|
|
Post by sksshel on Jan 10, 2018 7:24:52 GMT -8
0,3W/mK and lower is considered insulation so I guess it will increase the ISA but not like vermiculite, calcium-silicate or ytong, they have lower thermal conductivity. Depends on the thickness of insulation too. I plan for 1 1/4" walls |
|
grga
Junior Member
Posts: 76 
|
Post by grga on Jan 11, 2018 5:15:10 GMT -8
some more questions /ideas:
I notice in these rainy and warmer days That I can have much better draft if I open also window in the room, besides the fresh air intake I already have... In colder days this is not so obvious. Probably my draw is not as good as I was thinking before. How do you now (with no instruments) how much air should you supply to the stove? As much as possible or until you can see it burns better/faster or that you can hear as loud roaring sound as possible. Or just enough to have nice fire without too much smoke in the core (the window stays clear all the time)...
I would also like to lower the amount of unburned coals. But I do not like the idea to leave air long time (20 minutes) after fire is gone... Would drilling a few holes in the threshold improve anything, also putting some mesh bellow the wood (to lift it a bit from the ash and allow some small amount of air also from bellow) should help but probably this is not desired for good efficient burn in the main phase?
I am now cleaning ash once a week (daily fires), because the amount of it does increase a bit day by day. I am wondering if placing some metal box in the lower part of the core would be a good idea. then you could simply just take it of, throw the ashes away and it would be no cleaning needed. But probably this idea was already found by some of you as bad or not?
|
|
|
|
Post by travis on Jan 13, 2018 5:39:27 GMT -8
Right but if I understand correctly, not all LTGS is the same, it depends on how it is made.
|
|
|
|
Post by coastalrocketeer on Jan 15, 2018 12:06:57 GMT -8
some more questions /ideas: I am wondering if placing some metal box in the lower part of the core would be a good idea. then you could simply just take it of, throw the ashes away and it would be no cleaning needed. But probably this idea was already found by some of you as bad or not? Metal might not last there, so consider it disposable and design "cheap and easy to build 2 or 3 at a time" when they spall and flake away from the heat... Also I believe ash pits that are open, were found not to be beneficial in the feed area on J-tubes... But a good thing in the manifold area if you have an access port down low where they fall... I don't remember any discussion of them around batch boxes that I've seen. But my memory feels weak in that area. Searching on "ash pit" and "ash cleanout clean-out clean out" might find the relevant posts. |
|
|
|
Post by Vortex on Jan 15, 2018 13:28:05 GMT -8
You could make an ash trap like I use. So rather than having a grate you have a small thick piece of steel over a channel in the bottom of the firebox. When you want to clear the ashes you lift out the metal bar covering the hole and push the ashes down it with a poker into the ash-box below.
That saves you having to shovel ashes out, which sends them flying all over the house. Also the steel bar is below the ashes most of the time so is protected from the worst heat of the fire. I've only gone through 2 bars in 10 years.
|
|
grga
Junior Member
Posts: 76
|
Post by grga on Jan 16, 2018 5:20:53 GMT -8
You could make an ash trap like I use. So rather than having a grate you have a small thick piece of steel over a channel in the bottom of the firebox. When you want to clear the ashes you lift out the metal bar covering the hole and push the ashes down it with a poker into the ash-box below. That saves you having to shovel ashes out, which sends them flying all over the house. Also the steel bar is below the ashes most of the time so is protected from the worst heat of the fire. I've only gone through 2 bars in 10 years. I was thinking about that in the building phase then I just simplify it. Now I can not make it any more... I get the idea, because in Batch box there need to be threshold - this can be side of the metal box, on the other side, closer to the port there will be no metal side. so this ash box will be a big metal spoon with trapezoidal cross-section. But as Costalrocket said due to the heat this metal box will probably bend and not last very long... Maybe i will try to make if, it should not be too difficult... |
|
