Sunday, August 24, 2014

Charcoal

Burning wood to make fuel to burn for heat and cooking strikes me just a bit like curing radiation-caused cancer with radiation, but I can't argue with the result of either.

We stumbled upon this charcoal operation on one of our recent farm visits and were fascinated by the process. We had seen clusters of these large hornos elsewhere, but couldn't imagine what they were. This time, a number of them were puffing away and we had a chance to observe these large earthen ovens at various stages up close.

There were probably 10 or 15 of them--shoulder high from the top but taller than me from the lower door-like entrance in a small clearing in a remote area at the edge of orchards and farm land. A gentleman was overseeing the operation and had bagged up the cooled charcoal from some of the ovens. Others had stacks of espino (a thorny, protected tree in Chile branches. If you remove an espino tree you are required to replant another, though not necessarily an espino) branches and other raw wood ready to go into the ovens, and some looked to be filled with trash--perhaps the wood goes on top of household papers and burnable garbage. This one was actively cooking, with smoke coming from any number of porous openings, but primarily from ground-level. From the looks of things, the interior cavern is larger than the dome structure in the center. I asked what keeps the wood from burning up entirely and was told that they keep the fire very small.


From the picture below, it appears that they limit the amount of oxygen in the chamber by means of a metal door propped shut.

Being a bit of a pyromaniac and in love with the smell of wood burning, this was right up my alley and I lingered until I was so warm that I had to take off my newly knit sweater--now fragrant with smoke-- to finish the walk.

You see charcoal vendors all over, selling from the backs of pick-up trucks and in small stands. I have no idea what the yield of "carbon" ends up being for a ton of wood. That would be interesting to know. It would also be interesting to know what the impact these operations have on air pollution world-wide. But in a country where the stars are visible every single non-rainy night, and homes have maybe two light bulbs against the darkness, I will not blame rural Chileans for any holes in the ozone layer.


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