Heat transfer in a hollow fiber blood flows through a hollow fiber with an inside diameter of 100 mm and outside diameter of 120 mm. the blood is cooled by blowing air at a lower temperature across the outside surface of the fiber. the thermal conductivity of the fiber is 2 104 kw/m c. compute the overall heat transfer coefficient uo of the fiber based on the outside radius if: (a) all the thermal resistance is in the fiber wall. (b) the heat transfer coefficient between blood and the inside fiber wall is given by (8.35) and the heat transfer coefficient between air and the outside surface of the fiber is given by (8.47). use kblood 1⁄4 0.633 w/m k and kair 1⁄4 0.0262 w/m k, reynolds number for air 1⁄4 200,000 and prair 1⁄4 0.7. how much error is introduced by assuming that all of the thermal resistance is in the fiber wall?

The answer to your question is option a

I'm not going to write 150 words lol, but i will you with giving you examples of how they kept the animal population from revolting. napoleon made a list of rules, and told everyone how "important they are even though he was known to break them and then have them changed by the only animal who could read on the farm. none of the animals were intelligent enough to read, so they never knew if they had been changed or not which was an advantage to napoleon. napoleon constantly reminded them that if they revolted they would have to go back to mr. jones' way of things, which in retrospect was "worse" (wasn't really worse though, he was just saying that to intimidate since he didn't wanna lose his power). one of the main reasons they revolted in the first place was food, and of course if they revolt napoleon will not share food with them.