I saw the picture of the inside of the customer's facility with its big black box. It caused me to consider the possibility that the heat was stored. Imagine an immense store of water as big as the entire black box. If Rossi produced 1 MW of heat continuously, what would the numbers look like?.
OK, with 1MW of heat, that would be 8.64E10 joules/day and over the course of the 350 day test, that would be a total of 3E13 joules. If the room was filled with water that began at 25C and was heated to 60C over the course of a year, with good insulation and no heat leakage, that would be 35C of heating and would require 1.47E5 joules/liter. To absorb all of that heat, would take a total of 2.1E8 liters of water or 7.2E6 ft^3. So how big was the black box? Visually I would guess it was it was 100' x 50' x 8' which is a volume of 4E4 ft^3. This is more than 2 orders of magnitude smaller volume than would have been required to store all of that heat in water up to 60C. If this water in the black box were heated to 95C, it wouldn't change much of anything (only a factor of 2). Conclusion would have to be that there was change of state of some large mass of something to store the heat, or the heat was discharged to outside the building.
