[Stoves] Press release and powerpoints from Design Challenge

Crispin Pemberton-Pigott crispinpigott at outlook.com
Tue Apr 12 17:56:06 CDT 2016


Dear Testers

 

Please see the really good set of testing experiments performance by Norbert Senf (from near Ottawa) to see how the Condar portable dilution tunnel for PM emissions compares with an EPA Method 5-G3 dilution system.

 

http://www.forgreenheat.org/upload/upload/Senf%20Repeatability-AGH-2016.pptx

 

The Condar with 6 inch filters significantly outperformed the M5-G3 Filter Train having about 1/5th of the variability in the PM rating.  A Condar is a very simple device that can be made for a low cost. Alex built his own and showed it at the Stove testing Camp held last June.

 

There may be interest from stove testers in learning how to use the device. It was invented over 30 years ago in Canada and as mentioned previously, was part of the Oregon Method 41 stove test method.

 

Also impressive in this set of tests was the very good repeatability for the efficiency calculation.

 

Regards

Crispin

 

 

 

 

 

 

Dear Friends of Pellet Stoves

 

This just arrive from the Alliance for Green Heat. It is talking about the result of the Pellet Stove Design Competition that was held last week at the Brookhaven National Laboratory on Long Island.

 

A number of wonderful presentations were made – not all are up yet on the link below but some are.

 

There were three contenders selected for this year’s competition and they received extensive testing using two completely different approaches.  Two were reasonably conventional updraft burners, one with an unusual elongated bowl-shaped combustion chamber with no holes in it. The other was a hopper-fed downdraft stove with a 30 Watt TEG mounted on it. It was very compact, the combustion chamber being no more than 80mm in diameter and mostly blocked with a large disk. The depth of fuel between the primary air entrance and the disk supporting the fuel could be adjusted allowing the total air to be controlled vis-à-vis the total burning surface. In effect, were it a conventional TLUD, it had a fixed bed of fuel with a variable height for the primary air entrance, which was not through the fuel.

 

There is no reason it could not be done upwards instead of downwards.

 

The fuel feeding was much like Alex English’s home heating stove, but downdraft instead of Alex’s crossdraft. I think if Alex’s stove had been entered it would have won a prize of some kind.

 

Well done, winners.

Crispin

 

 

From: John Ackerly [mailto:jackerly at forgreenheat.org] 

Dear all,

 

Here is the press release <http://forgreenheat.blogspot.com/2016/04/wittus-and-seraph-win-pellet-stove.html>  from the 2016 Stove Design Challenge, announcing the winners!

 

Most of the powerpoints are now available <http://www.forgreenheat.org/decathlon/panel.html> . If you were a speaker and want to post or update your bio or the abstract of your talk, please send it.  

 

Thanks to those of you who completed the survey to help us assess the event and plan for the next one.  If you have not taken the survey yet, please take it now!

 

More info coming soon about the event on our blog, Facebook page <https://www.facebook.com/AllianceforGreenHeat/>  and newsletter. If you have good photos of the event, please send them and we will share with other.

 

Thank you!

 

John & Gabriella

 

-- 

Alliance for Green Heat
6909 Laurel Ave, #5461
Takoma Park, MD 20912
301-204-9562

jackerly at forgreenheat.org <mailto:jackerly at forgreenheat.org> 
www.forgreenheat.org <http://www.forgreenheat.org> 

 

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