Quote by Martin Fleischmann Memorial Project<https://www.facebook.com/MartinFleischmannMemorialProject>: We need to do a LOT more testing over the next 2 days. Right now, we need to better understand why the Lugano report writers thought they were correct in using such low values for the emissivity when the Optris and Williamson point to around 920ºC with a spot of known 0.95 emissivity and that that is not far off the rest of the temperatures. By setting to lower value MUCH higher temperatures are apparently seen.
The Williamson on HUGnet reads lower than it should because of the conversion. it was within 10 degrees of the optris when on the known emissivity spot. The external B-Type thermocouple is inline, but lower as expected because of losses in the support wires and because it cannot see the hottest point. The key fact shown in "DB-Calibration_16.jpg" when input power is 0.89kW, is the internal B type thermocouple, that was reading the internal temperature showed a little over 1300ºC, therefore it is not possible that the external temperature could be 1276ºC (emissivity of 0.7) or 1524ºC (emissivity of 0.45) https://www.facebook.com/MartinFleischmannMemorialProject/posts/916638728366827?comment_id=916722188358481¬if_t=feed_comment Mats www.animpossibleinvention.com<http://www.animpossibleinvention.com> Från: Jed Rothwell [mailto:[email protected]] Skickat: den 4 februari 2015 17:02 Till: [email protected] Ämne: Re: [Vo]:Notes from MFMP Lugano Thermal Verification -- emissivity should have been .95? Quote from Notes: "The main revelation was that the emissivity required for the camera to correctly interpret the temperatures on the surface was very close to .95. When we plugged in the emissivities cited from literature in the Lugano report (0.8 to 0.4), the apparent temperature was 1200 to 1500C at 900W in. Is our cast alumina significantly different than other alumina materials? Tomorrow we can compare several temperatures at once on a 1/2" OD alumina tube that we purchased from McMaster Carr. . . ." Uh oh. That does not sound good for Levi et al. - Jed
