[Stoves] TLUD gasification rate research .... was Re: The need to continue the discussion: simmer efficiency
Paul Anderson
psanders at ilstu.edu
Fri Feb 20 09:47:25 CST 2015
Julien and all,
Julien's excellent research was presented at ETHOS and should soon be
available to all via the ETHOS website. It is already available at
the drtlud.com website:
http://www.drtlud.com/wp-content/uploads/2015/02/Winter-Julien-ETHOS-2015.pdf
There are many slides, including the one in discussion.
1. Refreshing my memory: the control of the gasification rate was by
changing the grate (8 of them) at the bottom, to allow more (or less)
primary air to enter for a specific fuel (6 fuels on the graph).
And where is the temperature measured? At the fuel bed when the
Migratory Pyrolytic Front (MPF) was there. Correct?
2. I am not understanding well the measurement
that is stated as g / m*2 s (grams per square meter x s )
I was expecting something more like the weight of the fuel per
minute. Is the m meters or minutes?
I do understand the concept that greater gasification rate would result
in higher temperature.
3. There are approximately 115 to 120 data points. How many of them
are repeated tests using the same combination of air control and fuel type?
Julien's work is a great example of meticulous scientific research.
AND he did it at his home facilities without external funding.
Much appreciated!!
Paul
Doc / Dr TLUD / Prof. Paul S. Anderson, PhD
Email: psanders at ilstu.edu
Skype: paultlud Phone: +1-309-452-7072
Website: www.drtlud.com
On 2/19/2015 9:33 PM, Julien Winter wrote:
> Hi All;
>
> This discussion about stove testing started off about "gaming the test".
>
> I doubt there are many stove developers who would want their test
> "gamed." What they would like to know is if their stove is reliable,
> or if it fail under certain conditions. It would be a bit of a
> nuisance to get a glowing report on your stove, only to discover later
> that it had problems.
>
> The question I ask is whether the protocols of the water boiling test
> 4.2.3 are sufficient? Do we need to be explicit about scientific
> methods, or do we just assume that "everybody knows that".
>
> I have attached a slide from the presentation I gave at ETHOS. Notice
> the range of gasification rates when a variety of fuels are used.
> What would you do to make sure that you are not "counting white swans"
> when conducting a water boiling test?
>
> Cheers,
> Julien.
>
> --
> Julien Winter
> Cobourg, ON, CANADA
>
>
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