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2025 ANS Winter Conference & Expo
November 9–12, 2025
Washington, DC|Washington Hilton
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Russia withdraws from 25-year-old weapons-grade plutonium agreement
Russia’s lower house of Parliament, the State Duma, approved a measure to withdraw from a 25-year-old agreement with the United States to cut back on the leftover plutonium from Cold War–era nuclear weapons.
Song Yu, Zhao Jiaqing, Zhang Yiyang, Wu Xinxin (Tsinghua Univ)
Proceedings | 2018 International Congress on Advances in Nuclear Power Plants (ICAPP 2018) | Charlotte, NC, April 8-11, 2018 | Pages 543-548
In this paper, the influence of four different entrances and exits to flow maldistribution in air-cooled heat exchangers is presented. The flow and heat transfer are computed by the numerical solution of the governing partial differential equations including the conservation equations of mass, momentum and energy. The flow maldistribution of each heat transfer tubes of four different cases are analyzed, so as the heat transfer rate. The heat transfer rate average deviation is much smaller than flow average deviation. Slight differences of total heat transfer rate are found for different cases. The reason of this phenomenon is related to the relationship between flow and heat transfer rate and the heat resistance distribution. The flow pattern in different tubes and the resistance performance of different cases are compared.