Our Kickstarter campaign has budgeted multiple rounds of prototyping into the budget so the risk of us not being able to make this small alteration to the chipset is extremely low.
The second and third new components are two new plastic injection molds that will enclose the new circuit board. Adding the voltage redirection circuit will require us to expand the board dimensions slightly causing the current injection mold for the circuit board to be incompatible with our current design and will therefore need new molds. We have learned a lot about plastic injection mold design from our previous kickstarter campaign and we anticipate few issues arising from the new molds. However if issues do arise, the physical nature of altering these molds can push our delivery dates back considerably. As such, we have added an additional funding requirement to our campaign minimum to ensure we are properly resourced to undertake this task.Learn about accountability on Kickstarter
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