Calculating Water Evaporation from Clay Pots

  • Thread starter Thread starter KeKe29
  • Start date Start date
  • Tags Tags
    Evaporation Water
AI Thread Summary
The discussion centers on calculating the temperature change inside a small clay pot placed within a larger pot filled with wet sand. The user explains that water evaporation from the sand cools the sand, leading to a drop in temperature inside the small pot. They propose using the Maxwell-Boltzmann distribution to calculate the speed of water molecules and their likelihood of evaporating. The user seeks assistance in deriving a formula for the temperature T(t) over time t, given the parameters of the system. They emphasize the need for help with the calculations and express gratitude for any assistance provided.
KeKe29
Messages
5
Reaction score
0
hello, i am crowed and i need help,
first of all i am thankful for every help,
terms are : i have 2 clay pot 1 small and 1 big one, on picture black sticks are pot, the small one is inside the big one and empty space is filled with sand, i am making this sand wet and after some minutes next temperature inside small pot is going down, i have to explain this effect why this happens and make some calculations.
i have formed explanation that : water molecules have different speed and some of them has enough energy to evaporate and leave sand, after this sand is getting cold because high energy molecules are leaving sand. this is general explanation but how i told i am crowed in calculation, i want to calculate T(t)=? T-temperature inside small pot and t - time after making sand wet,
i have way but i have no enough knowledge to calculate it, first of all we have to calculate chance of speed distribution (maxwell-boltzman distribution) integral from this function will be chance of speed distribution, but we have to calculate speed for Z vector, after this we have to multiplication chance on number of water molecules which are able to leave sand and they have on this distance l=VevaporationXt V-speed for evaporation and t - time, after this i can't resume if u can help me to calculate T(t) we have any information about sand, water, pots and everything what you need, maybe i am wrong and please help me to calculate this, anyway i am thankful for every help.

and sorry for my bad english. thanks
 
Physics news on Phys.org
basic picture

i miss one thing that small pot has no thermocontact with air
 

Attachments

  • eke.png
    eke.png
    2.8 KB · Views: 535
This has been discussed many times on PF, and will likely come up again, so the video might come handy. Previous threads: https://www.physicsforums.com/threads/is-a-treadmill-incline-just-a-marketing-gimmick.937725/ https://www.physicsforums.com/threads/work-done-running-on-an-inclined-treadmill.927825/ https://www.physicsforums.com/threads/how-do-we-calculate-the-energy-we-used-to-do-something.1052162/
Thread 'Is 'Velocity of Transport' a Recognized Term in English Mechanics Literature?'
Here are two fragments from Banach's monograph in Mechanics I have never seen the term <<velocity of transport>> in English texts. Actually I have never seen this term being named somehow in English. This term has a name in Russian books. I looked through the original Banach's text in Polish and there is a Polish name for this term. It is a little bit surprising that the Polish name differs from the Russian one and also differs from this English translation. My question is: Is there...
Hi there, im studying nanoscience at the university in Basel. Today I looked at the topic of intertial and non-inertial reference frames and the existence of fictitious forces. I understand that you call forces real in physics if they appear in interplay. Meaning that a force is real when there is the "actio" partner to the "reactio" partner. If this condition is not satisfied the force is not real. I also understand that if you specifically look at non-inertial reference frames you can...
Back
Top