I just posted this at OU in response to "Fuzzy"
Fuzzy
Your tabular data for the temperature rise above ambient vs power input of your nicely hand wound resistor is a starting point. You used your bench power supply for this.
Now using the same power supply, run the Ainslie circuit and note the power being used on the same meters .
No need for batteries and a DSO and all that number crunching and cherry picking of "preferred data" out of the noise.
You could also do a number of control experiments using non "Ainslie" resistors, such as pure carbon tubular rods of the same size,shape, and resistance. don't forget to take into account "emissivity differences".
There are special paints you could use in an attempt to normalize the differences in resistor surfaces so that your IR thermometer gives consistent readings.
My main point is that you are using one piece of equipment (a power supply) to measure power input to the device under test, then switching to a battery and DSO, cherry picked and crunched data readings for your "proof".
This would lead to suspicion in a scientific test.
Get rid of the battery. If necessary, put a large filter cap on the output of your power supply to simulate the low impedance and high peak current capacity of a battery.
This would be convincing to me, not hours of live broadcasts of a DSO in operation.
You could also double check by putting a Kill-O-Watt meter on the line side of your power supply.
To switch instrumentation from the power supply to the DSO is a little slight of hand and suspicious.
I am not against DSO's, and have a few that I use, but a more down to earth and less noise sensitive approach would be more meaningful to me.
For Rosemary to imply that a simple test setup may be acceptable to simple people like myself but never to academia is a bit of an insult, considering I've had over 40 years of temperature and power measurement skills and would like to believe I am rather good at it.
Throughout the history of science, researchers have devised very simple and excellently crafted devices to make extremely fine measurements. This is way before DSO's were available.
Granted a DSO in the hands of a highly experienced individual can give excellent results, but that individual should also have lots of savvy in proper breadboarding techniques so that his "noisy" setup does not skew the DSO data.
I find it difficult to fathom that the "Ainslie team" believes in a COP>6 for the device. If that is so you should be scaling this up and taking over the world in the home heating industry....far better than heat pumps. I don't see anyone having enough faith to jump on this.
Kind Regards....V
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"Secrecy, secret societies and secret groups have always been repugnant to a free and open society"......John F Kennedy
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