Inside each generator are approximately 10,000 pipes through which the radioacti
ID: 1852335 • Letter: I
Question
Inside each generator are approximately 10,000 pipes through which the radioactive water flows. 1 don't know all the exact specifications, but we will assume some reasonable numbers to allow us to calculate the performance. Assume the water from the reactor core enters the steam generator at 317 C and that the steam generator is operating at 277 C (this is the pipe wall temperature for the entering water). In one tube the water flows at 1 kg/s, and the tube is 5 cm in diameter and 20 m long. The tube is made of commercial steel (not really, but for our calculations it is). Use properties of saturated water at the film temperature for this problem. The water is actually under higher pressure, but our book does not have properties at pressures other than saturation. What is the minimum pressure of the radioactive water to keep it from boiling (hint: this is a thermodynamics question, not a heat transfer question. It's a review!) What is the distance before the flow is fully developed in the pipe? What is the temperature of the radioactive water leaving the steam generator (at x = 20 m)? How much heat is transferred from one tube in the steam generator to the surrounding water (the water outside the pipe)? Note: this water is boiling. What is the pressure drop along one pipe?Explanation / Answer
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