Abstract
Corrugated plate dryer (CPD) is an important steam-water separation (SWS) devices in the steam generator of Pressurized Water Reactor (PWR) nuclear power plants (NPPs), and the drainage tank (DT) in CPD determines the separation efficiency (SE). This paper designs an experimental bench to study SWS performance of a full-scale CPD commonly used in PWR NPPs. The influence of structure of the DT (including the changes of the height of DT and the number of baffles in the DT) at the lower part of CPD affects the SE, critical airflow velocity (CAV), and pressure drop is studied from the perspective of mechanism. It can be concluded that the increase in the number of baffles inside the DT enhances the CAV and SE of CPD. Meanwhile, increasing the number of baffles has a more pronounced effect on boosting the CAV than that of the height of DT within a specific range, which provides an important reference for the miniaturization design of NPPs.
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