AIR/WATER HYBRID PASSIVE REACTOR CAVITY COOLING APPARATUS AND METHOD FOR CORE DECAY HEAT REMOVAL OF A HIGH TEMPERATURE GAS-COOLED REACTOR

摘要

An apparatus for cooling air/water hybrid passive reactor cavity for removing decay heat of core of high temperature gas cooled reactor is provided to minimize parasitic heat loss by adopting an air cooling method during normal operation of a HTGR(High-Temperature Gas-cooled Reactor). An apparatus for cooling air/water hybrid passive reactor cavity comprises an air cooling device and a water cooling device. The air cooling device emits an air heated by residue heat of a reactor cavity into atmosphere. The water cooling device cools water heated by residue heat of the reactor cavity through heat exchange with outside. The air cooling device comprises an inlet duct(11), an upper low temperature plenum(12), a downward air duct(13), a lower low temperature plenum(14), a high temperature rising panel(15), a high temperature plenum(16), and a chimney(17). An external cold air is flowed into the inlet duct. The upper low temperature plenum collects a flowed cold air. The cold air is flowed downward by the downward air duct. An air heated by a heat of the reactor cavity is flowed upward by the high temperature rising panel. The chimney emits a heated air into atmosphere.