Chubby Data Logging

Chubby Data Logging

PostBy: jjs777_fzr On: Tue Jan 01, 2013 3:01 pm

My first attempt at tracking temps on the Chubby I have installed in the basement.
I'm no expert but I find stats like this interesting.
This is only several days worth of stats.
Note - I have no baro and don't plan on installing one for various reasons.
I am not logging the data at any specific interval - as I work nights and have three kids so I just take the measurements when convenient.
I'm shooting the temps with a Centech IR gun which I find very accurate.
I am shooting two places for each measurement - I measure at the top 45 angle of the 90 elbow which is approx 6 1/2 feet high and then a measure at the center of the top removable lid.
I hope someone else finds this interesting - and if not well it's teaching me how to run the stove.
Note2 - terms used - shook is shaking the Chubby with the shaker handle and poke is when I use a metal rod to get at the grate slots from the bottom as Larry had demonstrated in his video.
I may consider tracking outside temp and wind speed since my old laptop is whats next to the stove allowing me to log the data and I'm always on accuweather ~now~ to see whats going on.
If someone else has done this I'd like to see the data collected - I'm still searching the forum to see if I can find comparative logs.

December 29th - Saturday
closed air intake - opened mpd full
shook and picked - loaded 3 scoops
5:16pm - 152.6 top 90 bend / 350.6 top center cap
opened air intake full
5:25pm - 195.2 / 386.9
loaded 3 scoops
5:30pm - 161 / 336
closed mpd - air intake 1/8th open
5:40pm - 149 / 370
6:08pm - 131 / 328
6:20pm - 132 / 338
6:30pm - 134 / 346
7:30pm - 149 / 413
7:50pm - 149 / 423
8:00pm - 151 / 430
9:15pm - 159 / 467

December 30th - Sunday
6:13am - 111 / 298
opened mpd - shook - opened air intake full
shoveled snow and drove wife to work - came back to lost fire
7:15am - restarting fire with kindling
7:17am 141 / 217
two scoops / poked kindling
7:45am 178 / 346
7:53am two scoops
7:58am shook
8:00am 245 / 345
8:20am 426 / 503
closed mpd / air intake < 1/8th inch open
8:52am 151 / 440
9:10am 147 / 418
9:10am shook / 3 scoops
2:10pm 174 / 500
2:14pm poked minimaly until orange glow seen in ash pile
3:07pm 176 / 534
4:27pm 172 / 521
4:32pm 211 / 559 opened ash door to remove ashes - took a few minutes to rake
5:16pm 179 / 547
5:42pm 176 / 537
7:27pm 167 / 511
7:29pm poked minimally until orange glow seen in ash pile
9:30pm 155 / 458
9:33pm opened mpd - opened air intake - 4 scoops
9:43pm 255 / 425 - closed mpd - air intake < 1/8th inch

December 31st - Monday
12:31am 156 / 503 - shook - 4 scoops
10:33am 127 / 402 - poked - 3 scoops - opened mpd - opened air intake
10:54am 214 / 359 - closed mpd - air intake 1/8th
11:06am 155 / 444 - air intake < 1/8th open
2:13pm 115 / 337
2:25pm shook and poked - added 3 scoops opened mpd and intake air
2:33pm 246 / 409 closed mpd - air intake 1/8th
7:44pm 150 / 470 shook and poked - two scoops

January 1st - Tuesday
1:52am 125 / 401 opened mpd opened air intake - poked
1:58am 213 / 434 three scoops
2:05am 277 / 429 closed mpd / air intake 1/8th
7:03am 179 / 545 mpd found at 90% open so it ran hotter - shook
7:12am poked / mpd closed / air intake 1/8th
7:18am 152 / 502
7:24am 149 / 495
8:30am 144 / 476
11:32am 144 / 465
11:46am 143 / 455
1:18pm 134 / 401 opened mpd / poked slightly / emptied ash tray
1:26pm 158 / 406 closed mpd / air intake remains 1/8th
1:31pm 143 / 408
3:12pm 116 / 290 opened mpd / air intake full open / poked / two scoops
3:41pm 220 / 402 shook / three scoops
3:46pm 131 / 321
3:50pm poked
3:53pm 114 / 265
4:30pm 115 / 188 poked - mpd still open and air intake full open
5:09pm 337 / 672 shook - three scoops - closed mpd - air 1/8th

January 2nd - Wednesday
12:46am 130 / 404 opened mpd - opened air intake full - two scoops
12:50am closed mpd closed air to 1/8th open
10:35am 142 / 459 opened air intake > 1/8th
Last edited by jjs777_fzr on Wed Jan 02, 2013 11:55 am, edited 1 time in total.
jjs777_fzr
 
Hand Fed Coal Stove: Penn Coal Stove & Chubby
Other Heating: CFM Wood Stove & Englander 25-PDVC Pellet Stove

Re: Chubby Data Logging

PostBy: dcrane On: Tue Jan 01, 2013 8:15 pm

It is a common misconception to think that adding more coal will produce more heat (as is the case the wood), Coal responds very slow. The depth of coal bed should be 6 - 9 inches for Nut size (it does not matter what brand coal stove your using)... to thin = unsustainable, to thick = clinkers and inefficiency. heat is produced more via air flow through the coal bed then amount of coal in the stove (this goes against everything in a wood burners brain though) LOL

Chubby is a wonderful coal burner, hope these facts help the understanding somewhat...
dcrane
 
Hand Fed Coal Stove: Crane 404

Re: Chubby Data Logging

PostBy: jjs777_fzr On: Wed Jan 02, 2013 8:14 pm

Thanks Doug - much of my understanding has come from this forum and a old book I go back to every now and again - Coal Comfort by Peter Hotton. It was nice to see one of the acknowledgements crediting your dad.
jjs777_fzr
 
Hand Fed Coal Stove: Penn Coal Stove & Chubby
Other Heating: CFM Wood Stove & Englander 25-PDVC Pellet Stove

Visit Hitzer Stoves

Re: Chubby Data Logging

PostBy: jjs777_fzr On: Sat Jan 05, 2013 2:07 am

cont. from January 2nd - Wednesday
6:30pm let fire go out - too tired to tend (sick)
6:39pm kindling started - mpd open air open - shook - poked
6:41pm 302 / 327 - two scoops
6:54pm 178 / 302 - one scoop
7:01pm 192 / 324 - closed mpd 90% - air intake 1/8th
7:27pm 154 / 401 - closed mpd
9:31pm 159 / 496
9:35pm opened mpd - opened air intake - poked - three scoops
9:43pm closed air intake to 1/8th - opened side purge 1/8th
9:45pm 183 / 409 - closed purge - closed mpd - closed air intake to 1/8th

January 3rd - Thursday
12:37am 160 / 447 two scoops
12:07pm 115 / 310 opened mpd - opened air intake - poked
12:12pm 155 / 344 - one scoop
12:35pm 194 / 511 - three scoops
12:49pm 153 / 342 - shook
12:56pm 116 / 292
1:21pm 317 / 686 - air intake < 1/8th - added one scoop
1:24pm - closed mpd 90%
5:27pm 156 / 494 - poked till orange glow
5:35pm 161 / 504
let fire die - sick

January 4th Friday
8:00am kindling started - opened mpd - opened air
8:05am - one scoop
8:16am 203 / 350
8:22am two scoops
8:30am one scoop
8:35am 146 / 286
9:28am 465 / 965 - closed air intake - opened air purge
9:32am 295 / 852 (temp outside 26..temp in cellar 50 - went to 66)
9:36am 222 / 736 - closed purge - mpd 70% open
12:11pm 155 / 468 - poked - two scoops
3:00pm 167 / 501
6:52pm 169 / 375 - poked - one scoop - opened mpd - opened air intake
7:00pm two scoops - air to 1/8th - closed mpd 90%

January 5th Saturday
12:30am 158 / 454 - opened mpd - opened air - poked - two scoops
12:40am 167 / 364 - two scoops
12:45am 147 / 332 - two scoops
12:50am mpd closed 90% - air intake 1/8th open
jjs777_fzr
 
Hand Fed Coal Stove: Penn Coal Stove & Chubby
Other Heating: CFM Wood Stove & Englander 25-PDVC Pellet Stove

Visit Hitzer Stoves