Quote:
Originally posted by unregistered
"applied heat (load)"
not so well stated, intent was to consider that specific portion of the applied heat seen as a load by the wb
obviously the secondary path 'losses' are irrelevant to an assessment of the wb's performance
(they are consequential)
and for this reason the quantification of "W" must include an assessment of the secondary losses
this can be done with a heat die - and I do so - but is about impossible using a CPU
better ?
.........
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Fine.
Was not questioning the assessment of secondary losses.in your test results.
Sums for the Heat Die suggest any variation in load would be less than 1% in any wb's efficiency versus flow characterisation.
Dunno whether this correlation exists or is detectable.
Possibly of interest is that the R(insulation) of 15.375c/w corresponding to the experimental 98.4% absorbtion(1.6% loss) would be that calculated(Kryotherm) for a 50x50x90mm lump surrounded by 22.4mm thick layer of Polyurethane foam. Not sure but think this is not too remote from reality.