The Pyrex SS hybrid Wick

[dsy5]

That is how I interrupted the documentation as well, but the video and my understanding of a heat sink contradicts that.

If you go to the link and look on the right, there are links to application pages. It in fact does show this material being used between a semiconductor and a traditional heat sink. I am ready to admit I may be wrong about this material, but here we go again - another avenue that requires getting a sample to try out.

 

[Cool_Breeze]

Thermal Conductivity (W/m K) <-- I lack the proper context to understand that and the associated information in the circumstance of a flat sheet.

...but I think I do now. I'm offering the following generalized statement regarding the properties of the material on a scale relevant to the use we are discussing here.

A square area of PGS 100μm, 1 cm on a side will pass approximately the same amount of energy through the flat 1 cm square surface as will pass beyond the 1 square cm area laterally.

 

[bapgood]

If you go to the link and look on the right, there are links to application pages. It in fact does show this material being used between a semiconductor and a traditional heat sink. I am ready to admit I may be wrong about this material, but here we go again - another avenue that requires getting a sample to try out.

Don't get wrong i have serious doubts that PGS is the ultimate answer for us, but not for some of the reasons being implied.

I wouldn't suggest at this point everyone ordering some, but i was intrigued and thought it was worth a closer look.

 

[dsy5]

...but I think I do now. I'm the following generalized statement regarding the properties of the material on a scale relevant to the use we are discussing here.

A square area of PGS 100μm, 1 cm on a side will pass approximately the same amount of energy through the flat 1 cm square surface as will pass beyond the 1 square cm area laterally.

I don't see where you came up with those numbers or the energy passing ability - can you explain?

 

[bapgood]

...but I think I do now. I'm the following generalized statement regarding the properties of the material on a scale relevant to the use we are discussing here.

A square area of PGS 100μm, 1 cm on a side will pass approximately the same amount of energy through the flat 1 cm square surface as will pass beyond the 1 square cm area laterally.

Cool, Im glad you understand it....because I don't....and I couldn't quite follow above statement....but I think your saying you somewhat approve

 

[dsy5]

Don't get wrong i have serious doubts that PGS is the ultimate answer for us, but not for some of the reasons being implied.

I wouldn't suggest at this point everyone ordering some, but i was intrigued and thought it was worth a closer look.

I agree with you 100%. Although it says it can take 400ºC - I still haven't gotten a straight answer on how hot a coil can actually get in real world use. Anybody got one of those infrared thermometer thingies? Do they even read that high(I would think scientific ones should)?

 

[MattB101]

Another matter is with the PGS Graphite Sheet may be the minimum bending radius.


Wait...I'm already semi-detached.

Don't forget separation of coil and wick is in there somewhere.

Sent while sitting on my .... in my living room vaping away!

 

[bapgood]

I agree with you 100%. Although it says it can take 400ºC - I still haven't gotten a straight answer on how hot a coil can actually get in real world use.

Yeah me either....It all depends on how efficiently the heat is transferred to wherever the juice is getting vaporized, and the temp that the juice vaporizes.

I will hit a coil with my IR temp gun but I don't think it will be very accurate. Im sure there is a way to determine heat based on watts supplied and coil ohms but I haven't researched that yet, but my sphincter is telling me it is less than 400c/750f

 

[MattB101]

While our application differs from the intended purpose, it there in fact information which supports the notion that the material doesn't pass sufficient heat along the Z axis for our situation?

Cool,
Check out the info in this PDF


http://www.mouser.com/pdfdocs/ThermalGraphiteSheets.pdf


Sent while sitting on my .... in my living room vaping away!

 

[dsy5]

Yeah me either....It all depends on how efficiently the heat is transferred to wherever the juice is getting vaporized, and the temp that the juice vaporizes.

I will hit a coil with my IR temp gun but I don't think it will be very accurate. Im sure there is a way to determine heat based on watts supplied and coil ohms but I haven't researched that yet, but my sphincter is telling me it is less than 400c/750f

I would imagine that, on a dry burn, it could get pretty hot. I've had my mesh red hot doing dry burns to clean the coil off.

 

[CloudChaser]

Hi all
I have an OTC meter with a thermocouple, it's pretty old so it may be off a bit but with a dry burn for about 30 seconds I had a max temp of 800 F on a fresh 18350

Hope this helps, this was using a Ihybrid twisted 32g 3/4 wrap

 

[MattB101]

As I read it the graphite sheet is designed to spread the heat horizontally over a larger area thereby allowing more efficient transfer into the whole heat sink rather than just on top of the object being cooled. Therefore it spreads heat horizontally better than it radiates into the z axis. Not to say it can't be efficient in our desired use but the question is how efficient? The numbers for x and y are considerably larger than z. If z was as large there would be minimal spreading effect when attached to the heat sink.

One thought that occurred to me was that the numbers MIGHT actually make it better suited to our purpose by actually spreading the heat over a larger area of wick, thereby creating more vapor as well as insulating the coil from the wick electrically.

Sent while sitting on my .... in my living room vaping away!

 

[bapgood]

Hi all
I have an OTC meter with a thermocouple, it's pretty old so it may be off a bit but with a dry burn for about 30 seconds I had a max temp of 800 F on a fresh 18350

Hope this helps, this was using a Ihybrid

Helps a ton! Thanks very much

 

[bapgood]

Well mouser seems to be on the ball....I ordered about four hours ago and just got an email saying it was being processed in the warehouse and will ship out today.

 

[tmcase]

Derail alert! I want out of the mini scubagen RA co-op. I'm tired of waiting for something I don't really want anymore. I'm giving up on geneses. PM me if interested.

Carry on.

 

[mekks082]

Quick question, with the DUD... Does the 3mm pyrex fit? or does the wick hole need to be drilled out?

 

[TBinAZ]

Wow, this stuff is getting deep. Y'all sound like mad scientists. Nice work.

So today I received the final notification that the fused quartz is on the way. No clue how long it will actually take to get here, but I have a good feeling. Received some fresh diamond bits and pieces today, so I should (hopefully) be all set. Everyone who has sent me their info in a PM so far is in. The amount of orders at the moment appears to be a fair bit less than I anticipated, so I will have to make a judgement call regarding increasing the number of pieces per, or the length each. Most are requesting the length as 30mm, so I will be contacting those who explicitly asked for 15 to see if it's still a requirement. Stay tuned...

I can take a good number more orders, so don't be shy.

 

[CloudChaser]

Put in a fresh 18650 and with one minute of dry burn was able to get 1048 deg F

 

[TBinAZ]

Man, right now there are so many DUDs, CHUDs, ChIDs, DIDs out there, I'd say you may want to be a bit more specific. Any idea what the approx size of the wick port is on yours right now? May be kind of a moot point right now as you're probably vaping it as you type...

Quick question, with the DUD... Does the 3mm pyrex fit? or does the wick hole need to be drilled out?

 

[dsy5]

Well mouser seems to be on the ball....I ordered about four hours ago and just got an email saying it was being processed in the warehouse and will ship out today.

Soooo, you went ahead and did it anyway...