Pullstart 63,604 #76 Posted Saturday at 02:58 PM Come to think of airflow, I am not sure if I make the holes larger if I’ll get the volume I need or if the bigger blower will create increased pressure to make the fire happy. Share this post Link to post Share on other sites
Ed Kennell 39,805 #77 Posted Saturday at 04:30 PM 1 hour ago, Pullstart said: the volume I need or if the bigger blower It's probably a fine line between sufficient air to create an efficient combustion vs maintaining a negative pressure in the exhaust flue pipe to insure no gas escapes. I have seen outside exhaust fans to insure safe gas removal. Just thinking SAFETY 1 Share this post Link to post Share on other sites
Pullstart 63,604 #78 Posted Saturday at 04:47 PM 13 minutes ago, Ed Kennell said: It's probably a fine line between sufficient air to create an efficient combustion vs maintaining a negative pressure in the exhaust flue pipe to insure no gas escapes. I have seen outside exhaust fans to insure safe gas removal. Just thinking SAFETY It did take a bit to get the flue hot. Once it was though, draft was not an issue. Also, my shop is not very tight. Plenty of fresh air available for combustion and draft. I also played with baffles in the horizontal flue pipe. It did not pay off and I saw smoke seep from the pipe joints. I removed them right away and have no intention to place them back in any time soon. I’LL ALSO MENTION, the doors of the shop were open during operation, to allow the smoke to clear, to allow some failure and insure my safety. It still got a bit hazy in there. I made sure to keep myself in fresh air (door openings or outside) while not tinkering with the setup. 2 Share this post Link to post Share on other sites
Pullstart 63,604 #79 Posted Saturday at 05:12 PM I also took a moment to RTV Red (650 degrees) the gaps in the exhaust pipe. I might even hit them with some high temp pellet stove tape. 1 Share this post Link to post Share on other sites
Pullstart 63,604 #82 Posted 9 hours ago I’ve been playing with this thing, and think the blower just can’t overcome the vent length. It’s a thing, and I knew it might be. I don’t want a fan on the exhaust pulling, for the concern it might get sooted up. I think I need to pull a length of pipe out of the system, though I don’t want to. That’s a cost of trial and error. Other than the masses of people telling me I need this, watching this quick video of the burner working outside reminds me how good it was with vent out of the playing field. 2 Share this post Link to post Share on other sites
Pullstart 63,604 #83 Posted 3 hours ago Shortening the horizontal flue helped increase temps greatly! I’m not sold on the whole design, but it’s getting better. 1 Share this post Link to post Share on other sites
Pullstart 63,604 #84 Posted 3 hours ago I just shut it down. Once the fire was out, my rotor stack was close to 950 degrees without fire. 1 Share this post Link to post Share on other sites
