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Post by independentenergy on Mar 7, 2024 9:43:18 GMT -8
in my little build i have a problem of high temperature at the chimney (160/200 degrees), Isa too small I think... I insulated the riser with superwool and on both sides there is space for the insulation, but if not if I put the insulation the gases would also heat the part where the insulation is now and perhaps they would lower the chimney outlet temperature a little, but I'm not sure if the riser heats up quickly enough at start-up, furthermore I have the configuration with the exit door in the upper position.
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Post by independentenergy on Mar 6, 2024 23:59:55 GMT -8
Welcome back Peter, I'm sorry for the overwork you had to put up with. In your setup it looks like the core was not isolated?
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Post by independentenergy on Mar 2, 2024 23:55:18 GMT -8
there were some small deductions in the tests I did. the heat inside the core is very high, the outside also gets very hot, I decided to make an oven above the core, and a socket on the wall that enter the hot gases as soon as they come out of the riser. I noticed that the chimney temperature is quite hot, I'm afraid that my ISA is too small I know it reached 160/200 degrees in the chimney, too much for my taste. Now I'm adding the oven if this isn't enough I'll try adding ISA, a bi-pass and changing the gas outlet because the second bell which should heat up and release heat doesn't heat up enough.
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Post by independentenergy on Feb 16, 2024 4:38:13 GMT -8
I did some tests of this core, ran it for three consecutive days and then tried several cold starts. I must say that my bell needs a bypass with this core, while it was not necessary for the j tube that I used before. Starting from cold is difficult, it is reluctant to gain temperature, I am also afraid of the slightly damp wood, it is not a Rocket Stove and the chimney for this core is important. But when it starts and gets hot it's quite impressive, not so much for the noise it makes but rather for the heat it develops and the duration of the charge. I have reached cooking plate temperatures above 400 degrees with averages above 300. I managed to heat my tavern and was able to boil water in a few minutes. I noticed that the door and the core itself heat up a lot, the door frame exceeds 300 degrees, the external part of the core also reaches 400 degrees. Combustion lasts about 45/50 minutes depending on the wood, I noticed that the next day some unburned coal remains at the bottom of the combustion chamber. the final port is set to 100% CSA. it's different from a batch box, everything works slower, it doesn't have a bad roar but the combustion lasts a long time and the heat is high, for now I'm satisfied I just need to improve cold starts.
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Post by independentenergy on Jan 21, 2024 9:47:13 GMT -8
I was wondering.... if anyone uses perlite to insulate the firebox? Can be done, it surely helps. Mix the perlite with some clay and wet it sparingly before filling voids with it. This way, the solidifying clay will prevent the perlite from sagging out. Do you think superwool is preferable?
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Post by independentenergy on Jan 21, 2024 6:50:27 GMT -8
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Post by independentenergy on Dec 30, 2023 9:54:38 GMT -8
was the aluminum tape used to close the vents on the uprights? do you think there is too much air cooling the core at startup?
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Post by independentenergy on Dec 29, 2023 13:26:05 GMT -8
yes Peter the height of the port is 197 and 47 wide. the bricks are 110 high. for the slots in the uprights they are exactly like in the drawing you sent me to be precise, the side slits start at 140mm, the firebox measures 280.
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Post by independentenergy on Dec 29, 2023 12:00:43 GMT -8
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Post by independentenergy on Dec 28, 2023 23:01:43 GMT -8
bad news for me Peter....in my build there isn't enough space for a front port. If I understand correctly, the problem lies in the fact that the core is slow to heat up?
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Post by independentenergy on Dec 22, 2023 3:28:05 GMT -8
yes Peter, it was just a curiosity, to try to understand if it was your intention to develop the system in that sense too, that's all. I ordered the tubing for the door and will start construction as soon as possible.
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Post by independentenergy on Dec 21, 2023 8:36:56 GMT -8
thanks for the drawing, now with this setup do you think you will do other tests with an open hearth?
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Post by independentenergy on Dec 20, 2023 22:21:44 GMT -8
thanks Peter, in any case is the size of the front air intake correct? I calculated half the CSA of the system which is approximately 66
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Post by independentenergy on Dec 20, 2023 11:46:29 GMT -8
I'm sorry Peter, but I really don't understand how this door is made...I'm really frustrated
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Post by independentenergy on Dec 20, 2023 8:06:16 GMT -8
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