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Brewing Topics => Professional Brewing => Topic started by: Beeradley Ales on March 12, 2016, 06:37:29 PM

Title: Pacific Brewing Systems Tech 5BBL Profile
Post by: Beeradley Ales on March 12, 2016, 06:37:29 PM
Hi, just wondering if anybody has created an equipment profile for a PBST 5BBL 2-vessel electric brewhouse.

I'll be using a Grainfather for trial batches and scaling the recipes up to the 5BBL production system. So I have made an attempt modify the BS Grainfather profile with the values that I think I can work out, but am open to input from anyone with experience on either pieces of equipment.


Cheers
Brad
Title: Re: Pacific Brewing Systems Tech 5BBL Profile
Post by: brewfun on March 12, 2016, 09:28:28 PM
Hi, just wondering if anybody has created an equipment profile for a PBST 5BBL 2-vessel electric brewhouse.

I've calibrated a PBST 15 bbl steam brewhouse. Here's how I calibrate systems of any size.

If you want to scale recipes for evaluating cost, I suggest making a profile that is a "Design Frame." That is, a profile that has no losses or expansion factors, only the total post boil kettle volume you expect, plus 10%. The frame now gives you an estimate with a 10% margin of error. You'll be a lot less frustrated if you wait to calibrate your brewhouse until you get it. If you can buy or borrow a flow meter, it'll be quicker or more accurate. Otherwise, you'll need to make a dipstick for the kettle and another for the MLT.

My experience with PBST equipment is:
5 to 7% Trub loss at the racking port.
25% headspace in the kettle.
Heat surface area is designed for evaporation around 5%/hr.
You'll want to put an offset on the stack so that condensate is captured by the stack ring.
You'll also want a fan on the stack, for both safety and reliable evaporation.

If you know the btu rating of the heat stick, you can calculate your boiloff. Each liter will need around 55 btu to stay at boiling. Each liter of steam is about 2200 btu.

You'll want to do a couple of water batches to calibrate volumes and flow rates. During these, you can boil for an hour to get your evaporation, measure losses and see temperature fluctuations. Then it's just a bit of math to figure out how long each process is and how to be ready for it.

For the first batch, I recommend you plan a basic 12 to 14 P recipe you've brewed many times and know how it's supposed to taste. Light to moderate hopping will allow maximum yield, so you can gauge recipes from that.

Once you have the data from the water batches and the test batch, you can put together an accurate equipment profile in about 10 minutes. 
Title: Re: Pacific Brewing Systems Tech 5BBL Profile
Post by: Beeradley Ales on April 11, 2016, 02:09:49 AM
Cheers brewfun! That's very helpful stuff.

B