98l Ss Brew Vessel - Volume Vs Depth

[br33zy]

Hi All,

I've just spent the evening calibrating Volume vs Depth on my new 98l SS brew vessel. It's a beerbelly beauty with the hopscreen fitted to the pickup tube and a thermometer fitted as well. I used a 2l erlenmeyer flask for my volume reference.

I thought I'd share the numbers because I'm guessing there's a few of you out there with the same (or very similar) configuration.

In short, the Depth vs Volume is non-linear until the 63mm/12l mark (at which point the pickup plumbing is completely submerged).

After that, it's 5mm for every 1l. A beautiful thing indeed - almost as beautiful as that hop screen...

(The above figures make sense as the pot is 500mm in diameter. Thus its area = Pi*r*r = 0.197454msqrd. And 5mm * 0.197454 = 0.987l. Lovely).

Test boil down at the brew-space tomorrow night. If we don't blow ourselves up with the Italian Spiral I'll post some evaporation figures.

Below are a couple of pics and then the numbers in case anyone else can use them.

Cheers

Breezy

[Edit] P.S. Forgot to add that the pickup leaves just under 2l remaining in the pot.


Getting started - lots of mucking around to get the steel rule in place so I could actually read it.


50l in. Ooooh, its so shiny!

And the numbers....

Depth (mm) Volume (l) Notes
13 2 Non-linear due to hop screen and pickup tube.
22 4
34 6
45 8
54 10
63 12 Linear from here.
68 13
73 14
78 15
83 16
88 17
93 18
98 19
103 20
108 21
113 22
118 23
123 24
128 25
133 26
138 27
143 28
148 29
153 30
158 31
163 32
168 33
173 34
178 35
183 36
188 37
193 38
198 39
203 40
208 41
213 42
218 43
223 44
228 45
233 46
238 47
243 48
248 49
253 50
258 51
263 52
268 53
273 54
278 55
283 56
288 57
293 58
298 59
303 60
308 61
313 62
318 63
323 64
328 65
333 66
338 67
343 68
348 69
353 70
358 71
363 72
368 73
373 74
378 75
383 76
388 77
393 78
398 79
403 80
408 81
413 82
418 83
423 84
428 85
433 86
438 87
443 88
448 89
453 90

 

[jonocarroll]

Pfft. You can't post a big data set like that and expect me to just sit there and do nothing with it!!!

Well done by the way - any closer to a straight line and I'd have you for cheating. In fact... perhaps it IS too close?

 

[br33zy]

Pfft. You can't post a big data set like that and expect me to just sit there and do nothing with it!!!

Well done by the way - any closer to a straight line and I'd have you for cheating. In fact... perhaps it IS too close?

Well those numbers are too close at any rate. I proceeded at 2l intervals from 2l through to 50l - at which point I'd come as far as I could up my 300mm steel rule (the clamp was obscuring the numbers at 270mm); and satisfied myself that the progression was true and regular.

After whacking all the numbers in to a spreadsheet I infilled the 5mm/1l increments from the 12l mark. Which will just it easier for us on brew nights really.

Thanks for the line graph - what software did you use? I ran one up in Google Docs, but it wasn't as pretty as yours so I left it out.

Cheers

Breezy

 

[jonocarroll]

After whacking all the numbers in to a spreadsheet I infilled the 5mm/1l increments from the 12l mark.

Ah, so you did cheat then. No worries.

Thanks for the line graph - what software did you use? I ran one up in Google Docs, but it wasn't as pretty as yours so I left it out.

Excel doesn't need to look as bad as the default settings that people seem to love. The simple graph didn't really warrant the myriad of other graphing software I use - if it's simple, use Excel, then make it prettier.

Now I've just got to get around to doing the same with my kettle!