Ex. 11.1 With annulus radius limited to 10 mm, the height h of the fins must also be limited, mainly by hydrodynamic/geometric reasons- I c'ant see how we can improve external surface area on the tube by a factor of 100 ! May be you should ask this question : What will be the fin geometry (h: height, b: thickness, n: density ) to reduce Tube length by a factor 2. Thanks for your nice and inspired serie of lectures.
Your videos are very helpful to understand heat exchanger shell & tube, I am working on engineering company as a vessel engineer and start reviewing and studying heat transfer lecture again because I may be in charge of some hx designs later. Would you mind telling me which hear transfer book is used by u in these video?. Thank a lot again for your wonderful videos.
Ex. 11.1 when we are using fins, why we are not considering ln(Do/Di)/(2pi*k*L) term in the calculation of overall h.t.c. though Do is not equal to Di? Is it a consideration of taking k is so high as we consider tube is made by Cu only?
