David Roberson <[email protected]> wrote: Using that delta we would have 2 watts of excess heat leaking into the > system.
>From the pump? That is plausible. ~1.5 W from the mechanical work of the impeller, and ~0.5 W from motor heat conduction. However, I hope you now agree that this will not affect the adiabatic calorimetry, given that the temperature was so stable for 28 hours. I was astounded to see it was so stable! Any heat pulse or anomalous heat will be on top of this baseline. > Perhaps the thermometer output varies in accurate steps of .01 degree > increments? I doubt that. It is coming from a 1980s vintage HP A/D interface. I do not think that was limited to 2-digit accuracy. Watch out for your spreadsheet settings. I think I uploaded it set to round to the nearest 0.01. Change the setting and you will see more digits appear. I do not know how many are significant. It does not take much to throw off the air temperature measurements. Move a fan or a space heater a little and bang, you have a half-degree change. It is fortunate the reactor is under such heavy insulation. - Jed
