This video discusses the key features of temperature-entropy diagrams and how to use them to represent different types of thermodynamic processes. Link to the diagram: commons.wikime...
Пікірлер: 33
@chivo24684 жыл бұрын
Awesome video. Had been trying to understand the diagram in books and "easy examples" until I came across this. Thank you and I hope you're still creating material to this day. Subscribed.
@youthermo29514 жыл бұрын
Thank you very much for you kind comment. The latest videos of the channel have been in Portuguese but we plan to post videos in English again soon.
@beyondscience0045 жыл бұрын
That's just it;straight to the point...awesome
@youthermo29515 жыл бұрын
Thank you very much. We are glad that the video was useful to you.
@brandonmartin32974 ай бұрын
good shit mate
@gizemkacann2 ай бұрын
many thankss for wonderfull explanationn!!!
@lookwhathappenyougotmeaski69612 жыл бұрын
amazing video! thank you very much
@thulanithosalya Жыл бұрын
Thank you so much♥🙏
@AlphatecEngineering3 жыл бұрын
Great video folks! thanks for sharing it!
@MrMatmulan Жыл бұрын
Percebi que era brasileiro pelo sotaque hahahaha, ótimo vídeo
@paulpolito14382 жыл бұрын
thank you
@hamzamohamed79355 жыл бұрын
Thank you for simple yet informative video
@youthermo29515 жыл бұрын
Thanks for your comment.
@camilamaeses67333 жыл бұрын
Can you give examples on you would determine values based on the diagram?
@youthermo29513 жыл бұрын
This is a diagram for a pure substance. If it there is only one phase, you specify two properties (e.g., T and S, or P and S, or T and P, etc...). Once you locate the point in the diagram that matches your specifications, the other thermodynamic properties can be found from the diagram. If there are two phases, that is, a condition below the "dome", the specification of a single variable - for example, T - allows you to determine the phase equilibrium pressure, and the specify entropy of the liquid and vapor phases in equilibrium. If you want to determine the relative amounts of the two phases, you need an additional specification, which can be, for example, the specific entropy of the system or the quality (vaporized fraction).
@qwezxc234564 жыл бұрын
Thank you sir
@youthermo29514 жыл бұрын
You are welcome, thanks for your comment.
@nigeljohn66763 жыл бұрын
How are points 2 and 3 ISO-Baric,.. they are completely different temperatures!
@youthermo29513 жыл бұрын
Points 2 and 3 are at the same horizontal line, thus, they are at the same temperature. In addition, they are at the same pressure because if the temperature of a pure substance remains constant in the two-phase, it is because the pressure remains constant too, according to the Gibbs phase rule.
@taseenhaider39613 жыл бұрын
How the pressure variation is represented in the dome if it's inclined line from 2 to 3 at 4:38
@youthermo29513 жыл бұрын
Thank you for your question. Points within the dome have two phases in equilibrium. According to Gibbs' phase rule, we have that F=C-P+2, where C is the number of components, P is the number of phases, and F is the number of degrees of freedom, that is, the number of intensive variables you need to specify to set the state of the system. For a pure component (C=1) in vapor-liquid equilibrium (P=2), we have that F=1-2+2=1. Having F=1 means that you can only specify the value of one intensive variable; the values of all other intensive variables of the phases will be the same regardless of the phase amounts. The line between, points 2 and 3 is horizontal, that is, all points of this line are at the same temperature. As F=1, these points will also be at the same pressure. Kind regards from the YouThermo Channel.
@N330AA2 жыл бұрын
This is great, but the accent was a little difficult to understand on some of the technical terms.
@pukhrajmansion84454 жыл бұрын
Good presentation Good explanation PL translation in Hindi language
@youthermo29513 жыл бұрын
Thanks for the comment. About translating to Hindi, as we have no knowledge of the language, we cannot review Google's automatic translation, which is good but far from perfect. Sorry.
@user-le2yx1wb2z5 жыл бұрын
what is the isobar in the sub cooled liquid region also?
@youthermo29515 жыл бұрын
They would follow the trend of the lines outlined to the left of the saturated liquid line. Note that for condensed phases - liquids (far from the critical point) or solids - the entropy is quite insensitive to pressure. This means that "moving to the left" along a line of constant temperature - that is, decreasing the entropy - needs large pressure increases.
@cookiesncream84903 жыл бұрын
thanks sir
@youthermo29513 жыл бұрын
You are most welcome, Cookies n Cream!
@user-le2yx1wb2z5 жыл бұрын
where is the sub cooled liquid region?
@youthermo29515 жыл бұрын
It is to the left of the saturated liquid line. Nonetheless, observe that water with low temperature and low entropy value may be in a solid state, but this diagram does not represent the solid-liquid equilibrium line. Thus, by just using this diagram, one cannot tell the condition in which such a liquid-solid transition would take place.
@philmybutup47593 жыл бұрын
U brazilian?
@youthermo29513 жыл бұрын
Yes, we are Brazilian.
@philmybutup47593 жыл бұрын
@@youthermo2951 nice me too I could tell from the accent haha