Abstract In a worldwide pursuit for more Accident Tolerant nuclear Fuel (ATF), the quest to obtain and certify alternative nuclear fuel cladding tubes for light-water nuclear power reactors is still a key challenge. One of the facets in this program to develop more ATF is the heat transfer evaluation between the various proposed clad tubes manufactured from suitable replacement materials and the current zirconium-alloy based clad tubes used in nuclear power reactors. For the heat transfer analysis, the accurate measurement of the temperature on the heat transfer surface of heated tubes to be tested was one of the important objectives for the effective analysis of the heat transfer characteristics to the water coolant. After extensive investigations, a suitable technique was developed and validated against recognised forced convection heat transfer correlations. The results showed that this technique was well suited for external forced convection heat transfer studies from heated surfaces exposed to forced convection water coolants.

中文翻译：

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外表面温度测量，用于在外部强制对流散装水冷却剂热工水力条件下内部加热的圆柱形复合管的传热分析

摘要 在世界范围内对更多容灾核燃料 (ATF) 的追求中，寻求和认证用于轻水核动力反应堆的替代核燃料包壳管仍然是一个关键挑战。该计划中开发更多 ATF 的一个方面是对由合适的替代材料制造的各种提议的复合管与当前用于核动力反应堆的锆合金复合管之间的传热评估。对于传热分析，准确测量被测加热管传热表面的温度是有效分析水冷却剂传热特性的重要目标之一。经过广泛调查，针对公认的强制对流传热相关性开发并验证了一种合适的技术。结果表明，该技术非常适用于暴露于强制对流水冷却剂的受热表面的外部强制对流传热研究。