Self-diagnosis accident handling unmanned reactor and its operation method

摘要

The objective of the present invention is to provide a self-diagnosis and accident-handling unmanned nuclear reactor, which: can passively cool down excessively generated heat without an operation of an operator when a malfunction of the nuclear reactor has occurred, wherein a cooling operation for safety measures can be carried out in a completely passive manner without a separate control command by means of a change in environmental conditions such as the structure and pressure of the nuclear reactor; and has a simpler structure compared to that of a conventional nuclear reactor safety system. Another objective of the present invention is to provide a self-diagnosis and accident-handling unmanned nuclear reactor, which performs heat exchange by using a two-phase heat transfer mechanism, wherein heat exchange performance is maximized by introducing a spray-type heat exchanger having an optimized structure in which channels are three-dimensionally arranged, such that heat exchange can be effectively performed by two-phase heat transfer; and can also easily and passively control heat exchange without a separate control means by using saturated steam pressure.