Data underlying Chapter 7 of the PhD thesis: Directed Energy Deposition: an Additive Manufacturing Technology for Large High-Temperature Compact Heat Exchangers: Process characterization and fluid dynamic performance

Surface finishing is often required for heat exchangers built using Additive Manufacturing to meet the desired pressure drop specifications. Moreover, the highly textured as-built surfaces result in a measured pressure drop higher than what is predicted by current correlations. The study focused on evaluating the pressure drop and friction factor variations depending on the type of surface and its conditions, with channels fabricated using laser powder directed energy deposition. After testing, the samples were destructively sectioned to obtain geometric and detailed surface texture information. This dataset corresponds to the raw data for the pressure drop testing and surface measurements that support the dissertation for Paul Gradl (Chapter 7, Directed Energy Deposition: an Additive Manufacturing Technology for Large High-Temperature Compact Heat Exchangers: Process characterization and fluid dynamic performance.)

采用增材制造（Additive Manufacturing）制备的换热器通常需进行表面处理，以满足预设的压降规格要求。此外，高粗糙度的成型后原始表面（as-built surface）会导致实测压降高于现有关联式的预测值。本研究聚焦于评估采用激光粉末定向能量沉积（Laser Powder Directed Energy Deposition）制备的流道在不同表面类型及其状态下的压降与摩擦因子变化规律。测试完成后，对试样进行破坏性剖切以获取几何参数与详细的表面形貌信息。本数据集对应支撑Paul Gradl博士学位论文（第7章：《定向能量沉积（Directed Energy Deposition）：面向大型高温紧凑型换热器的增材制造（Additive Manufacturing）技术：工艺表征与流体动力学性能》）的压降测试与表面测量原始数据。