Hi Rindert, it was a litle different actualy. When l tryed EGR, l saw a increase in economy but not gas quality. I mean it wasnt worse but it wasnt better either, wich makes sence. With egr you allso introduce loads of nitrogen and no H2O so the gas composition stays relatively unchanged.
It is true, l occasionaly got moist and even tary gas. But that was at all gasifier loads, not just low demands. The reason being charcoal quality. Updraft gasifiers are incredibly picky. That was the major reason for me to kick the updraft out and build a downdraft gasifier.
Power and trurndown ratio sake, l was wery pleased with the updraft…
Bob, you sayd the CO formation takes place in the reduction. I have a big old chemist handbook that says carbon burns in air in to CO2, but after a certain temperature, it burns straight from C to CO without the CO2 faze. If that is true or not, l dont know.
On precise gasifier temp reading, l thod a lot about it too. I was thinking what if we put a pipe and a seight glass in parts of the hearth we want to monitor, and mount photovoltaic cells on each port. As temp goes up, so does radiation, so does voltage produced. Once calibrated l think thats a rather acurate device, and above all, cheap