[Stoves] Fuel and the inherency of emissions

[Crispin Pemberton-Pigott]

Dear Friends

I was looking for standards on the fuels and found this from the NIH talking about the inherent emissions fuels release.

https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3664014/

How can we bring common sense to these large organisations? They even talk about how kerosene produces a certain PM mass per m3.

"Numerous studies demonstrated that heater design (radiant or convective) is influential on emissions of pollutants (Apte et al. 1989<https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3664014/#R5>; Cheng et al. 2001<https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3664014/#R28>; Leaderer 1982<https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3664014/#R56>; Lionel et al. 1986<https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3664014/#R60>; Traynor et al. 1983<https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3664014/#R105>; 1987<https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3664014/#R106>; 1990<https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3664014/#R107>; Yamanaka et al. 1979<https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3664014/#R121>; Yamanaka 1984<https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3664014/#R120>; Zhou et al. 2000<https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3664014/#R127>). EFco were, on average, four- to fivefold higher for radiant heaters than for convective heaters; conversely, EFNOx from convective heaters were two- to fourfold higher than from radiant heaters (Table 1<https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3664014/table/T1/>), indicative of the hotter combustion temperatures of convective heaters. SO2 was not influenced greatly by device type, as emissions are primarily dependent on fuel sulfur content."

"Primarily"?  Otherwise, what - transmutation of elements?

Even though the authors were aware that inherent emissions a related to the fuel analysis, they still go on about the emissions from burning it as if it too, is inherent. They report that emissions of PM vary eight-fold depending on the fuel grade. It doesn't seem to occur to them that the combustors are suited to some grades more than others. It is akin to comparing the emissions from different gasoline engines from different manufacturers burning diesel instead of gasoline.

While there is plenty of interesting information in the documentation and reference articles, it doesn't seem to occur to the authors that promoting the development of cleaner burning appliances is the solution, not banning the fuels preferred by the poor.

Regards
Crispin

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