I wrote: "No, the Kill-a-watt goes between the control electronics and the wall socket."
Technically, the power should be measured between the PLCs in the control box and the resistance heaters in the cell. When you measure at the wall, you overestimate power input because some of it is expended as heat from the PLCs, which are outside of the inlet-to-outlet area. However, the energy expended by the PCLs is negligible so this does not matter. It is easier to measure power at the wall socket. There are, of course, very tiny inputs such as the heat from overhead lights and people's bodies. There are also gigantic outputs not captured by this calorimetry, such as heat radiated from the Rossi device body. My guess is that this calorimetry recovers ~95% of the heat when the temperature difference is ~5°C, which is ideal for flow calorimetry. Stephen A. Lawrence <[email protected]> wrote: > Say WHAT? You just "proved" that all pipes inside the ecat are > *frictionless* !! > Actually, if you read what I wrote previously, and repeatedly, I said that a tiny amount of heat transfers, in the milliwatt range, from friction. However that is many orders of magnitude smaller than you can measure with a calorimeter designed for kilowatt-scale reactions. You would need a microcalorimeter to detect the friction of water in these pipes, even at 1/L second. > In fact, what you would find if you could take *extremely* precise pressure > measurements all along the pipe, is that the pressure of the water DROPS, > very gradually, as you move along the pipe away from the pump. > That's what I said. - Jed
