Mizuno just sent me 18 hours of data with only the pump running and nothing else happening, from yesterday. He looked at several hours when ambient conditions were stable. He was able to measure a significant, persistent temperature elevation in the water and reactor of 0.5°C compared to ambient. This is a much better method than the one I used yesterday.
He determined that the calibration constant for this system in adiabatic mode is 0.4 W/°C. That is to say, an input of 0.4 W continuing indefinitely will eventually produce a stable temperature increase of 1°C. The persistent temperature elevation was 0.5°C, so the pump power is ~0.2 W. I will upload this new spreadsheet sometime in the next few days. I may add a paragraph to my report summarizing it. The next step is to estimate losses. - Jed
