一体型舶用炉の定傾斜時自然循環特性

概要

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Experimental study on natural circulation using an model test rig was conducted at various inclination angles in order to investigate the characteristics of the decay heat removal in an integated type maine reactor. Also, effects of the secondary coolant flow rate and the electric heater power on the decay heat removal by natural circulation were studied experimentally. Thermohydraulic behavior of the primary coolant in a reactor core and a steam generator was made clear in detail at various inclination angles. Heat transfer rates at heater surface were evaluated, and they agree with Churchill's equation. Neither the secondary coolant flow rate nor the electric heater power affects the flow patterns of the primary coolant. However, the primary coolant temperature shifts higher and begins to boil in the core as the result of reducing the secondary flow rate or increasing core heater power. So, it becomes more difficult to maintain stable decay heat removal at big inclination angle.
独立行政法人海上技術安全研究所の論文
1988-05-30