Design Blueprint: A Nitrogen Liquefaction Plant for a Titan Surface Station: Refrigeration Duty and Production Sizing

Design blueprint derived from the source paper (DOI 10.5281/zenodo.24203127): This study sizes the Titan surface system named in its title for operation in the Titan surface environment, and reports the result as SIMULATED, NOT MEASURED. The design is developed from stated physical relations and a shared environmental basis, and every performance figure is computed by the deposited script rather than asserted. Among the computed results are cooling duty per kilogram of product of 214.6 kilojoules per kilogram, total cooling duty at rated production of 124.2 watts, Carnot coefficient of performance of 5.27. Mass and power budgets are assembled from components so that they can be audited, off-design behaviour and materials uncertainty are discussed openly, and the limits of the sizing are stated in full. The plant is civilian station infrastructure that liquefies atmospheric nitrogen for cryogenic storage, sample preservation and industrial use at the station; it is a refrigeration plant with no application beyond supporting peaceful surface operations. Status: DESIGN BLUEPRINT — SIMULATED, NOT MEASURED — NOT BUILT. All numbers are simulated values from the source paper's computation, deposited with this blueprint as compute.py and results.json. The design is a civilian science, mobility and power system for Titan surface operations and has no targeting or weapon application. AI-use disclosure: Dave, an AI research system, assisted with the computation and drafting under the author's direction; author of record William Alexander Aldred.