CHG 2314 Final: CHG 2314 FinalExamSummer04
31 Jan 2019
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Page 1 of 4: open textbook / class notes examination, the examination consists of two parts: Part a (40%) attempt 2 questions out of 3, each worth 20 marks. Part b (60%) attempt 2 questions out of 3, each worth 30 marks: state clearly all assumptions, it is strongly recommended to describe in words the outline of your solution. Part a 40% attempt 2 of the following 3 questions. A long rod passes through the opening in an oven having an air temperature of 400oc and is pressed firmly onto the surface of a billet. Thermocouples imbedded in the rod at locations 25 and. 120 mm from the billet register temperatures of 325 and 375oc, respectively. A cylindrical heating element (l = 0. 2 m, d = 0. 02 m), whose surface is maintained at a constant temperature ts, is to be placed in the room in which air is at temperature te (te < ts).
