# In the previous problem (see Exercise 14.1), the reader was asked to nd the void fraction of the…

In the previous problem (see Exercise 14.1), the reader was

asked to nd the void fraction of the coolant of at the top of a BWR fuel

assembly (i.e., the volume of the coolant α that was converted into

steam). Now suppose that we would like to know what percentage of the total

mass of the coolant is converted into steam at this point. What is this percentage

called, and what is its value at the top of the core (z = H)?

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In the previous problem (see Exercise 14.1), the reader was asked to nd the void fraction of the…

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Exercise 14.1

Assume that the average density of the coolant exiting a BWR

fuel assembly is 0.155 g/cm3. What fraction of the total volume of the coolant

has been converted into steam at the exit of the fuel assembly in this case?