To all; <OMG> : )
The ONLY reason to change the present efficiency method to the E450c method is to lower the detection limit. It is also nice to have a safer, quicker, cheaper, easier procedure and a test that deals with stove differences (rocket, TLUD, briquettes etc.) in a more comparable manor. Using the formula [A / (B-C)] where C (energy not used) is all over the map makes for a final value having a high noise level. If we cannot detect differences we cannot then plot the variables we put into the system. Some of these variables we may want to plot ranges to more optimize and fine tune stoves, or just to compare one stove to another, is listed below: 1) Is stove (A) more or less efficient than stove (B)? 2) Is it more efficient to use oven dried biomass or biomass having moisture of 1%, 3%, 5% 10% 15% or 20% and when plotting the results we determine the optimum moisture content. 3) Is it more efficient to use fuel with a higher volatile content (oily, resins etc) or fuels of more lignin etc. for boiling water or for heating a stove body for house warming. 4) what is the best shape for a fuel; (cubes, round sticks, short sticks, sphere etc.) that will result in the best efficiency? 5) what method of adding fuel results in better efficiency? 6) Is adding char or white quartz sand (and how much) into a mix for TLUD or Briquette style stoves result in better efficiency for the task. 7) ... so many more We can do none of these until we use a procedure that can detect so we can plot their changes. Perhaps the E450c will be that procedure. Also; There is a big difference in the 'C' value from char making and rocket type stoves. If we only use the energy in the 0c to 450c range that will be a common value for both stove types. Therefore the error when determining the energy in left over fuel is greatly reduced - actually eliminated. We then only have [A/B] once we pre-determine what (B) is in that pile of biomass using calorimeter and TGA or look-up tables and pipe procedures. Thanks Frank Frank Shields Control Laboratories; Inc. 42 Hangar Way Watsonville, CA 95076 (831) 724-5422 tel (831) 724-3188 fax [email protected] www.controllabs.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://stoves.bioenergylists.org/
