man, i don't know if you are reading this, but this video is so good and well explained that it saved my ass in university. now everything makes sense. thank you so much.
Professor, I just want to say thank you for upload these video, I watched all of your series during my undergrad and now I'm rewatching your heat transfer series as review for my graduate program. You are a savior.
For those who are confused about the unit of the final answer, The question stated that theres a random wall and didn't give any dimensions for it. It was just asking for the heat loss through ANY unit area through that wall. At the beginning of the solution, he took 1 m2 of the wall and did his calculations respective to that. Indeed, the final answer is total rate of heat transfer. However, he was considering 1 m2 of the house's wall and so the /m2 is refers to a unit area of the HOUSE'S wall, it doesn't come from the calculations, it's just there because he took 1 m2 of the wall as the specimen. If the question were "What is the heat rate through 1 m2 of the wall", everything would be the same except he wouldn't have put a /m2
If the ques mention to calculate heat flux , shouldn't we exclude out the area inside calculation ? q" = (Ti-To) / (1/hi + L1/k1 +L2/k2 + L3/k3 + L4/k4 + 1/ho)
The unit of final answer is confusing. Shouldn't be the unit in watt? according to the equation he is using delT=Power * Rth. Please correct me if I am wrong
I am confused and I have a question like you, heat flux q''=((delta T)/R _tot)/A, its unit is w/m^2 , and qx seems to be heat transfer rate in unit watt.
Given the question asks for heat loss per unit area, the most compact response would be to give the answer in W/m2. You could provide an answer as "xx Watts", but you should then add the words "per square meter" to make it explicit.
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man, i don't know if you are reading this, but this video is so good and well explained that it saved my ass in university. now everything makes sense. thank you so much.
Professor, I just want to say thank you for upload these video, I watched all of your series during my undergrad and now I'm rewatching your heat transfer series as review for my graduate program. You are a savior.
For those who are confused about the unit of the final answer,
The question stated that theres a random wall and didn't give any dimensions for it. It was just asking for the heat loss through ANY unit area through that wall. At the beginning of the solution, he took 1 m2 of the wall and did his calculations respective to that. Indeed, the final answer is total rate of heat transfer. However, he was considering 1 m2 of the house's wall and so the /m2 is refers to a unit area of the HOUSE'S wall, it doesn't come from the calculations, it's just there because he took 1 m2 of the wall as the specimen.
If the question were "What is the heat rate through 1 m2 of the wall", everything would be the same except he wouldn't have put a /m2
An instructive video solving a practical problem on heat transfer using thermal resistances. Thank you !
Thanks for explaining the analogy so well!
SIR I DON'T HAVE WORDS TO THANK YOU.
watching this video 2 hours before my test , thanksss
thank you for this. helped alot for my thermodynamics exam
This is really appreciated, thanks a lot 🙏
Thank you
All the way from Saudi Arabia
If the ques mention to calculate heat flux , shouldn't we exclude out the area inside calculation ? q" = (Ti-To) / (1/hi + L1/k1 +L2/k2 + L3/k3 + L4/k4 + 1/ho)
Thank you very much eyyy understood everything
Very good many thanks
Thank you! Very well explained.
The unit of final answer is confusing. Shouldn't be the unit in watt? according to the equation he is using delT=Power * Rth. Please correct me if I am wrong
I am confused and I have a question like you, heat flux q''=((delta T)/R _tot)/A, its unit is w/m^2 , and qx seems to be heat transfer rate in unit watt.
thank you
Thank you
Thank you
Thank you!
qx is the heat transfer rate... qx'' is heat flux...
shouldn't the units for heat transfer in the final answer be Watts and not Watts/m^2
yes..units should be in watts
Given the question asks for heat loss per unit area, the most compact response would be to give the answer in W/m2. You could provide an answer as "xx Watts", but you should then add the words "per square meter" to make it explicit.