External mass temperatures 12 hrs after last burn.

Hi All ;  Got the bright idea to check some mass temps this morning, 12+ hrs after the last fire.
Outside temps this morning did not get as cold as expected 36 F, nor did the 7" of snow fall...
greenhouse / studio temp this morning at 9 am was 51 F taken at chest high across the room from the mass.
external temp of brick outside of burn tunnel 108 F
temp outside of feed tube 101 F  
Cob at mid way on barrel 61.0 F
Top of manifold / transition area 107 F
side of mass near core unit 103.6
Top of mass next to vertical pipe exit 83.7 F
center top of mass 72.1 F
Far end of top of mass 66.9 F

As you can see large mass equals a long hold time on temperatures.  I will try to post with more readings on a below zero morning.

Good morning all;   Just about February and we seem to be having a mild winter.  So far no below zero F temps at all.

6 AM   outside temps 14 F,  inside greenhouse / studio is 40F at chest high across the room from the mass.


We were gone all day yesterday from 10 am till 6 pm . Daytime temps hit 34F . We had a fire from 7-10 in the morning and from 6-10 last night.  Normally that fire would be burning all day, on average 12 hrs + of burning and we are burning less than 5 cords all winter!  The studio is toasty warm everywhere not just near the stove!
In five years the coldest that room has been was 35F  on a 14 below zero morning after several days of high temps in the teens.  (we were probably burning 15 hrs a day at those temps)
This is a non insulated plastic greenhouse/ artist studio,   it would have been 14F out there this morning with no RMH.


These readings are after 8 hrs with no fire.  
Front of feed tube 133F
Side of burn tunnel 113F
Barrel cob 62F
Top of transition area 92F
Top of mass near core 82F
Top of mass at far end 59F
Side of mass mid way 75F

Hi Thomas,

Check out the latest post in rocket stoves.  I know you will have some valuable inputs for Erin.

Cool looking setup you have in the studio!

Sincerely,

Ralph