band_on_the_runHow geologists collect lava
AFK BRB ChocolateIs that an OSHA approved hand over the face to keep from breathing the poisonous gas?
I’m kind of surprised it’s not hot enough to boil off all the water in that little bucket pretty quickly, bit obviously it isn’t.
I’m no lavatorial expert, but I’d guess the thermal conductivity of lava is relatively low. The high temp and high mass will keep it warm for a while, but water has a pretty high conductivity and capacity on its own. The agitation is distributing the heat too, well beyond the regular convection rate.
I would guess.
I’m not thinking that “lavatorial” is the correct word.
That conjures “lavatory”, which is something different.
For the science, yeah, more than enough water to cool the lava.
That’s just my experience. If someone does the math, I’ll love them.
Do what math? I honestly don’t know what you guy’s actually expect it to look like, so I don’t know where to start explaining.
Heat capacity of lava per degree Celsius per unit of mass
Multiplied by temperature differential vs ambient, multiplied by mass = total extra heat energy
Then you calculate the sum of heat capacity multiplied by mass for lava and for water, and calculate from that how many degrees above ambient the two masses will land at when combined as the extra energy above is divided over both (assuming water starts at ambient temp)
Okay. Then they add more and it will boil quickly. I guess the question boiles (huehue) down to how much water you can turn into stream per amount of lava or the inverse, how much lava you can cool down per amount of water.
The phase change from liquid water to stream will, by the way, not just contribute significantly but be by far the majority of energy needed. Simply heating water up, ignoring the phase change and changes of the heat capacity, with the same energy as it takes to go from liquid to gas (2257 kJ/kg) would result in a temperature rise of… dT = 2257 kJ/kg / 4.2 kJ/(kg*K) = 537 K
Assuming enough water that most of it doesn’t boil, then my math would still check out, but yeah, any substantial amount of boiling forces you do do the math in multiple steps to handle that