Research on the utilization of waste heat from thermal drainage and centralized heating and cooling in nuclear power plants
For the problems of heat island and energy wastage due to direct drainage of the thermal discharge water of the a nuclear power project in the eastern coast of China,a system was proposed that uses seawater source heat pump units to absorb the waste heat from the thermal discharge water of nuclear power to produce 55℃hot water and absorb the cold seawater used by the nuclear power plant to produce 6℃cold water or off-site water chiller to produce cold water.The scheme of using the system to produce hot and cold water for central heating and cooling was introduced in detail,and its economic and environmental effects were analyzed.The results show that this waste heat utilization system can realize centralized heating,cooling,and sanitary hot water triple supply services in the nuclear power plant area,living quarters,and adjacent green energy towns.The waste heat utilization method of this project has a 39%and 55%higher energy-saving effect than traditional air conditioners and electric water heaters,and the economic distance of the user quarters outside the nuclear power plant is about 8 km.The utilization of waste heat from thermal discharge water must consider heating and cooling and sanitary hot water as a whole,and the economic contribution of heating and cooling is close to half.The research results can provide an important reference for the utilization of waste heat in nuclear power plants.
nuclear power plantwarm drainagewaste heat utilizationcentralized heating and cooling
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