[Stoves] Water boiling test water vaporized

Mike Hatfield apromike at gmail.com
Fri Oct 4 15:48:14 MDT 2013


Hey Lanny,

The thermal efficiency takes into account temperature of water and water
vaporized so as long as you take a temperature reading at the same time you
take the weight then it should not matter as the change in water vapor
should correspond to a drop in water temp.

best,

Mike.


On Fri, Oct 4, 2013 at 2:37 PM, Lanny Henson <lannych at bellsouth.net> wrote:

> **
> ********
>
> *Water boiling test, water vaporized. *
>
> *I did a water boiling test without simmering, I just heated water to a
> boil.*
>
> *I weighed the pot immediately after boiling and it had lost 140 grams.*
>
> *I let the pot sit  on the ground for a few min with no lid, and weighed
> it again. The pot had lost another 100 grams without being on the stove.*
>
> *So the timing of when the pot is weighed at the end of a test can be a
> factor.*
>
> *A solution may be to place a lid on the pot immediately at the end of
> the test.*
>
> *Lanny*
>
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-- 
Mike Hatfield
Director of International Projects
(541) 357-9857
Aprovecho Research Center
www.aprovecho.org (stoves)
www.aprovecho.net (education center)

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