The capacities are based on approx. 4 K subcooling ahead of valve. |
If the subcooling is too low, flash gas may occur when the fans start. |
This validation has left many questions unanswered, especially since the magnitude of the oscillations is much larger than the subcooling margins that exist for most CANDU stations. |
For design-oriented simulations, superheating or subcooling degrees are used as input. |
The evaporator capacity used must be corrected if subcooling deviates from 4 K. The corrected capacity can be obtained by dividing the evaporator capacity by the correction factor given below. |
One of the important parameters that determines calandria tube dry-out is the degree of subcooling available in the moderator. |