Looks promising. https://mospace.umsystem.edu/xmlui/bitstream/handle/10355/36813/MassFlowCalorimetryAbstract.pdf
https://mospace.umsystem.edu/xmlui/bitstream/handle/10355/36813/MassFlowCalorimetryPresentation.pdfp. 19 shows 19 or 20 W excess. 20 W is a lot more than they saw previously. The mass of powder is much larger.
- Jed