Alaskan Soft Coal Experiment

Re: Alaskan Soft Coal Experiment

PostBy: Tamecrow On: Tue Mar 23, 2010 2:55 am

stokerscot wrote:Is there plans to try the Nova Scotia bit coal?


There's some Nova Scotia bit on the way this week for testing. It's almost double the BTU of Alaska coal, and if I'm not mistaken approximately the same BTU as anthracite @ ~13,900 BTU/lb. It will be interesting to see how it burns in the test.

Terry
Tamecrow
 
Stove/Furnace Make: Warden King Ltd.
Stove/Furnace Model: Viking Jr. Boiler/Will-Burt 30

Re: Alaskan Soft Coal Experiment

PostBy: stoker-man On: Tue Mar 23, 2010 6:53 pm

Today was the last full day of experimenting and these are the results after a 6.5 hour continuous burn.

Beginning weight of coal 57#
Beginning volume of coal 1 bushel
Ending weight 3.5#
Total Coal Burned 53.5#


Final ash weight 5.35# / 10% by weight
Final ash volume .23 bushel / 23% of original volume

Note: The ash was not compacted in any way.

There was no unburned coal and no large clinker. No clinker any larger than 2 inches; exactly the same as anthracite clinker.

There was concern voiced about clinkers not falling off the edge. I tried to video but after radiation burns, I decided to take pictures at half hour intervals and one video of a large clinker falling off.

Note the clinker in the back right corner and front left corner.

Clinker-progression1.jpg
(241.03 KiB) Viewed 14 times
View: New PagePopup • Select:BBCode
[nepathumb]20100[/nepathumb]


Half hour later, the rear right clinker had fallen off and the front left clinker is growing.

Clinker-progression2.jpg
(255.2 KiB) Viewed 4 times
View: New PagePopup • Select:BBCode
[nepathumb]20101[/nepathumb]


Clinker-progression3.jpg
(256.16 KiB) Viewed 4 times
View: New PagePopup • Select:BBCode
[nepathumb]20102[/nepathumb]


Half hour later, the front left clinker was ready to fall off and I took this video. The ash falls off from the middle to the end of the video.

http://www.youtube.com/watch?v=D0a0B1nqsLw

This is the pot with the clinker gone.

Clinker-progression4.jpg
(222 KiB) Viewed 12 times
View: New PagePopup • Select:BBCode
[nepathumb]20103[/nepathumb]
stoker-man
 
Hand Fed Coal Boiler: 1981 efm wcb-24 in use 365 days a year
Coal Size/Type: Anthracite/Chestnut
Other Heating: Hearthstone wood stove