Thanks to all of you for your input. I couldn’t do this project without your help.
Gary, thanks for directing me to Jeff’s Pederick style fire plate nozzle. I found a photo of it. Two drops a second is the rate I aim for with the water, but that is continuous, since my control is out of reach. Yes—experimenting—there seems to be no end to it. Reminds me of the comment of some rich guy, when he was asked, “How much is enough?” He replied, “Just a little bit more.”
Garry T., Jeff’s hopper arrangement makes good sense, but due to my limited fabrication skills, I really need to keep it simple. A small reactor underneath the barrel would be good, but adds to the complexity. I have wondered about modifying the barrel lid some way to allow for some extra volume.
Dave & Brian, I’m also sure the slag protection is part of it. I removed a couple of large chunks when I dug out the nozzle, but I’m hoping metal mass will enable this one to survive. I think the typical side entry nozzle needs more space under it. Since that is what I was planning for originally, I located it about 4.5 inches from the bottom of the barrel. Using the floor flange to connect the plumbing to the barrel also limits how far I can go down. The floor flange would probably fit at the most 2 inches lower. But it is where it is and I’m trying to figure out how to live with it. The 16 gallon drum is the only size which has good proportions for a charcoal gasifier, but is not big enough for a vehicle. Trying to work with what I already have with minor modifications and get where I want to go is a challenge.
Kristijan, I really like your nozzle design and may very well go back to it after trying some other ideas. I know the real problem is that my reactor is not tall enough for a vertical nozzle unless it is mounted near the bottom or perhaps mounted on the bottom, like Gary Gilmore’s original Ranger reactor. I had wondered about the offset hole idea you mentioned. I will have to put that on my list of things to try. Thanks for the suggestion.