Abstract
A concept of SEAGUL system (Snow Enhancing Atomic-power Generation UtiLity) is proposed in this paper. Lowering the temperature of sea water for cooling of atomic-power plant will make a efficiency of power generation better and bring several ten MW additional electric power for 1356 MW class plant. The system concept stands an idea to use huge amount of seasonal storage snow for cooling water temperature control. In a case study for the Kashiwazaki-Kariwa Nuclear Power Station, it is estimated to coll down the sea water of 29℃ to 20℃ by 80 kt snow for 3 hours in a day would brought 60MWh electric power per a day. Annually 38.4Mt of stored snow will bring 1800 MWh electric power.
