Heat Transfer (18): View factors, simple view factor examples

Timestamps will be added at a later date.
Note: This Heat Transfer lecture series (recorded in Spring 2020) will eventually replace the earlier Heat Transfer series (recorded in Fall 2015) in a couple years. The old lecture series had some errors and was lower quality.
Want to see more mechanical engineering instructional videos? Visit the Cal Poly Pomona Mechanical Engineering Department's video library, ME Online: www.cpp.edu/meonline​​​​
This lecture series was recorded live at Cal Poly Pomona during Spring 2020. The textbook is "Introduction to Heat Transfer" by Bergman et al.

[@AeroMelenezMartinez]

The best professor that makes learning consumable regardless of complexity! THANK YOU!!!

[@CPPMechEngTutorials]

You're welcome!

[@manyaagrawal1261]

LLLLLLLLLLLOOOOOOOVe YOUR VIDEOS! THANK YOU A MILLION TIMES!!!! I wish i had professors like you I would go to all my classes

[@CPPMechEngTutorials]

Thaaaaaaaaaaankkkkkkkks!

[@onekobo7937]

I swear.
Here in FUTO,I wish we had professors that were at least half as good as Mr Biddle.

[@manuboker1]

Thanks ! Wonderful Heat Transfer lectures !

[@calculusandmathematicslearning]

Our professor can't teach like you.
Look at his fitness in this age is amazing 😍.

[@bertuguyar1905]

bro that is because you watch it on 2x

[@calculusandmathematicslearning]

@@bertuguyar1905 u didn't understood what I'm saying is our university professor waste three hours on deriving formula and explanation and not solve multiple problems to understand the topic like this English professor

[@pimpingbuss]

LOOOOOOOVE LOVE LOVE YOUR VIDEOS! THANK YOU A MILLION TIMES!!!!

[@CPPMechEngTutorials]

You're welcome a million + 1.

[@pranavsivakumar5338]

Also for the second example of the pacman shaped object? why do we consider emissions from the inner surface rather than the outer surface as always?

[@muratcan4624]

26:56 love the melody there

[@akagantaemmanuel3372]

for the long duct, are the areas A1 and A2 supposed to be equal to D and piD/3respectively or D and piD respectively?

[@shreddingstranger]

39:20 A2 = 3/4*piD

[@akagantaemmanuel3372]

for the planes are the areas A1 and A2 200 and root 2 respectively or 200 and 100root2 respectively?

[@shreddingstranger]

36:08 sqrt(2)*100

[@pranavsivakumar5338]

Why's the fraction of energy leaving A1 hitting A1 = 0? Why can't the energy from the vertical face hit the horizontal face?

[@pranavsivakumar5338]

Can emissions only be perpendicular to the surface?

[@amjadm6772]

great video

[@CPPMechEngTutorials]

Thanks!

[@lexxcfd]

Can the view factor be negative?

[@chichorro1000]

no, between 0-1

[@Friedfishbone-nz2mv]

for half and half problem d anyone knows why is F11(0)+F12(0.5) not equal to 1 in that condition?

[@dpee5878]

I believe because it’s not fully enclosed

[@charlesdlamini8126]

🙏

[@onekobo7937]

Please what textbooks are being used.
I'm using HT by Holman.
HMT by Cengel-ghajar

[@CPPMechEngTutorials]

It's in the video notes.

[@user-zu6zb8ts5s]

I need a memory aid in A4

[@mohamedhamde2872]

I see it

[@melvindavis3629]

either you see it or you don't-view factor

[@CPPMechEngTutorials]

Yes.