thank you for the advice.
Gus
________________________________
From: Crispin Pemberton-Pigott <[email protected]>
To: 'Discussion of biomass cooking stoves' <[email protected]>
Sent: Sunday, January 6, 2013 3:58 PM
Subject: Re: [Stoves] Thermometers for WBT
Dear Tom
Please get something with a decent thermal mass. The tiny wires spot-welded
together at the end are not very helpful at getting the temperature because
they fluctuate so rapidly when the bubbles start rising. It should have an
enclosing metal jacket of 3-8mm diameter. They still react quickly but not
‘instantly’.
I have also found that mounting it in the centre of a pot also heated in the
centre (from below) gives misleading numbers. Prof Lloyd says there is actually
no such thing as the boiling point of a whole pot of water. My conclusion is
that the best we can get is the time at which the average temperature reaches
its maximum. Using only one thermocouple in a round pot, it should be placed
somewhere like 1/3 of the diameter towards the centre.
Regards
Crispin
From:Stoves [mailto:[email protected]] On Behalf Of Tom
Miles
Sent: Sunday, January 06, 2013 2:49 PM
To: [email protected]
Subject: [Stoves] Thermometers for WBT
What are the lowest cost and most practical thermometers for the WBT?
Many thanks
Tom
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