Lec-17 Properties of Pure Substances-II

Lecture Series on Basic Thermodynamics by Prof.S.K. Som, Department of Mechanical Engineering, IIT Kharagpur. For more details on NPTEL visit nptel.iitm.ac.in

[@naturestudio808]

He is the benchmark for all professors. Most NPTEL course handlers must learn, the way of information sharing from him.

[@anonymoustraveller2254]

thank you very much professor s.k.som for this lecture series.i am very happy!

[@shivansh_nema]

One of the best teacher of all times...

[@nvmvel]

Unfortunately he is no more ☹️

[@ravindarsingh3002]

36:36 thank you sir for taking care of us😃

[@khanyusuf09]

these lectures will live forever

[@harindamodara1232]

8:23 x ,10:18 11:10 Boiling, *15:30** Evaporation , **17:40**-**18:55* Boiling, 27:00 Throttling, 36:45 Heating the wet steam, 40:10 Example1, 44:43 Example2 Q1-?: 58:11,58:27,58:46,59:03 A: 59:19,59:39

[@parmalchouriya738]

Great video sir, Made my concepts very clear....

[@roshankumarprasad7946]

As a loving guru, I have tremendous loving feelings for him. I would gladly look and listen to him all day in that fortunate room

[@zisankhan2821]

Thank you sir for so much clear fundamental lessons.

[@prad949]

the concepts are made very clear, which was a bit difficult by going through the book, really appreciated the lecture...

[@SumitKumar-he9wq]

why partial pressure of water vapour near the free surface of water and atmosphere is different?

[@arkitkabir5086]

@@SumitKumar-he9wq because vapour is dry saturated at given temperature. If partial pressure is less it would get diffuse out into atmosphere. If partial pressure is more it would be converted into wet steam

[@nishantkushwah1818]

Best explaination. Thank You Sir.

[@PriyanshuSingh-bt2bj]

Is dryness fraction property of a system comprising a single component ?If yes then, since number of properties required to define state of a system is 1 for a two phase and single component system according to the Gibb's equation, example we calculate specific enthalpy of any state at which liquid and vapor exist, why do we need dryness fraction ?

[@yashrai2129]

I think specific enthalpy is a derived intensive property, while pressure and temperature are intensive property, as he highlighted in his first lecture, therefore we will need the mass fractions, to actually define the specific extensive properties like volume energy and entropy, even though state is defined. But that's just what i was able to understand, not sure if it is correct

[@ApostolosFilms]

THIS HELPED ME AND MY SCIENCE CLASS... :) THANK YOU :D

[@adarsh7307]

best lecture

[@shubhamsaxena508]

does evaporation occurs in a pure system?

[@ahmadeldesokey9844]

Brilliant

[@TarunKumar-tx7ik]

sir s1 kaise find kiya in numerical 2

[@user-bx1de5ep3b]

thank you so much sir. :)

[@user-mv4hr7wg5j]

👌👌

[@speed61943]

My right ear likes this

[@anonymoustraveller2254]

Aravind Sanjeev this video in particular has a low sound.

[@parmalchouriya738]

You are right

[@ankursrivastava9074]

Last sound ,mn kr rha dwld kr lu

[@mmoore9954]

23:59

[@mmoore9954]

41:09

[@mmoore9954]

6:14

[@saisindhuja8829]

25:30 to 26:06 .....ok, i got the statement...but i want to ask - why so?

[@neerajthakur3066]

Sai Sindhuja bez it one is generated from bulk and the other from free surface and it does not take any liquid with it

[@shashankpal8022]

audioo prooobllem

[@purnaprashanth6761]

at wet steam h1 not equals to h2 then how sir did in problem that h1 equals to h2

[@kinshuk54]

the process is isenthalpic

[@Sanaya051]

Bcz of throttling caloriemeter, h1=h2

[@mmoore9954]

54:17