Hi All: Maryyugo asked me to forward a response to Alan Fletcher's suggestion and since it seemed to be a constructive comment, I agreed:
See below: Ransom "Re: [Vo]:Re: Defkalion GT send video of internal testing Alan Fletcher, wrote: "Hmmm ... very cylindrical. I think that my Concentric Conductive Calorimeter would work quite well, and give the heat output as well as just a spot COP test. Summary -- wrap the hyperion in cylinders of highly conductive putty, then low conductivity putty and another high conductivity cylinder -- with the ends capped off by aerogel insulators. (I couldn't find anything exactly like my CCC in the literature). The inner high-conductivity cylinder evens out any hotspots/shape irregularities of the hyperion, and the outer evens out any difference in heat conduction/convection/radiation to ambient. The heat transfer is related to the radii of the middle cylinder and the temperature difference across it by a very simple formula. [ ISTR Q = k dT / ln(R2/R1) where k is the conductivity ] " Any specialist in heat transfer physics will find that ridiculous. Instead of the aerogel, cylinders of putty goop and all the other impossible mess Alan proposes, all you have to do is buy some of these (below) and stick them on the device under test with any thin high temperature glue or cementing material, then connect them to a simple and inexpensive data reduction card and any laptop. Commercially available: http://www.omega.com/pptst/HFS-3_HFS-4.html and http://www.hukseflux.com/campaign/heatFluxMeasurement/heatFluxSensor.html?gclid=CMSssbKq-K0CFQVwhwodsA7Tsw Generic info and do it yourself: http://en.wikipedia.org/wiki/Heat_flux_sensor
