Josh: I certainly want to be on your list of recipients, but think you should send to the whole list.
I learned va googling that you will be experimenting with a "drupe". I want now to hear what happens with avocado pits. I think we need really big TLUDS to make them work. Others are plums,peaches,dates,mangoes and apricots. Mangos sound the most interesting of that list. None spheres, but also none are pencil-like. There are probably experts around for each who can give the packing fraction (or void space and average path length so as to predict a "superficial velocity". I hope all is gong well for you away from Colorado. You are needed here. Ron ----- Original Message ----- From: "Josh Kearns" <[email protected]> To: "Discussion of biomass cooking stoves" <[email protected]> Sent: Tuesday, May 7, 2013 3:21:33 PM Subject: Re: [Stoves] Charcoal as space filler in TLUD reactors I just got a bunch of (spherical) cherry pits I'm going to try soon. Let me know if you are interested in the results.... On Tue, May 7, 2013 at 4:57 PM, < [email protected] > wrote: Frank and list: Need to bring in one more variable: fuel shape. Imagine the fuel is pencil shaped. If placed vertically, they work fine to make char. If horizontal and parallel, they can block most vertical air flow. Anyone able to supply biomass fuel spheres? Ron From: "Frank Shields" < [email protected] > To: "Discussion of biomass cooking stoves" < [email protected] > Sent: Tuesday, May 7, 2013 2:46:13 PM Subject: Re: [Stoves] Charcoal as space filler in TLUD reactors Dear Martin, I often determine the particle density here in the lab using free flowing sand. If the particle density of the fuel is determined (g/cc) and you know the weight of fuel packed in a known volume you know the volume of voids and can determine the air speed - I am thinking. Frank -----Original Message----- From: Stoves [mailto: [email protected] ] On Behalf Of [email protected] Sent: Tuesday, May 07, 2013 1:26 PM To: Discussion of biomass cooking stoves Subject: Re: [Stoves] Charcoal as space filler in TLUD reactors [Default] On Tue, 7 May 2013 09:22:19 +0200,"Boll, Martin Dr." < [email protected] > wrote: >You have to calculate the free space in order to get the real air-speed in this area. >I think even if that is naturally not the true surface-speed on the fuel, it is a good number to deal with. I think in gasification they use the term "superficial velocity" a fictional speed derived from the air volume and cross section of the chamber, the actual speed of any given bit of air flow through the spaces will be much higher of course. AJH _______________________________________________ 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/ _______________________________________________ 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/ _______________________________________________ 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/ -- Josh Kearns PhD Candidate, Environmental Engineering University of Colorado-Boulder Visiting Researcher, North Carolina State University Director of Science Aqueous Solutions www.aqsolutions.org Mobile: 720 989 3959 Skype: joshkearns _______________________________________________ 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/
_______________________________________________ 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/
