I Atomization and Evaporation: Understanding the Energy Exchange

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    Evaporation
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Atomization of liquid through a small hole involves a significant energy exchange, where the pressure drop across the orifice converts potential energy into kinetic energy, resulting in a temperature increase. This process releases heat from the fluid, which can contribute to phase changes, such as vaporization. The power generated is calculated by multiplying the volume flow rate by the pressure drop, providing a measure of energy in watts. The heat required to boil the liquid primarily comes from the energy supplied to the pump that increases the liquid's pressure. Understanding these dynamics is crucial in applications involving fluid mechanics and thermodynamics.
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Split from https://www.physicsforums.com/threads/steves-random-physics-questions.1051467/
Oh, also, I know that it takes a lot of energy to phase change a liquid to a gas, but what if you force the liquid through a small hole that atomizes the liquid. Does the atomized liquid draw the same amount of heat from the surrounding area as its forced to become steam?
 
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When you have a volume of liquid flow through a hole, with a pressure drop across the hole, heat is released in the fluid. The volume in metres cubed per second, multiplied by the pressure drop in pascals, gives the power in watts, or joules per second.

The heat that passes to, and boils the liquid, comes from the power supply to the pump that raised the pressure.
 
Baluncore said:
The volume in metres cubed per second,
Just a clarification please: Is that the volume of the liquid before passing thru the hole? It seems to be the only way that statement makes sense.
 
Tom.G said:
Is that the volume of the liquid before passing thru the hole?
Yes, the volume of liquid.
That is a fundamental of hydraulics.
The pressure in the liquid is potential energy, which is converted to kinetic energy in the orifice, to become a hotter liquid and/or a vapour.
 
Thread 'Is there a white hole inside every black hole?'

Thread 'Is there a white hole inside every black hole?'

This is what I am thinking. How much feasible is it? There is a white hole inside every black hole The white hole spits mass/energy out continuously The mass/energy that is spit out of a white hole drops back into it eventually. This is because of extreme space time curvature around the white hole Ironically this extreme space time curvature of the space around a white hole is caused by the huge mass/energy packed in the white hole Because of continuously spitting mass/energy which keeps...
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