To introduce the printed circuit steam generator (PCSG), the design methods were developed, and the CFD analysis was performed. The design considerations were divided into three parts: thermal sizing, structural integrity evaluation, and specific design for water channels. The thermal sizing was performed by a 1D heat transfer analysis and the channel length was increased until it satisfied the target thermal power. The structural integrity was evaluated based on the ASME code and the calculated stresses were compared to the allowable stress. The flow instability, flow maldistribution, and fouling have negative effects on the performance. In order to prevent such phenomena, the mixing channel and orifice were designed. The CFD analysis on the final design of the PCSG was performed to evaluate the steam state at the outlet and flow distribution. Although a flow maldistribution (∼12 %) was observed, the steam state at the outlet was satisfied with the operating conditions.

为了介绍印刷电路蒸汽发生器（PCSG），开发了设计方法，并进行了CFD分析。设计考虑分为三个部分：热定型，结构完整性评估和水道的特定设计。通过1D传热分析进行热定型，并增加通道长度，直到满足目标热功率为止。根据ASME规范评估结构完整性，并将计算出的应力与允许应力进行比较。流量不稳定，流量分布不均和结垢会对性能产生负面影响。为了防止这种现象，设计了混合通道和孔口。对PCSG的最终设计进行了CFD分析，以评估出口处的蒸汽状态和流量分布。