Selfrunning cold electricity circuit from Dr.Stiffler

[DrStiffler]

@Dr. Stiffler,
Then I'm gonna compare it to the Stiffler PCB devices. If I can get my hands on one.  The VLT's are going in here too. 2nd batch Doc, 2nd batch,  I'm slow but doing it anyway. See if my results match up with those of the rest! Unless you haven't sold out of the first run. Drop me a note if that's the case but no hurry for me. 
I'm getting better by the session, trim a little here, measure a little there, tweak adjust and measure as much as possible.
I'm going to get it right on the boards too and then heat some water, just like I said. 

Comments, concerns, and criticisms welcome.

Best regards,

Jim

@Loki67671
This has got to be a calibration nightmare    An exciter running <2W most likely would not heat much other than the mass around it. Do you feel the glass is thermally more conductive than metal?

Wow! might want to rethink this a bit more, it you have a build in loss of 90% of what you produce your margin of error at 10%, don't think you will obtain readings that could correlate to anything outside of the error margin. If it would work you are looking add many, many hours per run to obtain some kind of an answer.

In my state if you had that big glass retort and did not have a lab license they would put you on the chain gang.
@

[Loki67671]

@Dr. Stiffler,
That I did not know , the glass vs metals so I was researching it, I appreciate the tips. But I have other metal containers in mind also. I picked the glassware up at a yard sale with flowers in them. 1000ml graduated cylinder too! $2.00 Perhaps some type of copper or brass tank? Pot? I'm open to suggestions.  Seated down in the tube? I was just going for it and judging by what I'm feeling just sitting here with it tuned. There is some definite warmth radiating away from the SEC. I figured that confined it would get pretty hot. I suppose I should look up the materials with the best thermal transfer properties, perhaps copper would be best? Or a completely different direction then? So you are concerned with too much mass sucking away the heat? Is it way overkill on the insulation?  My thinking was thermal isolation. But if there is too much mass to heat in the calorimeter body then you say there isn't enough left for accurate sensing? If I'm understanding correctly. Makes sense! Hmmmmm? I will have to think a bit more. 

Thanks Doc,

Jim

[DrStiffler]

@Loki
To get you started.

Specific Heat Capacity of Copper and some good basic info
http://www.chm.davidson.edu/ChemistryApplets/Calorimetry/SpecificHeatCapacityOfCopper.html

http://www.chem.latech.edu/~deddy/chem104/L5Calorie.htm

then there are many goo links that cover it all, but this is a good example

[ramset]

DR STIFFLER  since we will all need to be on the same page with calibrating and testing our Calorimetry   is there a way to do this  without breaking the bank?       Chet

[DrStiffler]

DR STIFFLER  since we will all need to be on the same page with calibrating and testing our Calorimetry   is there a way to do this  without breaking the bank?       Chet

@ramset
Hummm... Isn't 'Breaking the bank relative and subjective??

The unit itself can be built for under $20 if you have a Dollar store near you. The electronics, that is something different. If you want automation and want to graph results like every minute, etc., you will need about $200 worth of gear and a laptop or desktop to use as the computer.

Now there is no reason why you can not do it the old school lab way and use some glass thermometers and a pad and pencil, then type the data into a spreadsheet. You will still need the basic unit and some glass thermometers that maybe are $7 each (2).

The Styrofoam from a cheap picnic cooler or some shipping foam will work fine for insulation. Buying this stuff is not cheap I admit so if you have a few things around the house, great.

Unless you are a good tech, the active temp units can be a pain, they need to be RF shielded and the field around the exciter gets into almost everything so it can get real frustrating fast. Dollar for dollar and result for result, the cheap method would work well for a beginner and your results should be well above the error range.

I wish someone that does this kind of work would step forward and help with a design. Any takers???