December 06, 2005

Stove maintenance

Posted by Scott at 06:51 AM

Stove - I woke up this morning to a request from Michelle. "The stove didn't start," she called up from downstairs as I was checking the morning email. "Be right there," I replied. It was about 20 minutes before the kids get up so I hurried downstairs.

I knew what the problem was. Overall the stoves are pretty simple to care for, but they do require regular interaction compared to a natural gas, heating oil, or propane based furnace. Once a day you have to fuel them up. If they were turned off at the time, it's also usually a good time to push aside the ashes. Pellet stoves make remarkably little ash. After a full day of use there's about half a cup of ash. It still amazes me.

But there are other less frequent things to be done. About once a week you should brush down the cast iron that it burns against to promote better heat transfer. About once a week you need to remove the carbon buildup from the burn pot. That's what I had neglected. If you don't do that, the stove has a difficult time igniting because the carbon buildup (which looks like charcoal) actually insulates the ignitor from the wood, preventing it from starting.

About once a month you need to throw out the ashes from the ash collection tray. Dad tells me wood ashes are a good source of potash, aka potassium. The problem is that in the middle of winter you aren't thinking much about next years plants. I'd like to bag the ashes until spring but Michelle usually just wants to toss them in the conservation area.

Lastly, about once per ton of wood, you need to clean out the heat exchanger. While most of the above items are pretty trivial, cleaning out the heat exchanger is a bit more daunting and dirty. It requires partial disassembly of the front of the stove to get at the accordion like baffles where the air flows to pick up the heat from the fire.

When you write about it, it all seems like a lot of work, but it's not. It's usually just five minutes a day. I actually enjoy it a bit, but I'm not sure why. In a way it reminds me of boyhood days when I would watch my dad do routine maintenance of his car. Nowadays one can do much less under the automobile hood. So now I maintain my tractor, clean the stove, and overall fix the things the boys break routinely. I think the fix-it/maintenance trait must just be a tendency built into the Y chromosome.

Gasoline - Did you notice that in most places, gas is at or below where it was six months ago? This is well before Katrina, Rita, and Wilma. Click the graphic below to enlarge it.

Click to enlarge

I'm waiting for a big Senate investigation about the recent price plummeting! Just kidding... Everyone wants to grill the "Big Oil" companies when prices rise, but no one wants to do anything real to assure a better buffer against transient supply shortages. It's more politically expedient to blame greedy executives rather than accept market realities and keep supply and demand better balanced. Economics: it's like gravity. It's always there, get used to it.

I predict that now that we are getting into seriously cold winter weather, the demand for home heating fuel will compete with gasoline refining and cause the gasoline price curve to swing back up a bit, at least for a while.

Comments

Question. When we have a larger coal reserve than all the oil in the world, and we have the ability to turn that coal into clean burning liquid fuel, why don't we? And no, it is not because it cost to much to convert.

Posted by: Uncle Butch at December 6, 2005 08:50 AM

Hi Uncle Butch,

Good question. Partly it's NIMBY - aka Not In My Back Yard syndrome. No state wants to be seen as mining for coal. It always struck me that it's okay for the Middle East to pepper their landscape with oil wells, but we can't dig for coal here or drill in Alaska or use local shale deposits.

You are right that we can convert coal into oil. Currently that process is more expensive that the "usual" price involved in just lifting the easily accessible oil from the ground. Now that oil is at $60/barrel, many alternative approaches to fuel become economically feasible. So who knows what the future has in store?

Personally, I just like the idea of diversifying fuel sources. Just like you should NOT put all of your money in one stock, I don't think we should concentrate on heating from just one or two sources. Nature abhors a monoculture.

Have a Merry Christmas Uncle Butch. Stay warm! ;-)

Posted by: Scott at December 6, 2005 10:19 AM

Burn corn! I would, but I can't find a corn burning stove for delivery this year.

Posted by: Uncle Butch at December 6, 2005 09:21 PM

Butch,
Last year Lorri and I saw corn burning stoves for sale up in New Galarus, Wisconsin. They work just like wood pellet stoves but they use corn for fuel. Since we grow a lot of that in the Mid-west, it seems like a good idea.
Bob

Posted by: Bob Bilik at December 6, 2005 10:23 PM

Hi Dad, Uncle Butch,

This is actually a discussion I had recently with my co-worker, Will. When we would talk about alternative fuels, he'd often say, "but it doesn't scale up". For instance, wood pellets use leftover sawdust from lumberyards and wood manufacturing. But if *everyone* used one, it would mean we would actually have to cut down trees just for fuel. Lots of USA biodiesel uses leftover biomass from cooking and other processes, but if we went to 100% biodiesel, you'd have to start generating the mass to use.

My point was that there are many possible sources of energy available. Arizona and New Mexico have an abundance of solar power available. Other parts of the country are more amenable to wind or hydro. In New Hampshire we have several lumberyards. And yes, in the midwest, you have an abundance of corn. I tend to think that if we diversify, we can better scale than if we just try to find a 'one size fits all' solution and propose that everyone use that. Besides, one size fits all tends to make us more vulnerable to a shortage. Look at how volatile gas prices are.

Since we're on the topic of corn, let me point you to a website I found last month or so:

http://www.iburncorn.com/

It's a detailed site of one household's experiences.

Posted by: Scott at December 7, 2005 06:05 AM