Why does a subtank use more liquid?

[Traijan]

Hey,

I need help to settle a discussion over here. I asked my partner how much juice he's using now, since it seemed just like yesterday that he bought another bottle of his favorite liquid (it was actually Tuesday, and today is Friday) and he said that it's because of the Subtank.

I suggested that since we both like the Subtank maybe he should build his coils on the rba deck to something like 1.2 Ohm instead of the 0.4 to 0.5 Ohm that we've been building at and he said that would not lower the liquid consumption and that he believes it's purely because he's using the RBA itself.

I believe it's because he's using a low Ohm coil and that building to a higher resistance (and thus lowering the wattage needed to use that coil) will in effect lower the liquid consumption assuming he doesn't toot on it more than before.

So, is it just the fact that he's using the RBA deck that is causing the larger liquid consumption or is it because he's using a lower Ohm coil build on that RBA deck? He's telling me that when he uses the pre-built 0.5 Ohm coils that it doesn't use as much liquid, but that seems odd to me since I always thought that more liquid consumption is based on the lower Ohm coil and the higher wattages used on those lower Ohm coils.

Who can concisely explain the higher use of liquid in a subtank?

Thanks

 

[smacuser]

YES.

 

[smacuser]

Lower ohms use more juice.

 

[Traijan]

That was certainly concise and what I first tried to say to my partner but he's not buying it. Why do lower ohms use more juice? And if you use a higher Ohm coil with the RBA, will the juice consumption go down (assuming lower wattage)? Is that what you were saying "YES" to?

Thanks for the reply

 

[bluecat]

Typically, lower owns equal more power. More power equals more heat which in turn liquifies the liquid faster meaning more liquid is used. There is more to it than that such as length of wire and such but that is the basic. You can still build a low ohms coil and run less power.

Generally more liquid is more vapor and flavor at the simplest level.

He is telling you incorrectly. You were corrwct.

To lessen the cost diy helps.

 

[Fit_Four_Life]

Is he using the subtank on variable voltage / variable wattage mod?

If using a mod in variable wattage mode, at a set wattage, then I believe in theory since the wattage (the rate at which energy is generated or consumed) is constant regardless of the atomizer resistance, it should not consume more or less juice with a different resistance coil.

If the mod is in voltage mode at a specific set voltage, then changing the coil resistance will change the wattage at the coil which will in theory change the rate of juice consumption.

 

[Rabbit Slayer]

Is he using the subtank on variable voltage / variable wattage mod?

If using a mod in variable wattage mode, at a set wattage, then I believe in theory since the wattage (the rate at which energy is generated or consumed) is constant regardless of the atomizer resistance, it should not consume more or less juice with a different resistance coil.

If the mod is in voltage mode at a specific set voltage, then changing the coil resistance will change the wattage at the coil which will in theory change the rate of juice consumption.

But someone that is vaping on a 1.2Ω coil and one vaping on a .5Ω coil will be vaping at different watts and if you tried to vape them at the same wattage, either one with hit weak and one will hit good or one will hit good and one with burn the hell out of your juice

 

[Fit_Four_Life]

But someone that is vaping on a 1.2Ω coil and one vaping on a .5Ω coil will be vaping at different watts

No they will not be vaping at different watts *IF* they are using a mod in wattage mode set to a specific wattage just like I mentioned previously. I don't think you read clearly what I wrote.

if you tried to vape them at the same wattage, either one with hit weak and one will hit good or one will hit good and one with burn the hell out of your juice

I use several subtank minis and use coils anywhere from 0.5Ω to 1.5Ω and they both produce similar Vapor to me at the same wattage. I only use my mods in wattage mode.

 

[tj99959]

At a given wattage, if you change the resistance, you will also change the voltage, and consumption will remain basically the same.

A different wattage is what will use more or less juice.
a 2.0 ohm coil would use about ~3ml/day (7-8 watts)
a 0.2 ohm coil would use about ~30ml/day (70-80 watts)

 

[Rabbit Slayer]

I use several subtank minis and use coils anywhere from 0.5Ω to 1.5Ω and they both produce similar Vapor to me at the same wattage. I only use my mods in wattage mode.

Lets say, 15W is what we will be using... The 0.5Ω coil will be at 2.74V, the 1.2Ω coil will be at 4.24V. Are you really trying to tell me you can't tell the difference between the two?

 

[Fit_Four_Life]

Lets say, 15W is what we will be using... The 0.5Ω coil will be at 2.74V, the 1.2Ω coil will be at 4.24V. Are you really trying to tell me you can't tell the difference between the two?

In the scenarios above both coils are consuming almost exactly the same power (the rate at which energy is generated or consumed) Are you really trying to tell me the vape will be that different?

I just switched my tanks on my istick 40w which is set at 12.5 watts. The first tank is a kanger subtank mini with a coil reading 1.16 ohms, the other tank is a Lemo 2 with a coil reading 0.56 ohms. Both tanks are producing similar vapor density, similar vapor heat and similar strength of flavor.

 

[Rabbit Slayer]

My Atlantis hits like a feather at 15W, not enjoyable for me at all

 

[The Eciginator]

Lower ohm coils burn hotter, so I would assume juice is vaporized at a faster rate than a higher ohm coil that's cooler at the same watts. The higher ohm coil uses up my battery faster than the lower though!

 

[jpargana]

I guess it might depend if you're using a mech or a regulated mod.

Mec? Of course. Lower ohms means more amps, therefore more power at the same battery voltage.

More power, of course, means more liquid is vaporized.

On a regulated, I'm not so sure. VW makes sure that you still get the same power, regardless of the coil resistance.

OTOH, lower resistance coils are usually made by placing two parallel coils (A 1.0 ohm is usually a single coil, a 0.5 ohm is usually TWO 1.0 ohm coils in parallel). So now you have TWO coils in the deck, with FOUR cotton tips so soak up juice. If it was in a mech, in theory you would be spending twice the juice (Two coils, twice the amps running thru the circuit, and the SAME amps running in EACH of those coils - only now, there's two of them, just like if you simply placed TWO separated, single coil devices in your mouth to vape)

Maybe even in a regulated that makes some difference too, regardless of the power setting

 

[Bunnykiller]

well it also depends on how long one draws on the atty too... I normally take 4 second draws... Ive seen clouderz inhale for 15 seconds on mechs... you can actually watch the level in the tank drop after several draws

 

[iowajosh]

Yeah, also more airflow makes you use more juice.