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OverUnity Research > Benches > ION (Moderator: ion) > Comments: Differential Thermal Analysis for ECAT Testing
2024-11-26, 12:34:53
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Author Topic: Comments: Differential Thermal Analysis for ECAT Testing  (Read 1709 times)
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img  ion
Comments: Differential Thermal Analysis for ECAT Testing « on: 2015-03-20, 15:39:48 »
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It's turtles all the way down
Comments can be posted here, the main thread will be locked until it is fully developed.

Regards, ION


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"Secrecy, secret societies and secret groups have always been repugnant to a free and open society"......John F Kennedy
   
img  TinselKoala
Re: Comments: Differential Thermal Analysis for ECAT Testing « Reply #1 on: 2015-03-24, 04:14:59 »
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It looks good to me, both in concept and in the "fleshed-out" experimental design. I have long been urging that the ECAT experimenters should use simultaneous side-by-side identical Control (blank) and Experimental (fueled) reactors powered by the same supply and monitored by the same sensing techniques (preferably multiple techniques) in their experiments, but I never went into the entire experimental apparatus design in the way you have done. Since the recent Parkhomov report I think this is becoming a "hot topic" once again and it does seem to be within reach of the "garage laboratory" experimenter.

I am worried a bit about the casual way that Park handles his reagents, and in some parts of the world (like mine) the use of LiAlH4 by individuals for anything will attract the attention of certain government agencies that we certainly do not want to be dealing with. However certain established labs that I know about may be able to use it without too much trouble.

https://docs.google.com/document/d/1BbE6V6HKHC3NOOSJmI9QEgP3H5EXcuGDPNn5Oc787RQ/edit
   
img  ion
Re: Comments: Differential Thermal Analysis for ECAT Testing « Reply #2 on: 2015-03-24, 14:35:22 »
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TK

Thanks for your interest and comments. I have about half a dozen methods that the experimenter can develop using off the shelf power resistors (20 Watt Ohmite with through hole), as well as the hand wound Nichrome  / alumina tube versions. My holdup right now is developing a suitable pressure container for about a gram of the active material. I have the design worked out, but lack the time to machine it. I don't want to do the testing indoors, as I don't have a fume hood or proper shielding, so I will run the test outdoors when warmer weather comes.

The 50 Ohm 20 Watt Ohmite resistors will get you to a little over 1000 C when operated off the 120 Volt line, I used these in some original tests last year, using a ramp / soak temperature controlled profile for the reference heater, the sample heater followed precisely, with a rheostat of 5 ohms providing a differential trim for tracking accuracy. I have posted all this work in one of the private threads.

I have plenty of alumina and mullite tubing on hand, many sizes, and a good stock of Nichrome V and Tungsten wire, as well as spools of high temperature K thermocouple wire and extension grade  K T/C wire.

I haven't gotten around to posting all of the details of the latest test setup, as I have been working on an "in depth" critique of the Parkhomov test, and will post that soon.

Attached are some of the earlier test setups.

Thanks again, your interest is deeply appreciated
« Last Edit: 2015-03-24, 15:17:58 by ION »


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"Secrecy, secret societies and secret groups have always been repugnant to a free and open society"......John F Kennedy
   
img  verpies
Re: Comments: Differential Thermal Analysis for ECAT Testing « Reply #3 on: 2015-03-24, 15:43:33 »

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Quote from: TinselKoala on 2015-03-24, 04:14:59
It looks good to me,
It looks good to me, too.

Quote from: TinselKoala on 2015-03-24, 04:14:59
I am worried a bit about the casual way that Park handles his reagents, and in some parts of the world (like mine) the use of LiAlH4 by individuals for anything will attract the attention of certain government agencies that we certainly do not want to be dealing with.
Yeah, that oppressive agency in that country has real affinity for ephedrine and LAH.
They would never believe that you are after energy rather than "work".

Quote from: TinselKoala on 2015-03-24, 04:14:59
https://docs.google.com/document/d/1BbE6V6HKHC3NOOSJmI9QEgP3H5EXcuGDPNn5Oc787RQ/edit
So he is using helical heater windings.  Such helix makes a nice electromagnet that not only generates magnetic field but also has inductive reactance, which complicates input power measurements with AC.  
A DC for the heater power supply would be more certain, but then the heating solenoid would not produce an AC magnetic field ...who knows whether this matters or not?
   
img  ion
Re: Comments: Differential Thermal Analysis for ECAT Testing « Reply #4 on: 2015-03-26, 19:05:02 »
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From Verpies:

Quote
So he is using helical heater windings.  Such helix makes a nice electromagnet that not only generates magnetic field but also has inductive reactance, which complicates input power measurements with AC.

I think the inductive component may be small enough that it won't be a problem at 50 / 60 Hz. My heaters are on the order of 2.5uH or less. Not that many ampere turns so the magnetic field is weak. I usually measure a near unity power factor at 60 Hz, even with the transformer in the loop. Of course it is a very high quality,  tightly coupled transformer made to General Radio specs.
« Last Edit: 2018-01-15, 18:01:31 by ION »


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"Secrecy, secret societies and secret groups have always been repugnant to a free and open society"......John F Kennedy
   
img  ion
Re: Comments: Differential Thermal Analysis for ECAT Testing « Reply #5 on: 2018-01-15, 18:00:30 »
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This attached paper is very close to what I was doing back in the fall of 2014 before the proverbial SHTF.

Only problem I see is they are not running a "control with dummy fuel" tandem to the active cell as in my experiments.

http://www.overunityresearch.com/index.php?topic=2883.0

Rather they choose a single cell and water calorimetry which makes calculation of small heat gains easily lost in the 'noise".

My preference for many reasons has always been the dual cell differential method.

Regards

« Last Edit: 2018-01-15, 19:30:18 by ION »


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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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