example 3-4 A rigid tank contains 10 kg of water at 908C. If 8 kg of the water is in the liquid form and the rest is in the vapor form, determine (a) the pressure in the tank and (b) the volume of the tank.
First, thanks for the videos! They're really helpful. Second, before I watched your solution, I calculated the volume of both liquid and water separately then added them to get 4.7269 m3 so the same answer as the one you got. My question is whether it is a must that we learn the quality formula or is it optional?
Why we multiplied avg volume with the total mass & got the correct ans? don't you think that we should have actual volume * total mass, this confuses me a bit, I know its mathematically right but idk why it confuses me up, I did this with the unitary method & got the correct answer. Please help. PS: Your lectures are of great value THANKS ALOT MANNN
Well, yes, you could take the specific volume of the vapor times the mass of vapor. That would give you the volume that the vapor is taking up. And do the same thing for the liquid. Then add both of them up. But the beauty of the quality, x, is that it already takes the ratio of the masses so you can have one value (the "average" specific volume") that you can use to group the liquid and vapor together into one substance with that property. Once you have the quality, then you can calculate specific volume, enthalpy, etc, without having to separate them into two substances.
@@engineeringdeciphered Oooh. Thanks for the explaination. I was wondering the same thing as to why my lecturer didnt just add up the total volume for the vapor and liquid. But i just decided not to question it and follow her method 👍👍
Thanks for the vid, man. Helped me out a lot!!
example 3-4 A rigid tank contains 10 kg of water at 908C. If 8 kg of the water is in the
liquid form and the rest is in the vapor form, determine (a) the pressure in
the tank and (b) the volume of the tank.
amazing, thank you for this video
Thanks for the video 👍
The video sound is pretty good, beyond my imagination
Younus a cengel♥️
First, thanks for the videos! They're really helpful.
Second, before I watched your solution, I calculated the volume of both liquid and water separately then added them to get 4.7269 m3 so the same answer as the one you got. My question is whether it is a must that we learn the quality formula or is it optional?
Sir do u have a file for the steam table?
Why we multiplied avg volume with the total mass & got the correct ans? don't you think that we should have actual volume * total mass, this confuses me a bit, I know its mathematically right but idk why it confuses me up, I did this with the unitary method & got the correct answer. Please help. PS: Your lectures are of great value THANKS ALOT MANNN
Well, yes, you could take the specific volume of the vapor times the mass of vapor. That would give you the volume that the vapor is taking up. And do the same thing for the liquid. Then add both of them up. But the beauty of the quality, x, is that it already takes the ratio of the masses so you can have one value (the "average" specific volume") that you can use to group the liquid and vapor together into one substance with that property. Once you have the quality, then you can calculate specific volume, enthalpy, etc, without having to separate them into two substances.
@@engineeringdeciphered Oooh. Thanks for the explaination. I was wondering the same thing as to why my lecturer didnt just add up the total volume for the vapor and liquid. But i just decided not to question it and follow her method 👍👍
Tq bro i get it😅😅