|
Todays test stand lashup consisted of the $18 REX C100 temperature controller driving a 150 Ohm ten watt resistor directly switching mains power to the resistor from the internal mechanical relay.
While the 150 Ohm ten watt resistor was adequate for these tests, in actuality a 20 Watt Ohmite would be used.
The "K" thermocouple was placed into the resistor hole.
Companion to the test is the Intertek power meter registering all necessary power parameters, including elapsed time and elapsed kWHr.
At 120 Volts line, this setup used about 103 Watts, about 1 Watt for the controller.
Nice thing about the Intertek is that it has high resolution of elapsed kWHr (to 1 WHr) as well as better resolution of other parameters over the P3 International Kill-A Watt meter.
With the 150 Ohm resistor, a bit over 900 C is possible, I was able to get to 1000 C. Probably 100 Ohms would be good for well over 1000 C (220 volt users, size the resistor appropriately). With a bit of insulation even better power to temperature ratio can be had. This test as shown was with the resistor uninsulated in free air.
With this small 10 Watt resistor, about one inch of the center portion glows evenly orange, outside and inside, suitable for a small test sample.
So for under $50 here is a test setup that will give reasonably accurate data for LENR ECAT type temperature testing.
With a setup such as this, you will be able to get a good comparison of a sample run against a control run.
I still need to derive the the best PID (proportional, integral, and differential) settings for optimum control with this particular heating rate.
A low cost $35 Thermocouple to USB converter can be added for computer logging, charting if desired, otherwise a lab book and pencil will suffice. You could also run the thermocouple signal to a paper strip chart recorder if one is available.
I'll leave it to others to search for a suitable low cost particle detection monitor to complete the "poor man's ECAT test"
Note: Real time, quantitative power generated by the active exothermic sample can be derived by noting the cutback wattage value as compared to the reference run wattage vaue for a given target temperature.
« Last Edit: 2015-03-26, 20:59:53 by ION »
---------------------------
"Secrecy, secret societies and secret groups have always been repugnant to a free and open society"......John F Kennedy
|
feature is available which provides a place all members can chat, either publicly or privately.
Author
Topic: ECAT Testing Using A Single Heater (non differential) (Read 1318 times)
