The invention relates to the technical field of safety facilities of a reactor, and discloses a passive residual heat removal
system for a high temperature gas cooled reactor. The
system comprises a plurality of sets of independent residual heat removal sequences, wherein each set of residual heat removal sequence comprises a
water cooled wall (1), an air cooler (5), an
air cooling tower (6), a
reactor pressure vessel (7) and a reactor cabin (8); the
water cooled wall (1) is positioned in the reactor cabin (8) and encircles the
reactor pressure vessel (7); the installation position of the
air cooling tower (6) is higher than that of the
water cooled wall (1); and the air cooler (5) is arranged in the
air cooling tower (6). A simple passive residual heat removal
system is designed by utilizing a passive
safety design concept and a little equipment, is only dependent on natural circulation when operated, is not required to be driven by any external force, and is provided with respective independent redundant circulation loops, so that the system is prevented from failing due to the failure of an active part, and the
operation safety of the reactor is improved.