Study on habitability system of main control room with passive cooling channel as heat sink

The Fukushima nuclear power plant accident in Japan makes nuclear power designers realize that the safety of the nuclear power plant cannot be guaranteed only by the redundant design of active equipment, but the use of passive cooling will improve the reliability and stability of the final heat sink in the main control room, so as to ensure the feasibility of the residence of the main control room. The development of a safer, more reliable and low-cost passive cooling system for the main control room is one of the goals of the development of the current nuclear power technology. In this paper, the passive cooling channel as heat sink is described, relying on the principle of natural ventilation, it can safely and reliably remove the residual heat of the main control room, and realize the habitability of the main control room after power failure of the whole plant depending on a low engineering cost. Taking the main control room of a nuclear power plant as the research object, a mathematical model is established to determine the system design parameters to realize its feasibility in this paper. At the same time, the ambient temperature of the main control room is analysed with the passive cooling channel as the heat sink on the condition of the power failure accident of the whole plant, the habitability of the main control room is verified, and the rationality of the design scheme is proved.