Crispin and list: See below ----- Original Message ----- From: "Crispin Pemberton-Pigott" <[email protected]> To: "Stoves" <[email protected]> Sent: Wednesday, August 21, 2013 3:38:07 PM Subject: Re: [Stoves] Excess air
Dear Ron It is not about scale, it is about wrong answers. I gave real life examples of what happens when conditions are not what a formula-writer expects. [RWL: Can you rem ind where th ose "real-life examples" are? EA is a calculated value. If the calculation is incorrect then there is a systematic error in the reported value which would mislead the tester. [RWL: In my world EA is much more a measured value. Who do you know in the stove world who has any idea what the airflow i s in th eir most detailed measu rements? I didn't see i t at the stove camp - calculated o r measured. I do know measured air flow is part of the few doctoral dissertations I have seen in this area. So we should use the correct formula. [RWL: I ag ree that one can get more deta iled in presenting measured combust ion eff ic ien cy. Requiring a prior computat i on on the fuel characteristics that go into an EA pred ict ion and then compar ison st ill seems like overkill - partly for scale reasons. But I will re-look at what you wrote if you tell me where to look. But I repeat, if you gave me the most per fect computat ion of an EA for any stove, I don't know how to use that data for improving the stove, except in a very general way. Too many interacti ons of too many parameters. I'm in favor of trusting measured values. ] That's all. Regards Crispin >From BB9900 -----Original Message----- From: [email protected] Sender: "Stoves" <[email protected]> Date: Wed, 21 Aug 2013 21:32:10 To: Philip Lloyd<[email protected]> Reply-To: Discussion of biomass cooking stoves <[email protected]> Cc: Discussion of biomass cooking stoves<[email protected]> Subject: Re: [Stoves] Excess air _______________________________________________ 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/
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