feat(schema): thermal sub-table additions (#152)#190
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Pure additive — 7 new optional fields on ThermalProperties for cryogenic + coolant work: - emissivity (0–1, dimensionless) — critical for cryo radiation shielding budgets (polished Al ≈ 0.04, anodized ≈ 0.8) - thermal_diffusivity (mm²/s) — heat-pulse propagation - min_use_temp_K (K) + cryogenic_compatible (bool) — Delrin/PEEK brittleness boundary, separate from the general min_service_temp (which is in °C and represents operational lower bound) - integrated_thermal_conductivity (W/m) — NIST ∫k dT for cryogenic heat-leak budgets - latent_heat_fusion / latent_heat_vaporization (kJ/kg) — for liquids and phase-change coolants Plus matching `*_qty` Pint accessors for the 4 new dimensional fields. Tests: tests/test_thermal_fields.py (7 tests) + full corpus regression. Closes #152
This was referenced May 6, 2026
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Summary
Pure additive — 7 new optional fields on
ThermalPropertiesfor cryogenic + coolant work.emissivitythermal_diffusivitymin_use_temp_Kmin_service_tempwhich is °C and operational)cryogenic_compatibleintegrated_thermal_conductivitylatent_heat_fusionlatent_heat_vaporizationPlus matching
*_qtyPint-Quantity accessors for the 4 new dimensional fields.min_use_temp_Kis intentionally separate from the existingmin_service_temp(°C). They represent different concepts: operational lower bound vs. brittleness threshold. Both fields kept; users pick the one that matches their constraint.Test plan
pytest tests/test_thermal_fields.py— 7 tests passruff checkcleanCloses #152