{ "id": "S-07", "title": "Anti-fractionation condenser / mixing reservoir (passive)", "type": "system", "gap_refs": [ "G3" ], "claim_scaffold": { "independent": [ "A condensate-return mixing reservoir sized from the fractionation ODE time constants to passively suppress composition drift without an actuator." ], "dependents": "Dependents: reservoir volume law; space (no-actuator) constraint.", "filed_overlap": "Nearest filed: none. DISTINCT: passive complement to S-01." }, "enabling_assets": [ "src/analysis/fractionation_model.py" ], "novelty": { "score": 0.524, "axis": 3, "backends_used": [ "openalex", "crossref" ], "backends_skipped": [ "epo_ops", "patentsview" ], "n_examined": 16, "closest_art": [ { "id": "10.1109/ichr.2006.321327", "title": "Analysis and stabilization of the passive walking robot via analogy with the Phase Locked Loop circuits", "year": 2006, "source": "crossref", "url": "https://doi.org/10.1109/ichr.2006.321327", "venue": "2006 6th IEEE-RAS International Conference on Humanoid Robots", "snippet": "", "cited_by": 3, "term_overlap": 0.333 }, { "id": "10.4271/2000-01-2321", "title": "Effects of Condenser Two-Phase Flow Characteristics on a Capillary Pumped Loop", "year": 2000, "source": "crossref", "url": "https://doi.org/10.4271/2000-01-2321", "venue": "SAE Technical Paper Series", "snippet": "<div class=\"htmlview paragraph\">One of the intrinsic characteristics found in CPL operation is the oscillatory behavior of the pressure drop, even noted under seemingly steady operation. This study focused on the role of the condensing process and its intrinsic instabilities upon the differential pressure oscillations recorded in the CPL. Through an analytical study of condensing instabilities and an experimental study based on the correlation between pressure records and condensing flow visualization, the impact of slug flow phenomenon occurring in the condensing path was invest", "cited_by": 2, "term_overlap": 0.333 }, { "id": "10.4271/911522", "title": "Thermal Test of an Ammonia Two-Phase Loop Results of Condenser Study", "year": 1991, "source": "crossref", "url": "https://doi.org/10.4271/911522", "venue": "SAE Technical Paper Series", "snippet": "<div class=\"htmlview paragraph\">Future large spacecraft will require thermal control systems capable of transporting large amount of heat over long distances. Two phase fluid loops are being developed in order to satisfy these requirements.</div>\n<div class=\"htmlview paragraph\">A 600 W mechanically pumped two phase elementary loop, using ammonia as the working fluid, has been built and tested at Aerospatiale-Cannes. The general operating principles of the loop and the thermal performances of the horizontal smooth one-tube condenser, uniformly cooled by water have been", "cited_by": 1, "term_overlap": 0.333 } ], "retrieved": "2026-06-09", "known_blockers": [ "thin art" ] }, "certainty": { "key_quantity": "system CHF (W/cm^2, est.)", "lead_proxy": "HFO-1336mzz-Z + vinylene carbonate 70:30 (discovery)", "ci90": [ 40.4, 210.1 ], "median": 105.3, "axis": 3, "calibration": "thermo sigma AAD 0.5%, Tb 0.1C (Phase-B); MC N=20k seed 7" }, "urgency": { "score": 1.0, "axis": 5, "primary_driver": "ECHA_PFAS", "drivers": [ { "driver": "ECHA_PFAS", "nearest_date": "2025-12-31", "citation": "ECHA Annex XV restriction report, submitted 13 Jan 2023 by DE/NL/DK/SE/NO; RAC/SEAC opinion-forming 2023-2025.", "applies_because": "displaces 306-94-5, 307-34-6, 311-89-7, 355-42-0, 756-13-8" }, { "driver": "AI_DC_GROWTH", "nearest_date": "2026-06-09", "citation": "IEA Electricity 2024 / datacenter energy outlooks; rack power densities exceeding air-cooling limits drive two-phase adoption.", "applies_because": "secular demand" } ] }, "proof": { "tier0_consensus": 0.2, "engines_min": 1, "limiting_component": "692-49-9", "md_tier": 2, "axis": 4, "md_grade": "full", "md_seeds": 4, "md_component_sigma": { "692-49-9": { "sigma_mNm": 16.06, "sem": 0.29, "n_seeds": 4 }, "872-36-6": { "sigma_mNm": 38.17, "sem": 1.02, "n_seeds": 4 } }, "md_blend_sigma": { "sigma_298_mNm": 19.63, "dsigma_dT_mNm_per_K": -0.0576 }, "chf_input_rel_uncertainty": 0.25, "tier_status": { "tier0_solver_consensus": "weak", "tier1_md": "full", "tier2_cfd": "pass", "tier3_wetlab": "not_run" } }, "fto_flag": "LOW", "fto_axis": 5, "fto_chart": { "max_overlap": 0.045, "heuristic_risk": "LOW", "n_blockers_compared": 2 }, "design_space_cells": { "wins": [ { "use_case": "defense_space", "binary_winner": "cis-1,1,1,4,4,4-hexafluoro-2-butene+vinylene carbonate 90:9", "score": 0.5923 } ] }, "property_card": { "epsilon": 12.827, "mu_mPas": 0.0167, "miscibility": "miscible (single phase)" }, "tco": { "vs_air": { "delta_tco_usd_per_mw_median": 1500000.0, "ci90": [ 750000.0, 2600000.0 ], "p_lead_cheaper": 1.0, "confidence_tag": "PLACEHOLDER" }, "vs_novec": { "delta_tco_usd_per_mw_median": 2300000.0, "ci90": [ 1100000.0, 4500000.0 ], "p_lead_cheaper": 1.0, "confidence_tag": "PLACEHOLDER" }, "density_source": "MD_NPT (Modal campaign)" }, "cfd_tier2": { "peak_U_cold": 0.257273, "peak_U_hot": 0.502571, "capillary_sensitivity": 0.512 }, "value_driver": "Passive-hardware royalty for space/sealed loops.", "filing_route": "provisional", "score": { "N": 3, "U": 5, "C": 3, "P": 4, "F": 5, "total": 23, "formula": "2N+U+C+P+F (max 30)" }, "status": "counsel_ready", "expected_casualty": false, "honesty": { "computational_not_measured": true, "no_best_fluid_claim": true, "language_doc_compliant": true } }