Thermo-hydraulic characterization of a multi-material PBF-LB/M heat exchanger: measurement data, analysis scripts, and rating model

Measurement data, analysis scripts, and the analytical rating model accompanying the manuscript "Additive manufacturing of multi-material parts - Design and experimental validation of a high-performance compact heat exchanger" (Meyer, Messmann, et al., Leibniz University Hannover). The data set covers the complete chain from raw test-bench recordings to the reported figures for two specimens: a multi-material heat exchanger with CuCrZr offset-strip fins on 316L minichannel plates, built by selective powder deposition, and a single-material 316L reference of nominally identical geometry. Both were tested at seven air-side flow rates (50 to 350 standard L/min) with repeated points for repeatability. Running the included Python scripts on the raw data reproduces the manuscript figures 11 to 14, the result tables, and the reported CSV files (fixed Monte Carlo seed, pinned environment with SHA-256 hashes). Data and documentation are released under CC BY 4.0, the source code under the MIT License. See README.md for the data dictionary, the reproduction guide, and check values.