EMERGENCY POWER SUPPLY SYSTEM

摘要

PROBLEM TO BE SOLVED: To enable a stable supply of emergency power when all power sources are lost.

SOLUTION: An emergency power supply system includes: a chemical heat storage facility 11 that includes a reaction vessel 16 filled with a heat storage medium 28 and a storage container 17 connected to the reaction vessel via a communication pipe 18 and stores heat using a chemical reaction of the heat storage medium to radiate the heat; a first heat exchange loop 13 for performing heat exchange between the storage container and a nuclear reactor vessel primary system to heat the storage container; a thermoelectric conversion device 12 for generating electricity by a temperature difference between a high-temperature part 12A and a low-temperature part 12B; a second heat exchange loop 14 for performing heat exchange between the reaction vessel and a high-temperature part of the thermoelectric conversion device to heat the high-temperature part; and a final radiation cooling loop 15 for performing heat exchange between a low-temperature part of the thermoelectric conversion device and a final heat sink 25 to cool the low-temperature part. Further, a valve disposed in the first heat exchange loop 13 passively open-operates when power is lost to cause the storage container to be heated by a nuclear reactor vessel primary coolant to radiate the heat stored in the chemical heat storage facility 11 so that the thermoelectric conversion device 12 generates power using the heat.

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