Heat Transfer (13): Transient heat conduction, lumped heat capacity model and examples

[@samokablamo]

This professor is fantastic. I've never gone to this school or had him, I'm just watching his videos to review some fundamentals, and wowwie. Great work, Professor, and thank you.

[@CPPMechEngTutorials]

You're welcome!

[@atharvaayanar]

I have my midterms tomorrow and these lectures are coming in clutch. Thank you

[@CPPMechEngTutorials]

Good luck!

[@brendankilleen781]

This professor is the only reason I understand even the most basic of concepts, I'd have an even worse grade if it wasn't for him.

[@CPPMechEngTutorials]

Hooray!

[@riazrafiq8913]

We are really grateful for these educational supplements. We can't express our gratitude in words. Thank you very much.

[@CPPMechEngTutorials]

We're glad you found them useful.

[@NOKOTSHEHLA]

Really appreciate the videos. They are comprehensive and concise. From NWU

[@CPPMechEngTutorials]

Glad you are enjoying them.

[@HuyNguyen-fn7mx]

Thank you so much for this, really clear and straight forward

[@CPPMechEngTutorials]

Thanks!

[@kusoe2020]

Look at 10:30 to understand graph. Also see 26:00 to understand something better. (VVI)

[@sourabhhanje6724]

This guy is amazing. If you are from some famous college in Mumbai , say Hii

[@quaziadnan]

hi

[@Oxone_2KHSO5]

Interesting, can we express (hAs)/(mCp) as 1/(Rtotal*mCp) Where R can be as Rconv+Rcond and how has to be looks Biot number in this case?

[@ALIKN1-1]

Legend ….thanks for UOA

[@AkshatJainmeb]

why does the graph for exp have an inflexion why does it not look exp(-x) type

[@josephdurso5175]

In the energy balance why is energy generation subtracted? Shouldn’t it be added? Anyone care to weigh in and lmk?

[@abdulhadimalik9753]

i like that person much he is fantastic

[@korayerman4275]

American style is the best. Even the technology allows to use power point slides, they teach by handwriting.

[@laasd1613]

At 23:16, how does he know that h is equal to 25?

[@ThePineapple3112]

it's in the problem statement, he just didn't specify it earlier

[@lamexicanahi]

h its a given number...

[@yadhukrishnakyadhukrishnak8550]

It was a nice lecture

[@AquibManar]

Good content

[@aakarshankhanal8227]

Can anyone provide me w the mid term questions?

[@ryanhalloran6055]

Is the h, in this example given? I don't see it in Appendix A.1.

[@nicklarosa3816]

my question as well..

[@nirajneupane4549]

yeah h should be given. value of h is not given in appendix. if value of h is not given you need to find h yourself. for that you will need nusselt number.

[@yossefatia3536]

In Copper sphere example how was h obtained? How do you find h in general I assume you need tables with a few properties. Thanks

[@CPPMechEngTutorials]

Convection coefficients are discussed in later lectures.

[@evaristogabriel8208]

shouldn't Bi be much greater than 1 to use the lamped capacitance method

[@triambakeshwar8766]

Nope, you use Hiesler's charts then. For less than 0.1, LCM. For greater than 100, error function method.

[@rockyroad179]

13:40

[@hemant05]

Thanks!

[@nicknimmer9574]

I hope in the future yall would get some people who can work a camera correctly and give the person watching the video time to write down what is being said or was just written. Having to stop every few seconds gets annoying and makes me lose my train of thought and ability to focus on whats being taught. We do not need to see the professor walk from one side of the room to the other explaining things while drinking coffee. Please in the future find better people to operate the cameras.

[@CPPMechEngTutorials]

We gave the camera operator this feedback. Later videos don't have this issue.

[@cotynorcross1822]

what a cry baby lol go back to chegg

[@husseinaldebes3268]

how could L sub c (volume to surface area) of a cylinder == radius/2 !!! its unverified

[@azurqasm2746]

I believe it's for slender (very long compared to their diametres) cylinders, where r is not that long compared to l? That simplifies the characteristic length to roughly r/2.

[@FirdausMollah-j8v]

LC= V/A = πr²l/2πrl =r/2

[@mechanicalkiller1061]

perfect, but i wish if you solve harder problems LUAI 6 NOV.2022 ME 315 | M II B#63

[@fathoniam8997]

the cameramen really made me angry...

[@kero8090]

this camera man needs to chill out