I generously considered that the insulation value was R6 in my analysis (an input in the spreadsheet), but much of that insulation may have been lost when the water leaked into the insulation. If you presume R6, and calculate the outside area of the eCat, the calculation of the heat loss is simple but it must be calculated as a function of temp difference between T2 inside the reactor and ambient temperature and thus is not constant (easy in the spreadsheet). Wet insulation being less than R6 would cause the convection losses to be underestimated. Mat Lewan put his hand on the top foil over the insulation and said that he thought it was about 60C. That information might be useful to back onto a better guess at insulation value, but it will not be as simple as presuming R6 to get a rough order of magnitude.
From: David Roberson [mailto:dlrober...@aol.com] The last escape source for heat generated by the LENR process is through the insulated casing of the ECAT. We are in serious need of assistance if we are to get a good handle upon this factor. I casually chose a leakage power of 500 watts for this process due to my ignorance of this form of heat loss. It is my hope that someone with more experience and knowledge of radiation, conduction and convection would help to arrive at a reasonable estimate.
