Water tank heat exchange

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Water tank heat exchange

Postby Garfield » Mon Jan 03, 2022 12:11 pm

Hey men. Excuse the hiatus. I signed on above five years back and didn't keep posting. I've distilled on and off in that time and turned out some half decent whiskeys.

The reason for my post today is I've relocated to a small townhouse and I'm not sure yet how to cool my condenser. My old house has a 2500L water tank which I recirculated through a pump. With not much yard at the new place I'm unsure how to heat exchange the condenser if I set up the still.

Is there a formula for thermal mass to calculate minimum water volume to condense the vapours? Has anyone else encountered this before?

Hope to post more in future if I can get back into the hobby.

Cheers
Garf
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Re: Water tank heat exchange

Postby RuddyCrazy » Mon Jan 03, 2022 12:36 pm

Hi Garfield and welcome back mate :handgestures-thumbupleft:

Now a bit more info is needed like the size and type of condensor, type of still ( as listed a reflux won't do whisky) and finally the size of the boiler and method used for heating ie: flame or element.

When I first started out i just used a 200 litre olive drum for my 2" potstill and 5 litre boiler and found I could do 2 runs back to back before the water got too warm.

Now if you are using a 50 litre keg as a boiler then a 1,000 litre IBC would be the minimum size tank.

so back to you mate for more info

Cheers Bryan
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Re: Water tank heat exchange

Postby silverbean » Wed Jan 05, 2022 8:52 pm

Hi Garfield,
I'm not sure about formulas but from experience stripping 25 litres of wash heated 60 litres of cooling water from about 20 degrees to over 50 and the condenser was struggling. Some people have tried a car radiator and fan to cool the water but would still need a large enough tank. A bit hard to help any more without knowing more about what your using.
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Re: Water tank heat exchange

Postby atec77 » Fri Jan 07, 2022 2:35 pm

Garfield wrote:Hey men. Excuse the hiatus. I signed on above five years back and didn't keep posting. I've distilled on and off in that time and turned out some half decent whiskeys.

The reason for my post today is I've relocated to a small townhouse and I'm not sure yet how to cool my condenser. My old house has a 2500L water tank which I recirculated through a pump. With not much yard at the new place I'm unsure how to heat exchange the condenser if I set up the still.

Is there a formula for thermal mass to calculate minimum water volume to condense the vapours? Has anyone else encountered this before?

Hope to post more in future if I can get back into the hobby.

Cheers
Garf

https://www.advantageengineering.com/fy ... FYI288.php
basically it depends on volume times cooling applied times efficiency , meaning you need a big cooler for the water being pumped and thats usually three times what you thought
:shhh:
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Re: Water tank heat exchange

Postby Garfield » Thu Jan 13, 2022 5:12 pm

Thanks guys handy replies. Good calculator too. I'm leaning towards finding space for a 1000L IBC. My initial idea was two 44gal drums one outbound and one inbound. I'm currently looking at a new still so can't yet commit to that answer. Probably just a 2kw boiler with a little pot condenser. Looked at cheap ones on 'unwelcome advertiser' site
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Re: Water tank heat exchange

Postby bluc » Fri Jan 14, 2022 3:57 pm

Single 44 will give you two-3strips or a 25l spirit run on lw. Depending On climate. I am in warm area and that is roughly what I would get .
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Re: Water tank heat exchange

Postby atec77 » Thu Jan 20, 2022 5:17 pm

bluc wrote:Single 44 will give you two-3strips or a 25l spirit run on lw. Depending On climate. I am in warm area and that is roughly what I would get .

sounds right
100l strip lifts 200l water about 20c from ambient qld
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Re: Water tank heat exchange

Postby B-Man » Thu Jan 20, 2022 8:16 pm

I got an old aircon that has 2 fans in it. I run the water through the coils with a 20L cube container housed inside the aircon aswell totalling about 40L. that could keep water just above ambient using a t500 with alembic pot running flat out doing a stripping run. I hooked up 2 more 200L blue drums and it handles my 4" bubbler no worries. can also run 2 stills at once with it basically holding ambient temps.
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