The popularity of closed cooling tower makes it used in various industries. With the improvement of function and technology, it will play a role in pressurized water reactor nuclear power plant in the future. Domestic pressurized water to nuclear power plants are generally divided into three circuits, so ordinary cooling equipment can not meet the requirements, only closed cooling tower can be applied. The pressurized water brings the heat generated by the core to the second loop through the steam generator. The water in the second loop changes into steam under the heating action of the steam generator, and the steam drives the steam turbine to do power generation. The steam passing through the steam turbine at this time changes into the mixture of soft water, and then changes into water after cooling in the third loop. However, in traditional nuclear power plants, if the water cooling is close to rivers or oceans, it can be recycled in a single way and directly eliminated after entering the condenser. The temperature rise of only a few degrees is not harmful to the environment. However, due to the problem of water quality, scaling and corrosion and other hazards will be generated. When closed cooling towers are used in PWR nuclear power plants, light water can be used as coolant and moderator, mainly composed of nuclear steam supply system, turbo-generator system and other auxiliary systems. After the coolant absorbs the heat energy released by nuclear fuel fission in the core, it passes the heat to the second circuit to generate steam through the steam generator, and then enters the steam turbine to do work and drive the generator to generate electricity. In this way, not only can the heat in the pressurized water reactor plant be fully dissipated and utilized, but also will not cause harm to the environment. In addition to the advantages of the closed cooling tower itself, it will not cause scaling and corrosion hazards, and extend its service life.
