Abstract A steam generator design for the Integral Inherently Safe Light Water Reactor (I2S-LWR) based on microchannel heat exchanger (MCHX) technology is discussed. An experimentally validated heat transfer and pressure drop model is applied to the development of steam generator design for this LWR. The potential of MCHX technology to provide compact, high power density steam generators for integral inherently safe reactors is demonstrated. A Rankine cycle model for a system with a once-through MCHX steam generator is developed and the plant thermal efficiency is quantified. Heat transfer and pressure drop in the MCHX steam generator design for I2S-LWR is compared with those in a conventional tubular steam generator design. A simple exergy analysis is performed for two alternative I2S-LWR power cycles, the flash Rankine cycle and a Rankine cycle with once-through steam generation, to demonstrate the advantages of using an integral steam generator.

中文翻译：

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用于设计整体固有安全轻水反应堆的微通道蒸汽发生器

摘要 讨论了基于微通道换热器（MCHX）技术的整体本质安全轻水反应堆（I2S-LWR）的蒸汽发生器设计。经过实验验证的传热和压降模型应用于此 LWR 蒸汽发生器设计的开发。展示了 MCHX 技术为整体本安反应堆提供紧凑、高功率密度蒸汽发生器的潜力。为具有直流式 MCHX 蒸汽发生器的系统开发了兰金循环模型，并量化了工厂的热效率。将 I2S-LWR 的 MCHX 蒸汽发生器设计中的传热和压降与传统管式蒸汽发生器设计中的传热和压降进行了比较。对两个替代的 I2S-LWR 功率循环进行了简单的火用分析，