Heating

Twister Top

Submitted by Jeff Davis on Sat, 2008-12-27 05:14

Last updated January 10, 2009

Twister Top pic 1: Burning air dried wood chips.

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Mr Switchgrass - burning/gasifying switchgrass

Submitted by Jeff Davis on Sun, 2008-11-30 03:10

Last updated December 30, 2008

Mr Switchgrass is an inverted downdraft gasifier design that burns/gasifiers chopped switchgrass or weeds with little to no smoke problems. A rule of thumb is that each section will burn for a solid ten minutes at full flame. I measured 66 lbs for one load and it ran for about 40 to 50 minutes.

Burner Flame

Burn Flame 2: Started with paper or house trash.

Burn Flame 3: Smoke free flame.

Burn Flame 4

Burn Flame 5: Very clean burn.

Bale Storage: This is how I stored the bales of switchgrass.

Flue: No smoke from the stack.

Transformation Tower: More proof of the clean burn.

Air tube and grate: Grate and air tube.

Loaded: Here you can see a new load of switchgrass, air tube and air holes.

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Twister

Submitted by Jeff Davis on Sun, 2009-01-04 05:32

Last updated January 03, 2009

Twister Pic 1: Tall flame, concentric vortex burner.

Twister Pic 2: Concentric vortex burner.

Twister Pic 3: Short flame.

Twister Pic 4: Concentric vortex burner fueled with Cedar.

The Twister is a crude prototype of a concentric vortex burner that was made from what was remaining of Mr. Charcoal. Basically you are looking at a hot water heater turned upside down.

It was fueled with ceder shavings (bedding) purchased from Tractor Supply Company. Although I was surprised that it did burn during the first test run I was somewhat disappointed with the cedar feedstock. Without a pilot fire, in the bottom of the burner, it became difficult to keep it burning with just the cedar. But I am looking forward to testing a more volatile fuel like chopped switchgrass with it.

A Youtube video of the Twister

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