Re: Report on visit with John Crouch

[Tami Bond <tami.bond@noaa.gov>]

Ron, and greetings John, and hello Stoves,

This is in haste, and I promise to write more when I get back next week.

I do all my numbers in g/kg fuel which is most useful for emission
inventories.
I am aware of a lot of work on fireplaces that has been summarized (by
OMNI, I think). However, it is becoming obvious that fireplaces/wood
heaters perform so much differently than small, tended cookstoves.
Large, untended cookstoves may be more similar to fireplaces.

>  Particulates   G/KG
>   Conventional uncertified wood stove - 36.25
>   EPA-Phase 2 Certified                      3.73
>   Masonry fireplace                             25.7
>   Zero-Clearance Fireplace                  19.36

    ROCKET (2 KINDS, 2 TESTS EACH)           3.7
    OPEN FIRE, TENDED WELL                   6.1

> CO  G/KG
>     Conventional uncertified wood stove -  180.96        YIKES!
>     EPA-Phase 2 Certified                        56.36
>     Masonry fireplace                               119.2
>     Zero-Clearance Fireplace                    100.89
    ROCKET (2 KINDS, 2 TESTS EACH)                  39
    OPEN FIRE, TENDED WELL                          62

I would like to improve on my method of measuring CO so please do
understand that these are preliminary.

Since we could not analyze unburned HCs, I don't have estimates of
combustion efficiencies. Total efficiency of Rocket was ~27% (VERY
ROUGH, did not measure fuel heat content) and open fire was ~22%.

>     Second, to see if anyone else has simple cook stove numbers to
> report - so we can start developing a larger data base.

I am happy to collect these numbers-- I do anyway as part of my emission
inventory effort. I have already done some tabulating of Kirk Smith's
work, Grant's, etc.

cheerio
Tami

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