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Type: Posts; User: dick murton

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  1. Replies
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    Although CO2 in high concentrations might kill...

    Although CO2 in high concentrations might kill the yeast as it would most living organisms (obligate anaerobes perhaps not) I don't think that is your problem. Think about it. How may bottle...
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    A bit slow to respond, but the simple answer is...

    A bit slow to respond, but the simple answer is no. I've not seen anything published, though admit to not having searched, and have never looked into it on my own behalf - I wouldn't have made a...
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    OK - third attempt - when I calculated the grams...

    OK - third attempt - when I calculated the grams / kg / tonnes I still got a silly figure. 1.048 gives a far more sensible result - 1200 g.

    Shame my brain obviously isn't working - and no, I'm...
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    Aha - put in 1048, when I put in 48, it gives...

    Aha - put in 1048, when I put in 48, it gives 1.175 kg - far more sensible.

    Sorry about the previous comment, but it does suggest the format of SG entry should be made clear.
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    Eric This calculator (dry yeast -...

    Eric

    This calculator (dry yeast - https://www.lallemandbrewing.com/en/...te-calculator/) must be wrong.

    London yeast
    2000 litres
    1048 OG

    And it tells me I need 26.2 tonnes yeast!!
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    About 15 years ago, I worked at a couple of...

    About 15 years ago, I worked at a couple of breweries which were trying to install biomass boilers. We had to dry the spent grains, from if my memory serves me correctly, 42% moisture ex lauter tun,...
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    My previous suggestion - I think I got it the...

    My previous suggestion - I think I got it the wrong way round. Calcium bicarbonate has a lower pH than calcium carbonate. On heating, the calcium bicarbonate decomposes to calcium carbonate and CO2...
  8. I would start off by carrying out a couple of...

    I would start off by carrying out a couple of runoff audits

    Its a hell of a lot easier if you have a refractometer than having to use hydrometers

    So, at the start of runoff of existing brews,...
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    Hi Rob Use a double diaphragm air driven pump....

    Hi Rob

    Use a double diaphragm air driven pump. I installed a large yeast waste collection system at one of the breweries in Tad, where we used to collect into large tanks, with atmospheric...
  10. You're right. I should have made it clear it...

    You're right. I should have made it clear it would be necessary to leave the vent pipe disconnected / open to atmosphere. That's the best you can do with this design. It wouldn't be safe to...
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    The yeast suppliers recommend hydrating the yeast...

    The yeast suppliers recommend hydrating the yeast before adding to the FV. I know not everyone does, and I have just sprinkled yeast on the wort in FV myself without any major issues, but it does...
  12. I would do what what you find works for you. ...

    I would do what what you find works for you.

    HOWEVER, tanks with dual jackets which are not linked internally are intended to be run in parallel to give flexibility of cooling. A couple of...
  13. The 1.5 inch vent pipe is going to have to be...

    The 1.5 inch vent pipe is going to have to be brushed through to ensure it is cleaned - 1.5 inch pipework requires a flow of 7200 litres / hour to clean (based on 2 metres / 7 ft per sec for this...
  14. Ah well. This thread is going from the sublime...

    Ah well. This thread is going from the sublime to the ridiculous



    Look up the properties of dry ice
  15. OK, I'll come back to this thread. Firstly, I...

    OK, I'll come back to this thread. Firstly, I suspected you probably were looking for aroma and minimal additional bitterness, but using extracts, as pointed out earlier, normally is for bitterness...
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    Apart from the forced fermentation to determine...

    Apart from the forced fermentation to determine the attenuation limit, a couple of other thoughts

    I assume you are using 500 gramme packets. If so, I have found at a couple of breweries that you...
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    Since you haven't told us what the design of the...

    Since you haven't told us what the design of the dosing pump etc etc is, how can we possibly comment?
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    Ah. The following day, yes. But I definitely...

    Ah. The following day, yes. But I definitely wouldn't risk a week or more without full clean ans sanitisation
  19. Can't talk for the US, but here in the UK, and...

    Can't talk for the US, but here in the UK, and presumably the rest of the EU, if you sell a beer that is claimed to be gluten free, then you have to have every batch sold as such sampled, analysed...
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    Definitely. The space between the arm and the...

    Definitely. The space between the arm and the housing will accumulate yeast and other debris, and it will not get washed out by the sprayhead deluge. Unfortunately no-one that I know of has managed...
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    As has already been said - it could be a day or...

    As has already been said - it could be a day or so, or weeks, depending on the cleaning and sanitisation regime. However, good practice in large breweries at least says they should be filled...
  22. A minor point, but centrifuges are not filters. ...

    A minor point, but centrifuges are not filters. So you will get virtually no difference in my experience of hop aroma, unlike a true filter. irrespective of speed unless you have highly variable...
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    A guy I worked with setting up a place in...

    A guy I worked with setting up a place in Bucharest was going to use Weyermann malts.
  24. With the various ions left in even after...

    With the various ions left in even after softening, I think you are better off getting a larger (or second) RO plant for cleaning water. Assuming the softener has replaced ALL the calcium and...
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    OK, so this is going back a good few years, and...

    OK, so this is going back a good few years, and using large (1000 and 2000 hl) FVs - but the principle applies to all sizes

    We used to have a recovery CIP system, using cold, recovered rinse water...
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