Wire surface area calculator

[Caterpiller]

Has anyone found a surface area calculator for various wire lengths and gages?

I'm trying to see how much extra surface area I will have if I switch from:

24g, 3mm ID, 6wraps, SS316L

To:

22g, 3mm ID, 5wraps, SS316L

I started researching the math, but when I read this I decided I'd like a calculator:

'For any 2d shape 'pulled out' into a cylinder/prism, the surface area is twice the area of the base, plus the outside of the base (circumference or perimeter) times the length.'

 

[Caterpiller]

OK, I think I've found one:

CSG Surface Area Calculator

I'm using the cylinder (third one down)

So I just need to know the radius of any given gages (AWG). In SteamEngine there's a number to the right of the AWG, for SS316L 24AWG this is 0.511 - is this the diameter of the wire?

 

[Caterpiller]

Hmm...

Plugged in the numbers assuming the 0.511 was the diameter of SS316L 24g, halved it for the radius.

Did the same for SteamEngine's numbers for SS316L 22g.

The 24g came out at 122 units, the 22g came out at 141 units

That's only a 15% increase in surface area - does that seem right?

 

[Caterpiller]

Waiting for an expert to roll by.

 

[Letitia]

I can't answer your question. I can tell you ramp time is better with 26g or 24g 316l ss. I prefer 26g for ramp time. Much better IMO.

 

[vapdivrr]

I would just try both and see which one you like better. You can do all the technical figures, but it's not going to tell you which one vapes better.....

Sent from my SCH-I545 using Tapatalk

 

[VHRB2014]

Im not an eggsspurt, but I can tell you my sweet spot with SS came at 23 gauge. 24 just did`nt seem to send out a enough of a plum, and 22 is so low it takes a lot of it to get safe with, and then it taxes batteries ect. So I wind up using 23SS to replace 22k and I just need to add a couple of wraps and Im maybe 1 to 2 hundredths lower then I would be with the 22k and its been perfect (For me). Hope that makes sense, LOL.

 

[Wraith504]

Id say not much beats old fashioned kanthal parallels for surface area.

 

[ScottP]

Hmm...

Plugged in the numbers assuming the 0.511 was the diameter of SS316L 24g, halved it for the radius.

Did the same for SteamEngine's numbers for SS316L 22g.

The 24g came out at 122 units, the 22g came out at 141 units

That's only a 15% increase in surface area - does that seem right?

What did you use for the lengths? They will be different between a 6 wrap and a 5 wrap.

 

[Letitia]

I don't think I could go back to kanthal. Last time I used a kanthal drop in coil I'm familiar with I didn’t enjoy the vape. Took me about 10ml to figure out why.

 

[Coastal Cowboy]

The answer to questions like this is why God made engineers.

And if you don't believe me, just ask one.

 

[-KT-]

Coil wrapping | Steam Engine | free vaping calculators

But only on the advanced setting.

Sent from my R1 HD using Tapatalk

 

[Caterpiller]

Coil wrapping | Steam Engine | free vaping calculators

But only on the advanced setting.

Sent from my R1 HD using Tapatalk

Thank you everyone for your responses, but we have a winner @-KT-

 

[-KT-]

Thank you everyone for your responses, but we have a winner @-KT-

LOL, thank you!

I am new to all this and I have to admit spending a lot of time looking at surface area for different coil builds. I'm totally geeking out on all the science.

[emoji3]

Sent from my R1 HD using Tapatalk

 

[Bunnykiller]

effective surface area is the contact points of the coil and wick.... so.... that makes it even less and variable

 

[-KT-]

effective surface area is the contact points of the coil and wick.... so.... that makes it even less and variable

Doesn't e-juice also vaporize from the side of the coil that is *not* touching the wick?

Sent from my R1 HD using Tapatalk

 

[Zakillah]

LOL, thank you!

I am new to all this and I have to admit spending a lot of time looking at surface area for different coil builds. I'm totally geeking out on all the science.

[emoji3]

Sent from my R1 HD using Tapatalk

Knock yourself out:
Wire/coil gauge efficiency testing

So you think you can design a coil?

 

[Letitia]

Careful @-KT- ... you will soon become the go to guy.

 

[Bunnykiller]

Doesn't e-juice also vaporize from the side of the coil that is *not* touching the wick?

Sent from my R1 HD using Tapatalk

for a brief moment ... and then nothing

 

[Caterpiller]

So I went ahead and installed a:

SS316L, 3mm ID, 6wraps, 22g, Dual Coil @ 0.09ohms

I kept it at 430F but pumped the max power up to 140watts - and something interesting happened.

The TC refused to put more than 70watts through it - a little less power than it puts through my standard 24g coils.

It produced reasonable vapor, but no more than my 24g build, and there was a massive drop in flavour.

I suspect I've reached the airflow limits of my DotMod RDA's.

I love the DotMod but its not a cloud comp RDA, far from it.

Glad I tried it even if it just reaffirms that my 24g build is the prefect set up for my RDA (in my humble opinion)