Greetings Stovers, I've often thought fuel combustion characteristics to be a factor that need be quantified and used when reporting quality of cook stoves. Been thinking a 'standard stove' with fixed air flow, fuel quantity and standard ignition and watching and measuring the combustion properties of different fuels might be useful.
Found ASTM E 136 a test that takes construction materials and does just what I was thinking. There is a tube (~ 225mm long and ~100mm dia) circled with nichrome wire for heating a sample to 750 deg. The sample is suspended in a cup in the center. Center cup 40mm dia and 70mm long that holds sample. Air flow 0.0027 m3/min. Glass top for looking. Thermocouples all over the place. The test goes for max. 30 min or the sample temp does not change (< 1 deg per 10 min). Preheated to 750 before sample added to center cup. Report: weight change, visual-(quality, quantity, intensity, duration, smoke, flame, change in state), temperature profile, etc. etc. We do not have the equipment to do the test but it seems simple enough should a lab want to do this. Just thinking... Frank Frank Shields Control Laboratories, Inc. 42 Hangar Way Watsonville, CA 95076 (831) 724-5422 tel (831) 724-3188 fax www.biomassfuellab.com _______________________________________________ Stoves mailing list to Send a Message to the list, use the email address [email protected] to UNSUBSCRIBE or Change your List Settings use the web page http://lists.bioenergylists.org/mailman/listinfo/stoves_lists.bioenergylists.org for more Biomass Cooking Stoves, News and Information see our web site: http://www.bioenergylists.org/
