4-QUADRANT AIR-WATER COMBINED COOLING PASSIVE FEEDWATER SYSTEM

摘要

A 4-quadrant water-air hybrid cooling passive feed water cooking system comprises a water cooling heat exchanger positioned outside of a containment building and connected to an interior of the containment building to cool heat of a steam generator by using a water cooling scheme, a cooling water tank including the water cooling heat exchanger, storing cooling water for condensing steam generated by the steam generator, and positioned outside of the containment building, an evaporated steam pipe connected to the cooling water tank and allowing cooling water steam generated by the water cooling heat exchanger within the cooling water tank to be introduced therethrough, an air cooling heat exchanger connected to the evaporated steam pipe and cooling steam introduced to the evaporated steam pipe to liquefy the cooled steam, a condensate recovery pipe refilling the steam liquefied in the air cooling heat exchanger to the cooling water tank, an air induction duct, as a hollow pipe formed in a perpendicular direction outside of the air cooling heat exchanger and having a single air inlet and a single air outlet, inducing an air flow outside of the air cooling heat exchanger, and a passive feed water cooling device including a cooled air blowing unit installed within the air induction duct to forcibly generate air flow.