Well, I set down in the shop a few minutes ago and just set there for a while and went over what I have done on the boiler so far and to see what is left and I am quite a bit ahead of where I was thinking I was, and I have pushed my welder and both my grinders too hard this morning I have to give them all a cool down break, which sounds alright to me too. right now, LOL.
I might as well go ahead and tell everyone, that one of the improvements that I was talking about making on the boiler is something that I have yet to find any outside wood boiler that any company in the industry has in their boilers, is that I have designed a grate in mine, but it isn't just a grate to lay the firewood on.
It is built with 1" I.D. pipe and has 17 pipes on the bottom for the grate, and I also have added another 17 pipes up top where the outside boiler/furnace industry calls a secondary burn chamber.
My design differs to start with, simply because I use a grate, plus the fact that it is pipes, plus the pipes that run through the secondary burn chamber is where the water coming back from the house, and after it has delivered the heat to the house, shop, greenhouse, or where ever, and has just been cooled by doing so just before it re-enters the storage tank, it runs through these pipes and I'd like to think that 8 gallons per of water running through 34 - 1" pipes, or more accurately, 30.2 ounces of water per minute running slowly through each one of the pipes, with 17 being the pipes that are engulfed with red hot coals from the fire and the other 17 at the very top of the firebox where I'd think would be the second hottest place in the firebox, the water would be right back up to 185* when it gets back to the storage tank.
That is 30 ounces of water taking 60 seconds to flow through 24" of 1" I.D. pipe and I can not understand for the life of me, that no one else in the entire industry, as far as I have found anyway, even has a grate for the wood to lay on, must less with water being heated from the coals.
The second addition that no other company in the industry does is I am not using a draft door that opens and closes when the fire needs or doesn't need to burn.
With my design, the firebox will be air tight so the fire will die down immediately when it reaches the desired temperature and when it needs to come back alive, there will be jets of air forced into the exact places it needs to be, including the secondary burn chamber, so all the gases that have built up during the down cycle will burn hot and clean, heating the pipes in the upper section of the manifold as it burns also.
I am sure that you are all used to hot steel, so you'll know that water that has only cooled down to maybe 170* will take a while at less than a quart per minute to draw the heat out of 24" of 190* or hotter steel pipe, so this boiler should be one of the most efficient outside wood fired boilers ever designed.
I really can't believe that no company in the industry uses these designs in their boilers. To me it just makes no since not to.
I know that I used 1" id pipe in the first grate that I ever built to go in a fireplace and it sagged down really bad in the middle of it but that was only a grate to hold the wood off the hearth for air to get under it, but the next one I built I made a grate/blower unit where air was blown through the pipes and the air coming out was hot as all get out but the pipes didn't sag down after two years.
Maybe the entire industry thinks they will sag down but if the air flow kept them from doing so, I am quite sure that water running through them will stop that problem ASAP.
Anyway, after all that crap has been said, as I said to start with, I have gotten a long ways ahead of where I realized I was until earlier today. Well, I started typing this several hours ago and have done more since I started on writing this.
The pipes I talk about is what I am calling a manifold, which has a top half and a bottom half. The bottom half is already welded in completely and I have the firebox cut for the top half to go in tomorrow if I don't go to church. Not saying I do very often because I don't, but I might in the morning anyway.
But the boiler is just about ready for me to pressure test her sand go ahead and stuff it in the storage tank and seal her up. But I still have about 200 gallons, give or take a few gallons of used motor oil to pump into some 55 gallon drums.
I didn't know it was in it when I bought it but I'm not fussing about it. I have a sprayer designed also that I can spray old kitchen oil, motor oil, or whatever to turn into it to heat also. But I am not counting on using that a lot. Just when some comes along.
So the biggest reason I told you all about this is because it looks as if I will be getting started on building the tractor a few weeks sooner than I thought that I would, and I thank the Good Lord for that.
So it seems as if I underestimated my timing and have gotten off to a slow start at getting a tractor designed.
My little pick up truck I thought about getting is already gone so I am still with the 18 H.P. engine and looking for a rear end & tranny, and a gear box for my tractor again.
I forget who it was, but one of you posted a picture of a tractor from behind that showed that baby blue rear end that I liked really good. It has the look of, "You Can't Break Me!"
That is what I want my little tractor to look like from one end to the other and I want it to be built that way too.
I want the 18 H. P., B & S twin cylinder engine to be the weakest link in the entire tractor and I don't want anything in the entire tractor that the engine can break.
Well, it's time for the sack, so I'm gone for now.
Edited by Ranger2000, September 08, 2014 - 07:12 AM.