this vid and the one about PV diagrams and internal energy (about 4h long) summed up my entire thermodynamics in physics degree im so glad this vid exists
@@ahmadsleiman37 Probably thinking of thermochemistry. If not, chemistry and physics do tend to have many overlaps in some areas so im not too surprised.
thank you so much! with your videos I'm learning more than I have ever learned at school! i started to understand physics normally, all with the help of your explanation.
Absolute king, all your videos are so helpful! The lecture notes on thermodynamics were hard to understand but you just simplified the whole process thanks! Keep doing what you're doing
Many Thanks for your time and this helpful video. My roommates said Thermodynamics is hard. however, in 1h :18 min and 25 second. I understand the HARD THERMODYNAMICS. May my almighty God bless you and give more energy to pu on the Helpful videos like this one . Again, thank you so every much for time and Bless you hear.
I watched so many videos and looked up explanations on google to try to understand these topics but less than a couple minutes after watching your videos, everything just makes sense. You really break things down so simply. Thank you!! D:
After this course unit and the results are out I will send this video to my lecturer to see how things are supposed to be done and explained not just to brag around. Thank you Sir
Hello... sir... Really really really.. Your videos are awesome.. I loved it, the way of your explanations.. Like a practical one.. Its amazing.. I dont want to memorize any formule after watching your videos. the thermodynamics and HMT is the most dangerous subjects in Mechanical Engineering.. But you made that things very easy for me..
First of all, WOW!! So helpful! I'm a little confused about the ideal gas problem - So in my ChemE thermo class we talk about the entropy change of an ideal gas as delta S = integral of Cp*dT/T - ln(P/P0)*R. Now this would equal zero for a reversible process, but nowhere in the problem does this say that it is reversible and the only ispentropic processes are reversible and adiabatic. I'm not sure what to think because your reasoning makes sense here but I'm sure if you have an irreversible adiabatic process there's an entropy change, as all irreversible processes have entropy changes. This is quite a thinker...
How to solve this?👇 indoor heater operating on the Carnot cycle is warming the house up at a rate of 30 kJ/s to maintain the indoor temperature at 72 ºF. What is the power operating the heater if the outdoor temperature is 30 ºF?
There are different sign conventions. The heat engine sign convention assigns work as positive when the system provides the work, and heat as positive when it is added to the system.
one question 1:10:00 , isn't the net change in entropy of a heat engine affected by the work done by the engine? Is there a differnce between a carnot engine and a regular heat engine?
For temperature differences and weighted averaging, you don't need to convert to Kelvin. You ultimately need Kelvin before you plug it in to the rest of the equation, but it isn't necessary to convert in advance of averaging. (T1 + T2)/2 + K will give the same outcome as: (T1 + K + T2 + K)/2 Where the two T's give temperature in Celsius, and the K is the Celsius to Kelvin conversion adder of 273.15 Kelvin.
what is meant by a jet engine cycle? Is that a measurement over time? by the same token, does a typical reciprocating or piston engine cycle refer to a single intake combustion exhaust cycle? please advise if you know
I want to know whether this is university level. I am first year mechanical engineering student. The questions that I see in the exam are more complicated than these.
