So im new to vaping, i started only 1 month ago and recently when i bought a new e-liquid with VG / PG ratio - 70/30 0mg i started to feel that the vapor that comes out got really hot. I use eleaf ijust 3 i use HW-N 0.2ohm 40W~90W coil and the e-liquid i used before was with VG / PG ratio - 50/50 3mg. Any ideas on how i can fix this. Also when i vape the tank gets way more hot than before.
You have a fixed voltage device which means the resistance of the coil dictates the power output which in turn can dictate how hot your vape is. Higher the power, the hotter the vape. This is not necessarily a bad design, one of my favorite devices is also fixed voltage. This just means you are challenged in finding the right coil that suits your vaping style. There maybe some trial and error in finding that coil.
Also with a fixed voltage, as your battery starts to drain so does your power output. Eleaf does not give the voltage specifications of your device (that I was able to find) but generally this will be in the range of 4.2 volts at full battery, down to 3.2 volts.
On a fixed voltage device, higher resistance does equate to lower power output. However, keep in mind that mass of the coil also plays an important part and that higher mass requires more power. We do not know the mass of these coils so we are back to trial and error.
You can use Ohms law to get an idea of what your power output will be based on the resistance of the coil. Steam Engine has excellent calculator (link below) but let’s look at 2 examples.
HW-N coil at 0.2 ohms
4.2 volts (full battery) = 88 watts (your device caps this at 80 watts)
3.2 volts (low battery cutoff) = 50 watts
HW2 Coil at 0.3 ohms
4.2 volts (full battery) = 58 watts
3.2 volts (low battery cutoff) = 34 watts
Ohm's law | Steam Engine | free vaping calculators