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The Design and Research on a Passive Containment Residual Heat Removal Exchanger

The Passive Containment Cooling System is the key means of removing core residual heat during severe LOCA accidents. Based on a certain type of nuclear power plant, a passive containment residual heat removal exchanger were designed to be row-tube type and researched in this article. The major design parameters and dynamic response characteristics of this exchanger were given. The analysis showed that the number of pipe are closely related with the fluid flow condition in the heat exchanger tube, the pressure in the containment changes linearly with the steam quality under LOCA, and this heat exchanger can ensure the integrity of the containment under severe accident conditions.