Nerds need more info!

[Woody Stover]

Are these EPA reports available somewhere for all stoves? Seems like we could glean more useful info on how a particular stove runs. I just saw these recently; Haven't searched long and hard yet...
234 pages...brutal! But it might be worth wading through.
https://kumastorage.blob.core.windows.net/content/images/PDF Manuals/SEQUOIA TEST REPORT.pdf
(broken link removed to http://jotul.com/us/products/stoves/_attachment/29727?_download=true&_ts=14d52d434dd)
http://blog.woodstove.com/2016/01/our-new-stove-passes-epa-testing-with.html

 

[jetsam]

Here's some Blaze King ones.

Interesting that the emissions on my stove are much lower than advertised- I think they list it at the average value of 2 grams/hour, but if you look at the lab's test run that is closest to my usual burn, it came up to 0.47 grams/hour.

I guess they're required to list the average of the runs.

Looking at the methodology used, they do record a lot of environmental variables, but when you compare one model's final number against the next one, you are dealing with a large amount of imprecision, supposition, and averaging- I didn't know that until I read a couple reports!

I wonder how many times stove manufacturers have to pay to run these tests to get optimal results, since it seems like there'd be a lot of variation even using the same stove on different days with this test setup.


(broken link removed to http://blazeking.com/TestReports/PrincessInsert_OMNI_web.pdf)
(broken link removed to http://blazeking.com/TestReports/Princess_OMNI_web.pdf)
(broken link removed to http://blazeking.com/TestReports/King_OMNI_web.pdf)
(broken link removed to http://blazeking.com/TestReports/Ashford20.1_OMNI_web.pdf)

 

[yooper08]

Not sure if this is something you'd be interested in or have seen before, but it's the EPA's list of all EPA-certified stoves.

Granted, their numbers are based on test setups but the test procedures allows you to consider the same amount of wood that is in the same condition in a comparably sized stove. Real-life numbers with cordwood will definitely be higher, but just gives a reference point to easily/fairly compare.

http://www.epa.gov/sites/production...ist_of_epa-certified_wood_stoves_oct_2015.pdf

 

[BKVP]

The gr/hr are a weighted average based upon dimensional lumber. From the four burn rates set forth in Method 28 (now 28R) the weighting is not equal. In fact, industry and regulators agree that most wood stoves are burned on low most of the time. Therefore, great weighting is placed upon low and medium low burn rate test results. (Confirmed by manufacturers their advertised low burn times, rarely high burn times)

Catalytic stoves typically burn cleaner in lower burn rates as residence time is increased. The increase in residence time allows for more thorough destruction of particulate.

As of May 15, 2015, full test reports are to be made available by all manufacturers.

Yes, while a catalytic stove may have weighted average of .88 gr/hr, 80% of the time is will produce less. Again, based on lab tests.

Great efforts are underway to develop a cord wood test method. Early test results show catalytic stoves perform nearly identical in cord wood tests as they do in dimensional lumber fuel tests.