Re: Water kettle energy consumption logging

Wu Ming <[email protected] > posted:

> legg <[email protected]> wrote:
> > For 'efficiency' in this case, the dominating factor is 
> > heat lost from the object, not rates or patterns of input.
> > 
> > Layers of insulation, lowering the external skin temperature 
> > will produce the best efficiency, regardless of the 
> > temperature within the container.
> > 
> > RL
> > 
> 
> We need hot water within seconds. We need it at boiling point for tea and
> also sanitation. The latter more for old mental habit than real threat I
> think. So a kettle with instant heating capability won’t do. We need a
> reservoir of water at almost boiling point readily available. 
> 
> Kettle has insulation already. Possibly because of the 6 hrs delay option.
> I won’t add more insulation to it. 
> 
> If mass and insulation aren’t further optimizable what is left is
> temperature. We don’t use hot water form the kettle all the time. Hours
> pass by without any use. 
> 
> 98° is the operating temperature. I can temporarily lower it to 90°, 80° or
> 60° for the lengthy periods we don’t expect the need for water at 98°. Or
> let it fall for six hours straight. Is it worth it? Will try estimate using
> the producer’s data I discovered yesterday. Fallback options are measuring
> heat loss over time with a meat thermometer. Or directly measuring energy
> required at the plug.
> 
Just buy water kettle with thermometer.

I use one to boil eggs

I set 90 C
to make temperature rise under boiling point
than wait 1-2 minutes
to make inner air gap to leave

and rise temperature to 100 C