Draft Beer at Home Aug-02

8/8/2019 Draft Beer at Home Aug-02

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The WORT HOG BREWERS

Draft Beer at Home !Draft Beer at Home !

by

Jeremy Wallis (a devoted draft man !)




1. What are the benefits ?





Draft Beer : What are the benefits ?

• No more bottles ! (one big bottle ?)

• Clean 1 container not 50. (no empties to store)

• Dispense as much or as little as you want

• No empties the next morning (tee hee)

• Instant carbonation possibility

• Controlled carbonation

• Potential for filtering (clarity, portability)

• Can be used as secondary / lagering vessel





• Great for parties (assuming you have them)

• Guests feel less guilty than opening a bottle

• Easy to take on holiday

• You get to own impressive shiny things

• Adaptable for soft drinks / “Hooch” etc

• Addictive !!!!

• Moritz can fill them (e.g. emergency, feeling lazy)

• Easier to hug at the end of a long night.Sad to admit I know !




And, remember, whatever else you’ve heard :

“The convenience and control“The convenience and control

afforded by a draft system farafforded by a draft system faroutweighs the cost”outweighs the cost”

Trust me, I’ve been doing this for 5 years now !Trust me, I’ve been doing this for 5 years now !





Equipment : What will I Need ?

• The bare minimumis at least :-

– Keg

– CO2 gas bottle

– Regulator

– Some pipes – Connectors

– Chilling coil

– Dispensing tap

Zymurgy, Vol. 22, No. 1





How doCornelius

kegs work ?




Equipment : What will I Need ?Cornelius : “Ball Lock” and “Pin Lock” versions

Pin LockBall Lock

One standard sized

Red Indian !

Keep the different

sizes in mind whenbuying a storage ordispensing fridge /

freezer

Its usually best to

keep with one type

& to standardise onconnectors





The ever versatile CORNELIUS KEG !




Equipment : What will I Need ?Cornelius kegs, PIN LOCK . . . various views !

Pin Lock

Gas Valve

(2 pins)

Pin Lock

Beer Valve

(3 pins)

Pin Lock Keg,

Top View,

Note lid with :-

“Retaining Bail” &

“Pressure Relief Valve”




Cornelius kegs, PIN LOCK . . . various views !


Pin LockGas Valve

(2 pins)

Pin Lock

Beer Valve

(3 pins)

Pin Locks

work like alight bulbbayonet fitting

Pin Lock

Beer Disconnect

On the keg




Cornelius kegs, BALL LOCK . . . various views !






Valve andpoppet on aball-lock keg

How dothe valveswork on aCornelius

keg ?

Sometimes called

“Body Connects”




Equipment : What will I Need ?Disconnects for Beer & Gas

Grey = G = Gas

Black = B = Beer

Pin-Lock Kegs:

Bayonet-2 = GAS

Bayonet-3 = Beer

John Guestfittings are

plug & play

Ball lock - Beer

Pin Lock - Gas Ball lock - Gas

Pin Lock

- Gas





Nut & tails

Clamps for

gas & beer pipes

Disconnects & connection itemsBall-lock : gas

Pin-lock :

gas

Disconnects

John Guest Fittings





What sort of piping should I use ?




Equipment : What will I Need ?Gas bottle & Regulator & Piping & John Guest Fitting & Gas Disconnect





A regulator for your gas bottle

This section

connects intothe gas bottle

This gauge reads thepressure to your beer

This gauge

reads the

pressure in

your gas bottle

By screwing in this bolt you can increase

the pressure supplied to your beer




Equipment : What will I Need ?A draft dispensing tap – get a decent one with flow control !

Flow controller

Note how John

Guest fitting isintegrated into

the tap

Spout

Disc for

“sparkler”function





IN SUMMARY . . .


• The bare minimumis at least :-

– Keg

– CO2 gas bottle

– Regulator – Some pipes

– Connectors

– Chilling coil

– Dispensing tap




EQUIPMENT :

2.2 How do I use it ?





Equipment : How do I use it ?Cleaning & Sterilisation

BLEACH

ØAvoid bleach ! It can pit the surface of stainless steel, esp. if hot.





CAUSTIC SODA (Sodium Hydroxide – NaOH - Alkaline)

ØGreat for removing organic deposits

ØProlonged contact can damage s/s but is used professionally

ØComes in dry & liquid forms

ØCauses skin burns easily (should wear gloves & goggles)

ØRinse afterwards : hot water, then cold water (+ acid rinse).

ØGreat for cleaning filters after use (1 tablespoon flakes / 2 litres hot tap water)

ØVery corrosive to aluminium & brass

ØCopper is generally resistant to NaOH corrosion.




PERISAN (Peroxo-Acetic Acid - Acidic)

ØGreat steriliser – 0.5% solution (e.g. 5 ml in 1 litre cold tap water)

ØNeeds 2 minutes of contact time for ~ 100% killing.

ØWorks by bursting cell walls

ØCan be allowed to drip dry, i.e. does not need rinsing.

ØCan be rinsed with just cold water, rinses easily.

ØPowerful oxidising agent, do not get into contact with beer !






BEER STONE

ØChemically this is Calcium Oxylate

ØIt’s a calcinatious deposit that occurs when beer is contact with steel

ØIt forms quicker at hot temperatures, especially in steel kettles etc.

ØAppears as a dull brownish to brownish-white deposit

ØHand scrubbing with plastic scourers is one way to remove it

ØA 2-6 hour soak in an ortho-phosphoric acid solution, pH : 1.7 - 2.0,

followed by a mild scrub.




Equipment : How do I use it ?Cleaning & Sterilisation : My Personal Approach

ØClean outside of sealed keg with warm soapy water, cold water rinse.

ØOpen keg, disassemble lid, clean in warm soapy water, cold water rinse.

ØAdd 2 litres hot tap water to keg, swirl & empty to remove 99% of beer & gloop

ØAdd one kettle of boiling water, fit lid, invert for 2 mins, then shake for 30 secs.

ØPump boiling water out via beer-out valve.

ØDisassemble lids and soak in Perisan for 5 mins.

ØAdd 500 ml perisan solution, invert for 2 mins, then shake for 30 secs,

ØPump Perisan out via beer-out valve

ØInvert keg in sink and rinse thoroughly with cold tap water, use disconnects too.

ØDisassemble lids and rinse in cold tap water.

ØReassemble keg, purge with CO2 via beer-out valve.

ØDo a caustic clean only every 6 months.




Equipment : How do I use it ?Filling your keg . . . the draft equivalent of filling 50 bottles

. . . yawn . . .ØUse a sterilised pipe

ØPipe must reach to bottom

ØKeep covered during filling

(e.g. cloth + steriliser)

ØLeave 30 mm headspace

(aids carbonation step)




Equipment : How do I use it ?Naturally carbonating your beer : Use standard priming rates

See article in the WHB Library at www.worthogbrewers.co.za for full information




Equipment : How do I use it ?Force carbonating your beer :

ØWhy wait 2 weeks when it can take 90 seconds ?

ØCO2 dissolves easily in cold beer

ØTwo Approaches :

ØUse “correct pressure” for a few days or

ØUse an over-pressure briefly + agitation

ØMy approach :-

ØBeer at 4°C

ØOne litre (~30 mm) headspace in keg

ØApply 300 kPa (3 bar, 42 psi)

ØShake, rattle & roll for 90 seconds

ØDrink !




Equipment : How do I use it ?

Dispensing

“Jockey Box”

Instant chiller

“soda stream”

CO2 bottle& holder

Chiller coil

Standard CO2

/ N2 bottle Cornelius kegwith insulating

foam jacket




Equipment : How do I use it ?Dispensing & Storage

My own fridge,

used for

fermenting &dispensing,

single tap &

drip tray fitted !

The chest

freezer I use tostore kegs of

beer !

Cold plate in

ice box, 4

beers on tap !

Keg stored

outside, chillercoil inside




CO2 and your beer, WAZZUP ?


ØCarbonation is measured by the volume of CO2 gas

dissolved in 1 litre of beer, e.g. :-

ØReal Ale : 1.0 litre CO2 / litre beer

Ø Ale : 2.0 litres CO2 / litre beer

ØWeizen : 3.0 litres CO2 / litre beer

ØThe solubility of CO2 depends on beer temperature :-

ØCold beer :

ØCO2 is easier to dissolve in the first place

ØCO2 stays in solution better

ØWarm beer :

ØCO2 struggles to dissolve in the first place

ØCO2 wants to escape from solution





CO2 in your beer in litres of CO2 per litre of beer

TEMP 1.8 2.0 2.2 2.4 2.6 2.8 3.0 3.2

(deg C)

0.0 11 24 37 50 63 76 89 102

1.0 16 29 43 56 70 83 97 110

2.0 20 34 48 62 76 90 104 118

4.0 30 45 60 75 89 104 119 134

5.0 35 50 66 81 96 111 126 141

6.0 40 56 71 87 103 118 134 149

8.0 50 67 83 100 116 133 149 166

10.0 60 78 95 113 130 147 165 182

15.0 87 107 126 146 165 185 204 224

20.0 115 137 159 180 202 224 245 267

Pressure values are in kPa (100 kPa = 1 Bar ~ 14.8 psi)

Ø CO2 in the BEER & the HEADSPACE always strive to achieve equilibrium

Ø For highly accurate carbonation & dispensing use the equilibrium data below




Equipment : How do I use it ?In operation,draft systems must be used in equilibrium and be pressure balanced

ØTo ensure carbonation levels don’t change over time, use the equilibrium data values !

ØTo avoid foaming : Avoid beer stone & leaks.ØAlso, lower carbonation levels are generally less problematic (e.g. try 2 rather than 3 l/l)

ØYou must account for pressure loss in your system :-

ØPressure restriction during flow :-

Ø 4/16 inch ID pipes : 22 kPa pressure drop / metre of pipe length

Ø 3/16 inch ID pipes : 66 kPa pressure drop / metre of pipe length

ØPressure loss due to height :-

Ø 11 kPa pressure drop per vertical metre that keg is above tap

ØE.g. : Keg stored in a fridge at 8°C to dispense an ale at 2.0 litres CO2 / litre beerwould need a keg pressure of 67 kPa. Therefore, to avoid dispensing foam, you would

need 3 metres of 4/16 inch pipe or 1 metre of 3/16 pipe.

ØE.g. Tap is 1 m above the keg : Keep the 67 kPa & remove ½ metre of 4/16 pipe.





Filtration

DestinationKeg

SourceKeg

Filter Gas bottle

Filter

Cartridge

Equipment

in steriliser




3. Suppliers & Costs





Suppliers & CostsØYour best local source of draft equipment is

Bevan at Draft Craft :

http://www.c9.co.za/dc/index.html

Ø He deals with pub & restaurant installationsand specialises in homebrewers requirements


R200Cooling Coil :

R40 / monthGas bottle - hire :

R1000 – R2000Setup costs :

R120Gas bottle - refill :

R120 – R370Tap :

R7 / metrePiping :

R300 – R650Regulator :

R30 - R62 @Disconnects etc :

R220 – R560Keg :




4. Resources : Where to get more info





Resources : Where to get more info

Wort Hog Members who currently do draft :-

Jeremy, Moritz, Llewellyn, Ant, Donald, Bob, Arrie, Andy,Danie & Coenraad, Mike H., Willem , Roelf and probably afew more !

Web resources :-The Brewery : http://hbd.org/brewery/index.html

BT’s Library : http://brewingtechniques.com/library/index.html

John Palmer’s Site : http://realbeer.com/jjpalmer/brewing.html




Remember, whatever else you’ve heard :

“The convenience and control“The convenience and control

afforded by a draft system farafforded by a draft system far

outweighs the cost”outweighs the cost”

Honest !Honest !

AND IN CONCLUSION !!

Draft Beer at Home Aug-02

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Transcript of Draft Beer at Home Aug-02