[Stoves] Testing gases from stoves

[Inversiones Falcon]

Hi Frank I did not get any file, will you pleas send it to me.
Best reagard
Gustavo
      From: Frank Shields <franke at cruzio.com>
 To: Discussion of biomass cooking stoves <stoves at lists.bioenergylists.org>; "franke at cruzio.com com" <franke at cruzio.com> 
 Sent: Saturday, April 4, 2015 5:12 AM
 Subject: [Stoves] Testing gases from stoves
   




Dear Crispin and Stovers,   I found this to be an interesting report (attached) . I havebeen looking for a system that would test the combustion gases of interest –and helium.  And I found it!  It think this system (ion trap massspectrometer or quadrupole mass spectrometer) may be what’s in Crispin’s handheld tester(?).  I think it may teat forhelium but, perhaps, is just not set up to do it because  ‘Who would want to testhelium along with combustion gases?’ – We Would!  This could make testing gases much more accurate and easier. How I suggest it working is as follows: We pipe in helium at ~ 0.5L/minute into the stove at fuel levelin a known and steady rate during the combustion experiment.  So we know the total carbon in the stove fromthe added fuel and the constant rate helium is leaving the stack.  We monitor the CO, CO2, H, O2 produced duringthe experiment and determine their concentrations. The volatile carbon not determined will be tars and other unburnedcarbon.The calculations are: (combustion components) per (heliumdetected). This makes it such we do not care about dilution of primaryor secondary air. We can make adjustments to them during the experiment and itwill not make a difference.  We only needto make sure we have complete mixing where we pull out the gas sample for testing.  The helium is called a Surrogate Standard andknowing that every minute there is 0.5 liters leaving the stack no matter howdiluted or how fast it leaves makes that a solid unit of measure we can ratio thecomponents of interest off. We only need to have the makers of combustionmeasuring device add helium to the other components of interest and we addhelium to the front end of the experiment at a steady known rate.    Regards    Frank    Frank Shields
franke at cruzio.com



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