Hi Bob, On Fri, Mar 20, 2015 at 9:21 PM, Bob Cook <frobertc...@hotmail.com> wrote:
> Alberto-- > > You are correct that voltage and current gives integrated power in the > section of the coil between the voltage drop measurements. However, if > your are interested in local power generation in the active region where > the fuel is, you need to know the resistance in that region and hence its > temperature together with the current to determine power applied to the > fuel. > Actually, the resistence of heating wires varies very little with temperature. In the case of Kanthal A-1 (that MFMP was using), it increases by a factor of only 5% from 100 to 1400 degress Celsius (see http://kanthal.com/en/products/material-datasheets/wire/resistance-heating-wire-and-resistance-wire/kanthal-a-1/). So, considering a high COP (3), this control-variable variance (the wire resistance in the reactors) is negligible. Alberto. > Bob > >
