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Natures Comfort / Re: Updates on Nature's Comfort GT-220

« on: February 28, 2014, 07:59:59 PM »

stack temps are close to 500 degrees as measured with heat gun on the pipe, the actual air inside the pipe may be hotter.  And keep in mind the draft blower is a 350 or 500 cfm blower, so not only is the exhaust hot but moving really fast too. 

Because the stack is only hot when blower is running would mean that a heat exchanger in the exhaust would only get heat during cycles, the rest of the time it is cold.  So to reclaim heat from exhaust, it would almost have to run through a water storage of some sort to hold heat between cycles.

When I bought the stove, I got a great deal (?) at 3-4k less than a P&M optimizer 250 and a couple g less than an Empyre pro 200.  But now I wish I'd have spent the money because lower stack temp translates into less wood usage.  I assume.

You still come out ahead on the extra heat exchanger tubes. Ive been doing my research and its about a 30% difference in heat recovery. Look at portage and main there gasification stove has alot of tubes!

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Natures Comfort / Re: Updates on Nature's Comfort GT-220

« on: February 28, 2014, 07:50:06 PM »

Hi all im also a gt220 owner.... Mine is a early one also. I have replaced all my fire brick and upgraded to the gt6000 pressurized blower.  The new blower  makes all the difference! Im on my 3 floor plate in 4 years. 

Im planning on for next year making a retrofit set of tubes to make the gt6000 transformation. Also plan on deleteing the steel plate setup and using the steel to hold a firebrick floor.