Ron,
The problem is the test being used doesn't work. Never has. Never will. That because there is no way to determine the energy in the leftover mix of ash, char, torrefied wood, biomass and water at the accuracy required for the purpose of calculating energy used. That short of $$ and lab tests. This has been obvious to many of us from the beginning and we have always been looking for a better test method as we continue using the only method we know. I have finally figured a better way of doing it -wish it hadn't taken so long. What we need to do now is quickly get the procedure in the hands of those that test, regulate and make decisions as to how testing is done so that we can switch over -and then move on to other important issues. Regarding your concern: As you recently mentioned regarding measuring the amount of char: "That is as simple a measurement as you can find." But to determine char quality you need lab tests. To determine the energy content you need lab tests. What we have been (and now still) giving you is very crude and nothing you can use. I test char for quality and they differ all over the map yet all look the same - black. Even with my proposed approach you will still need to have the char tested for quality and energy. Nothing has changed regarding that. Just that you are not being handed some meaningless number. Have a great time at the conference. Regards 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 From: Ronal W. Larson [mailto:[email protected]] Sent: Saturday, October 12, 2013 7:12 AM To: Discussion of biomass Cc: Crispin Pemberton-Pigott; Frank Shields Subject: Re: [Stoves] Shields E450c as a way to test char-making stoves (attn: GACC testers) List, Crispin, Frank I want what Jim is producing already. Which of course is already giving the char mass and percentage. I also want the same in energy terms (oranges). Ron On Oct 11, 2013, at 7:55 PM, "Crispin Pemberton-Pigott" <[email protected]> wrote: Dear Ron and Frank On the subject of working out how much char is produced: You gather the char and weigh it and then you know. Ron, would you prefer the char mass expressed as a % of the initial dry mass of fuel loaded? Thanks Crispin
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