[Stoves] radiant heat capture, total heat measurement

[Alex English]

Paul,
So this makes sense. The screen radiates away heat leaving a cooler gas 
beyond.
If your thermocouple were smaller or shielded the difference would 
likely be even greater because
the thermocouple looses  more heat from radiation when it is hotter.

Or are there other reasons, too?
Alex



On 14/03/2012 7:36 PM, Paul Olivier wrote:
> There are problems with what I have written below.
> Let me again.
>
> Without the dome, the probe encounters hot gases and registers a 
> temperature of 563 C.
> It turns red hot and starts emitting thermal radiation.
>
> With the dome, the probe encounter hot gases as well as thermal radiation.
> But it only registers a temperature of 500 C.
> It does not turn red hot.
> Therefore the probe does not absorb thermal radiation from the dome 
> very well.
>
> Thanks.
> Paul
>