The Pyrex SS hybrid Wick
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guys that sheet has 10000 S/cm and 10000 Siemens = 0.0001 Ohm [Ω] so I dont think it will work
what worried me initially was "PGS is a competitive conductive sheet with high thermal conductivity and high flexibility"
what worried me initially was "PGS is a competitive conductive sheet with high thermal conductivity and high flexibility"
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Mine are wicked up right now, but if I remember it was about 2.4mm - 2.5mm. However the concensus seemed to be that the glass tube would not necessarilly go into the hole, but be above it. Big Screen D bought some 1.5mm tubing which he plans on sticking into the hole.
Soooo, you went ahead and did it anyway...
yeah....figured it would come in handy some day if it didn't work for this
Woh, that is hot. We may not dry burn that long, but what if if accidently fired for that period of time in your pocket...
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No it's and Ihybrid mech mod no vv/
i never dry burn for that long just did it to see how hot I could get the coil to answer the question about how hot could a coil get
This thermocouple is about 20 years old so I would be nice if anyone else could do a separate test to verify my findings I have no way to check accuracy of the equipment. Thermocouple is good for measuring up to 2000 deg f so this is well within its range to measure
you would feel it
I had to edit that post: 1048º F not Celsius; would be about 550ºC, but if it weren't for the ss wick in there, I'm sure it could go much higher - if you had cotton or silica. We're talkin' weinie roast...
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Just a repost on this because I think it was missed, and I don't think this is what we are looking for.
That would be 0.0001 Ohm/cm^2.
How can an estimate of resistance vs. actual contact area with the coil in a moist squishy environment be figured?
Right now, I'm calculated out (see below).
To my understanding that high of siemens number is considered not to be electrically conductive.
The higher the siemens the lower the ohms. I used an online converter here to make sure it was right
Well, wrap your head around this - if that is an acurate figure it is more conductive than stainless steel. And look what we have to go through with that.
That is not true. Siemens are the inverse of ohms (mhos).
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Per the 4th page in the mouser.com provided PDF on Panasonic Prolytic Graphite Sheets, page 4, the thermal conductivity (Watts/Meter-Kelvin) for PGS 100μm is from 600 to 800 in the X, Y directions. In the Z direction, 15.
http://www.mouser.com/pdfdocs/ThermalGraphiteSheets.pdf
Units of heat applied to the surface of a 1 cm square area of PGS 100μm will travel an average of 0.5 cm to reach the 1 cm edge of the area. The same energy will travel 0.01 cm to pass through the surface of the 100 micrometer sheet.
I'll give some bias to the X, Y directions and choose a value of 750 W/m-K.
10 Watts applied to surface and traveling in the X, Y directions will generate 10 Watts/0.005 meters = 2,000 units.
10 Watts applied to the surface and traveling in the Z direction will generate 10 watts/0.0001 meters = 100,000 units.
Now for the offered thermal coeficients...750 for X,Y and 15 for Z...
2,000 units x 750 = 1,500,000. 100,000 units x 15 = 1,500,000.
For the size of 1 cm x 1 cm and 100μm thickness, the energy traveling in the Z-axis is the same as the energy traveling in the X and Y axes.
This is proof enough for me that the Z axis contains significant thermal conductivity relative to the area of material as might be utilized in an SS Mesh wrapped wick. Further adding to the energy which might pass through the Z axis is the notion that the prolytic graphite sheet of 1 cm x 1 cm AND rolled into a tube would elimante the heat flowing out in the X and Y axes. That limit of the flow away from the mesh would create more heat than if we were dealing with an unbounded 1 cm x 1 cm area within a continuous sheet as would be implied by the calculations.
If thermal transmission capacity is the only criteria, I suspect the Graphite Sheets will work fine. Number of possible layer and such are beyond this illustration. While the thermal capabilities seem encouraging, there may be physical properties and possible electrical conductance concerns that remain to be understood more clearly. As well, the Graphite Sheets have a specified Heat Resistance value of 400 degrees C.
F.A.U.F. (Factual And Useful Formulas)
1 meter = 100 cm = 1,000 mm = 1,000,000 μm
1 inch = 2.56 cm
1 cm = 10 mm = ~0.3937" = ~3/8".
The circumfrence of a 3/32" diameter wick is about 0.748 cm or 7.48 mm
This poster reserves the right to edit the post as he sees fit.
you would feel it
I actually had that happen to me once with a TW screwdriver with an old Boge carto in my pants pocket.... Funny thing was I smelt it before I felt it in that instance. It was around that time I stared carrying around egos with the 5 click on and off instead.
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