Jim LaFrom wrote:RE: radiators
Although we think you may be on the right track,you have to understand that this piece of technology is being used in completely the wrong way from the inventors intentions.Hot water/coolant from the engine was supposed to be COOLED by the air rushing over the fins of the radiator. We are doing the reverse of this.
In this circumstance you may have to resort to a large truck/towing radiator or one from an 18 wheeler to have enough CSA for the fluid to flow through to suck heat off the fire. You've got it hooked up to garden hose when the design of the radiator outlets is for something more like 1 1/2" hose.
I see this as more of the issue than distance at this point but clearly clearances all play a part of the equation. More pumping volume and bigger pipe would do wonders! Might as well be trying to put out a forest fire with a 'Water Pik' toothbrush. It would be very helpful to stick a thermometer inline with the water hose to monitor temps and know when your getting with specs of the water radiator, otherwise you'll be seeing a meltdown or worse. Stay safe out there.
Satamax Antone wrote:John, did you see the reply i made to your post at Donkey's?
Satamax Antone wrote:John, is it Batch rocket time?
Satamax Antone wrote:John, insulate that last elbow in the ground outside at the vertical chimney. Better yet, put a T in place of the elbow, with a plug, so when your exhaust temps are real low, you can open it and let flow directly on the ground until it warms up.
Your stalling in the range of 30F°, and not stalling in the range of 10F° seems normal. Your temperature differential between exhaust temps and outside temps not being enough to have a strong stack effect when you are in the thirties. Hence the previous comment. My opinion is, you have too long a pipe into the ground. This cools off your gases too much.
Satamax Antone wrote: I'm under the impression that you're trying to get too much from your six incher.
I'm afraid to say, go on make it a 8 incher. I think it could be possible, even with 6 pipe. Tho, may be another try you could do, if simple enough, to dismantle, you could try a 6 batchbox. That would increase the output. Don't know about your temps draft or else. But if it burns, well, you'd be sorted.
what is your cob mix around the burn tunel and begining of the heat riser? Any straw? Sawdust? Ashes in it? Perlite?