Clarification. I wrote:
In flow calorimetry it is not possible to measure the power of the > circulation pump, because the pump adds heat to the water before the water > passes the inlet temperature sensor. I meant the electrical and mechanical heat from the pump. That would be at the milliwatt level. There is also heat added between the inlet and outlet caused by the friction of the water going through the tubes. However, this would be at the microwatt level. No water-based flow calorimeter could measure it, under any circumstances. Also, this heat from friction would be the same no matter where the water pressure is generated, by a pump or gravity feed tank at the reservoir, or by a pump in the laboratory. Jones made another statement about this which I cannot understand: "It [the Rossi cell] will not work reliably without constant heat removal. Therefore, power input related to the proper operation must be included as P-in." 1. No cell can work without constant heat removal. Any cell will overheat and explode, even a blank cell being run for comparison. All calorimeter types except bomb calorimeters depend on constant heat removal to measure energy. 2. The power input related to the proper operation cannot be measured with flow calorimetry, and even if it could, it would be many orders of magnitude too small to be detected by these methods. - Jed
