Curious - question about a pressure vessel and tempreature

AI Thread Summary
When pressure decreases, temperature also decreases, which is relevant for cooling beverages like soda. To cool a can from room temperature (70 degrees) to around 40 degrees by releasing pressure, significant internal pressure is required. A density vs. temperature chart indicates that a 10-12°C temperature change corresponds to a pressure change of about 25 bar (360 psi). This suggests that achieving the desired cooling effect would necessitate a substantial amount of pressure. The discussion emphasizes curiosity about the physics involved rather than practical application or safety concerns.
CybrSlydr
Messages
2
Reaction score
0
I have no intention of designing, building or experimenting with this, so no worries about safety. I'm just curious and did a Google search for Physics Forums and this was the first to come up.

I was wondering, when pressure decreases so does temperature, right? So, were we to have a pop (soda for you heathens :D ) can, how much pressure would it have to have on the inside so that when the pressure was released, it would cool it down to around 40 degrees? Insta-cool beverages! Assume it's already at room temperature (70 degrees) and normal outside pressure (1atm).

I'm not really concerned with feasibility or practicality - just curious about the factuality of what would be required.

I did do a search already but the only thread that asked this kind of question was closed.
 
Physics news on Phys.org
Oh wow, that means a LOT of pressure will be needed.
 

Thread 'Is calling fictitious forces "not real" just about terminology?'

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...
View full post »

Thread 'Inclined treadmills and Galilean Invariance'

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/
View full post »

Thread 'Derivation of Hamilton's Principle: Questions'

I have recently been really interested in the derivation of Hamiltons Principle. On my research I found that with the term ##m \cdot \frac{d}{dt} (\frac{dr}{dt} \cdot \delta r) = 0## (1) one may derivate ##\delta \int (T - V) dt = 0## (2). The derivation itself I understood quiet good, but what I don't understand is where the equation (1) came from, because in my research it was just given and not derived from anywhere. Does anybody know where (1) comes from or why from it the...
View full post »

Similar threads

Pressure differences in a leaking vacuum vessel
Replies
17
Views
10K
Physics of Blood Pressure and Blood Energy
Replies
10
Views
3K
Effect of ambient pressure on Newton cooling (water)
Replies
2
Views
1K
Physics behind blood vessel constriction and blood pressure?
Replies
6
Views
43K
I Effects on Engine Overheating and Pressure Dynamics
Replies
4
Views
2K
Calculating Deflagratio Pressure in a Closed Vessel
Replies
1
Views
3K
Flow of air through an open tube with a balloon
Replies
9
Views
4K
Question about transient temperature and pressure for air flowing into a box
Replies
1
Views
563
Pressure Vessel Design Question
Replies
3
Views
2K
Pressure vessel Design - Splay out concern
Replies
3
Views
2K

Hot Threads

Recent Insights

Back
Top