Great job and thank you - I don't understand why my professor can't understand that we need this type of breakdown BEFORE we get into the really complex equations and theories. Now it all makes so much more sense.!
Ahh I was looking for more videos on how this like the calculations too. I finally understood through your video. I know 7 years is a long time, but I would definitely watch to learn.
Julia I'm out of your world yet thats good to see such a beautiful soul trying to give out to world what has been learnt. I'm good with philosophie and with your help, better at thermodynamics, thanks a lot :)
Think u can try to add some explanation on the equipment involved in the carnot cycle (compressor, turbine etc.) and try to explain heat pump and refrigerator, and also try explain some concepts like why the curve for adiabatic is steeper than the isothermal line, why adiabatic processes are also isentropic etc, I did spend some time to read it up on the internet just now :) Anyway very good job and clear explanation, pronunciation is nice and clear n u seem very passionate about the subject!
At 5:54 I think your air standard cycle represents the T-S cycle in wrong way because the T3 is the maximum temperature where as T4 is temperature less than T3 but greater than T2. By the way I like the line "Believe me I am Engineer😂😂" I know every engineer's hardships. And love your content ❤❤. And can we join in insta.
0:53 Only reversible! adiabatic processes are isentropic (ΔS=0). In typical adiabatic processes, there is no heat transfer across the system's boundaries (ΔQ=0)
Женщина просто лучшая, если б не она, я бы этого гребаного Романюка и ТТД учила бы полтора года. Так же хочу сказать спасибо тиндеру за то, что я выучила английский
The short answer is that entropy is a measure of the disorder in a system. A process happening with constant entropy, means a reversible process with no heat transfer. Idealized processes that expand and compress fluids, are examples of constant entropy processes. That is an oversimplified explanation, but the idea is that time's arrow always points to either an increase in entropy, or constant entropy. You cannot destroy entropy; you can generate it, keep it the same, discard it to your surroundings, or bring it in from your surroundings, but you cannot destroy it without time running backwards. Entropy enters a system with heat transfer, and the amount of entropy is proportional to the heat transferred and inversely proportional to the Kelvin temperature at which it transfers. The formula is delta S = delta Q/T, for a constant temperature heat addition process. So an adiabatic and reversible process will have no change in entropy. A reversible process, is an idealized version of a process that doesn't destroy any entropy. The process is possible in both directions. Examples of such processes that could be reversible in the upper limit of perfection are: Motors and generators Turbines and compressors Compression and expansion of a gas in a cylinder with no heat transfer at the same time Heat transfer across an infinitesimal temperature difference Electric current through superconductors The following processes are inherently irreversible: Throttling valves Sudden expansion of a gas Heat transfer across a finite temperature difference Mixing Any process involving frictional heating or ohmic heating
Quality is mass of vapor, over total mass of liquid plus vapor. We define it this way, because we want high quality steam (i.e. mostly vapor) to exit a turbine.
Omg 7 years later. This helped me so much ty 😊
Great job and thank you - I don't understand why my professor can't understand that we need this type of breakdown BEFORE we get into the really complex equations and theories. Now it all makes so much more sense.!
pro tip: watch movies at Flixzone. Been using it for watching loads of movies recently.
@Ahmir Jaxen Definitely, have been using Flixzone for months myself :)
@Ahmir Jaxen Yup, been using Flixzone for months myself :D
Your professor knows what he’s doing. He wants to weed out the people who can’t conceptualize this stuff on their own.
its so clear to me now whilst i'm studying for my thermo exam. Thanks a ton!
Julia you've helped me couz this wasn't making sense to me but now I will become good at it thanks ❤
Watching this 5 years later in the UK has actually saved me thank you
Love that this random video is still helping people! Good luck on your exams!
Ahh I was looking for more videos on how this like the calculations too. I finally understood through your video. I know 7 years is a long time, but I would definitely watch to learn.
It makes so much fricking sense now!!! Holy Cow! Somebody please give that girl a sponsor! Geez!
Thank you!!!!! Don't know where I'd be without this video!
Im also studing mechanical engineering and this helped me so much!!
thanks from Spain! :D
I can confirm, one year after you and the symptoms remain.
2024 and still going strong @@yodartt
I have my HVAC test tomorrow and this was a life saver. Thanks a lot🤗🤗
this is going to help me on my Thermo test, thank you
THANK YOU Lin saved me a lot of time summarising these myself
that "cool" at 4:45 killed me haha
thanks for the vid! will definitely help me not die in my thermo exam
:D
Julia I'm out of your world yet thats good to see such a beautiful soul trying to give out to world what has been learnt.
I'm good with philosophie and with your help, better at thermodynamics, thanks a lot :)
Not too shabby. The video wasn't fancy like a full time youtuber but the points that were important were gotten across!
Thank you Julia ! You did a great job ! This is really difficult for me to understand, but your presentation helps a lot ! All the best to you ;-)
Adiabatic means that no heat transfer occurs. Entropy is constant ONLY in a reversible, adiabatic process but not in an irreversible one.
I liked your T shirt..
Love from india🇮🇳🇮🇳❤️
I m mechanical engineer
You're the GOATm exactly what I was looking for !!
Thank you so much! This helped a lot I just couldn't focus well because you're so beautiful and I'm just staring at your face most of the time.
Wish I knew this when I took Thermo. Great video!
23/6/2022. I have state exam in 4 days and this is so helpful. Thank you Julia Lin for clear explanation :)
I explains lot clearly and give me a exact image . Thanks a lot for the effort taken for making this vedio
youre a bit of a legend for this
Gret exxplaniton. I lyke it! Smartness!
Great job
Very nice indeed! Congrats!
wow! A semester covered simply, very well... Thank you!!!! :)
Thanks Julia, this gonna save me on my midterm 😩😩
Thanks a lot, the video was very helpful.
Muchs needed informations 4 my brains! Thx!
Love you mam 😍❤️
This was a generally good video, and i would especially use this video for revision on key concepts!
Think u can try to add some explanation on the equipment involved in the carnot cycle (compressor, turbine etc.) and try to explain heat pump and refrigerator, and also try explain some concepts like why the curve for adiabatic is steeper than the isothermal line, why adiabatic processes are also isentropic etc, I did spend some time to read it up on the internet just now :)
Anyway very good job and clear explanation, pronunciation is nice and clear n u seem very passionate about the subject!
Bravo Bravo Bravo !
Huge help. Thank you so much for making the video!
Thank you so much. Please keep making more of these.
OMG Julia! You hit the spot!!!
Great explanations!
At 5:54 I think your air standard cycle represents the T-S cycle in wrong way because the T3 is the maximum temperature where as T4 is temperature less than T3 but greater than T2.
By the way I like the line "Believe me I am Engineer😂😂"
I know every engineer's hardships. And love your content ❤❤. And can we join in insta.
Very informative
Thank you for making it extra simple!
This helps a lot, thank you sm 🙏🏽
Thank you!
Julia, you're awesome :)
Awesome! Thanks!!
slay Queen!!!
I am majoring in biological engineering but this is still really helpful. So thanks!
thank youuuuuu
Thank you so much for the explanation!!! It was really helpful in making my understanding clear!!!!
It really helped me. thnx...from India
0:53 Only reversible! adiabatic processes are isentropic (ΔS=0). In typical adiabatic processes, there is no heat transfer across the system's boundaries (ΔQ=0)
Thanks!!! It was really useful
thanks!
So helpful!! Thank you!
Great video
谢谢小林同学
You are good!
I like the explanation of video..trust me I'm not engineer...😂😂😂
Isotherms on T-S diagram are
Parallelogram to S or T?
sweet vid !
thank you
Watching this 20 mins before my exam 😂
I trust her, she is an engineer...
Thank you so much. You are such a wonderful teacher❤️
Lots of love from INDIA
Oh my god thank you u like a angel 😘😄
In middle of pv diagram there will be mixture of liquid and vapour not (liquid and gas). But I like your explanation 👍
hello Julia... it really helped... may u help me with some more topics...
Женщина просто лучшая, если б не она, я бы этого гребаного Романюка и ТТД учила бы полтора года. Так же хочу сказать спасибо тиндеру за то, что я выучила английский
AWESOME!!! Btw did you win? lol
It would be more helpfull if you included the P-h diagrams too. Btw, it was helpful.
thx so much loved the video!! #youmademepassthiscourse
yes indeed
Haha her t-shirt 😂
Got 20 minutes before my exam wish me luck
trust me im an engineer
hi where do you belong to
can u plz use whiteboard so that the diagram would be clear to see!
Thank you. I’m having a hard time with entropy. Can anyone tell me what constant entropy means?
Thanks
The short answer is that entropy is a measure of the disorder in a system. A process happening with constant entropy, means a reversible process with no heat transfer. Idealized processes that expand and compress fluids, are examples of constant entropy processes.
That is an oversimplified explanation, but the idea is that time's arrow always points to either an increase in entropy, or constant entropy. You cannot destroy entropy; you can generate it, keep it the same, discard it to your surroundings, or bring it in from your surroundings, but you cannot destroy it without time running backwards. Entropy enters a system with heat transfer, and the amount of entropy is proportional to the heat transferred and inversely proportional to the Kelvin temperature at which it transfers. The formula is delta S = delta Q/T, for a constant temperature heat addition process. So an adiabatic and reversible process will have no change in entropy.
A reversible process, is an idealized version of a process that doesn't destroy any entropy. The process is possible in both directions. Examples of such processes that could be reversible in the upper limit of perfection are:
Motors and generators
Turbines and compressors
Compression and expansion of a gas in a cylinder with no heat transfer at the same time
Heat transfer across an infinitesimal temperature difference
Electric current through superconductors
The following processes are inherently irreversible:
Throttling valves
Sudden expansion of a gas
Heat transfer across a finite temperature difference
Mixing
Any process involving frictional heating or ohmic heating
@@carultch thank you. That’s a lot to think about. I appreciate it!
Nooo i just saw this video after my exams 😭
Isn't it mass of vapor over mass of liquid minus the mass of vapor?
Quality is mass of vapor, over total mass of liquid plus vapor. We define it this way, because we want high quality steam (i.e. mostly vapor) to exit a turbine.
btr den my swedish lecturer LOL
Adiabatic is not certainly isoentropic!
Idealized adiabatic processes are isentropic. Some adiabatic processes are not, such as a throttling valve.
👇if you’re a chemical engineer student
thanks!
Great video
Thank you!
Thank you!