Thermal energy came from the pile of white ashes on this year’s tomato patch. It warmed my hands. The embers will exhaust their fuel soon and I’ll spread them on the ground after they cool. Tomatoes will be the last to be planted in a few weeks.
The burn pile was mostly branches from the felled oak tree. Yesterday I cleared three garden plots for spading, tilling, and then planting: more steps on the path to a productive garden.
It looks like Tuesday night’s hard frost killed most of the beets and damaged broccoli, kale and collards. I have plenty of seeds and seedlings for replanting. First we’ll see if the bigger plants recover before yanking them out.
The Washington Post published an article about transportation and the shift to electric vehicles. It gave reasonable consideration to the operating costs of such vehicles, and the trade offs between operating a gasoline powered vehicle and going electric. I found if the car gets parked most of the time, very little gasoline is burned.
Thus far in 2021, I spent $36 on gasoline; in all of 2020, $492; and in 2019, $930. The coronavirus pandemic curtailed our driving and reduced how much gasoline we purchased. Unless one of us returns to working a job, the gasoline we burn for transportation should be minimal.
All the same, the news in the Post article about the inefficiency of internal combustion engines was eye-opening.
Most internal combustion engine cars are so inefficient that the vast majority of energy produced by burning gas gets lost as heat or wasted overcoming friction from the air and road. In other words, instead of filling my car’s 16.6-gallon tank, I might as well put 14 gallons of that gas in an oil drum, light it on fire and watch the smoke drift upward.Washington Post, March 30, 2021.
When you put it that way, of course we’ll look at buying an electric car. We need to stop burning fossil fuels as quickly as we can.
When I burn brush on a garden plot I’m releasing carbon into the atmosphere, along with returning minerals to the soil. However, what I’m doing is already part of the carbon cycle and therefore a renewable process. University of Iowa chemistry professor Betsy Stone explained it to me:
“It’s considered to be a renewable fuel because we have that carbon cycle going on,” Stone said. “With fossil fuels, we’re releasing fossilized carbon. It goes into the atmosphere and takes millions of years to get back to fossilized form again.”Paul Deaton, Iowa City Press Citizen, Oct. 7, 2015.
I cut the stump of the oak tree tall so I could sit on it while contemplating the garden or needing a rest. Yesterday, while figuring out where to plant things it occurred to me burning brush was a good thing. I also thought we should probably get an electric vehicle.
While the first burn is done, I’ll be sitting on that stump coming up with ideas more often. Some of them will make their way into doing things.