Sir.. perfect explanation and thanks a lot.. i was confused abt heat loss in furnace with lumped system but this cleared it... looing forward for more videos
Yes. So when the temperature distribution for a fin was derived, they set it at T(x)-T(infinity)/(To -Tinfinity). In this video, the same applies but instead of T(x) we have T(t). Why do we express it as a ratio of temperature difference?
Sure, I case of fin we study steady state heat transfer means no effect of time on heat transfer. Lumped system is transient state i.e. heat transfer rate depends on time.T(t) is temperature at particular time...
Though i fully understand your video but i do wanna recommend you to upload videos in HINDI with ENGLISH subtitles.. by doing that you would reduce your conversational explanation error. i hope i'm not disappointing you rather than letting you to know the fact and giving you a very transparent review.!
+Nabil Khatri thanks for your comments, I speak in colloquial english. It could not be grammatically correct but easily understandable. My most of views comes from America and english countries...
It is object specific, for example , the diameter of sphere is taken as characteristic length, for vertical cylinder the height, for horizontal cylinder the diameter...
How is it possible that without temperature gradient, heat transfer takes place? In steady state, change in temperature w.r.t to time is zero. That doesn't mean that change in temperature is not taking place, but it is taking place in steady state condition which is also the case for lumped system. Then what is the difference between lumped system and steady state system? As in both system change in temperature w.r.t to time is zero. Please resolve my query.
@@Dr.AmitMandal You have mentioned the temperature to be same in the video, instead rate of change of temperature (with time) is same? (All the points in the body will have their temperatures decrease or increase uniformly with time although they can be different?