c59da5ca98
Previously each curve file stored x in whatever convention the vendor used (per-element Nm³/h for Jäger/GVA, per-element Sm³/h for PIK/PRK, per-m² for Aerostrip). That meant the diffuser physics couldn't read the data uniformly — selecting Aerostrip vs Jäger would feed wildly different axes to the same interpolator. All five curves now use the same canonical X: specific air flux in Nm³/(h·m² membrane). Y stays SSOTR in g O₂/(Nm³·m); coverage % is the parametric key. Per-file conversions: - jaeger-jetflex-td-65-2-g-epdm-1000: x divided by 0.18 m² perforated area (stated on the data sheet). - gva-elastox-r: x divided by 0.18 m² placeholder mirroring Jäger TD-65 (no real GVA sheet exists — see _meta note). - aerostrip-phoenix: native already in Nm³/(h·m²) — no x change. _meta area normalised to 1.0 m² per "element" so users set `elements` = total installed membrane area in m². - pik300, prk300 (Sulzer ABS 300 mm disc): native was Sm³/h/disc on X and g O₂/(Sm³·m) on Y. Converted to canonical Nm³ basis (DIN-1343) by X × 0.9319 / 0.07, Y × 1.0732. Each disc = 0.07 m² membrane. Supplier naming fixed: pikprk → sulzer, aquaconsult → aquaconsult-entec. PIK = perforated EPDM, PRK = perforated PUR. Config schema: new diffuser.membraneAreaPerElement field (nullable, default null) so a node can override the curve's stored area. When null, specificClass reads _meta.membraneArea_m2_per_element from the resolved curve. 246/246 generalFunctions tests still pass. Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
45 lines
2.2 KiB
JSON
45 lines
2.2 KiB
JSON
{
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"_meta": {
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"supplier": "Jäger Umwelt-Technik",
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"type": "Tube",
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"model": "JetFlex TD 65-2 G",
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"membrane": "EPDM",
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"tubeLength_mm": 1000,
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"totalLength_mm": 1062.5,
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"outerDiameter_mm": 65,
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"membraneArea_m2_per_element": 0.18,
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"operating": {
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"continuousFlow_Nm3h_per_element": [2, 12],
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"maxOverloadFlow_Nm3h_per_element": 20,
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"operatingMode": "continuous-or-intermittent"
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},
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"stdAir": { "temp_C": 0, "pressure_mbar": 1013.25, "RH_pct": 0 },
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"coverageBasis": "bottom-coverage-pct",
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"coverageReference": null,
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"dataQuality": "point",
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"xAxisBasis": "per-m2-membrane-Nm3h",
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"yAxisBasis": "ssotr-g-per-Nm3-per-m",
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"waterDepth_m": null,
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"source": "Jäger Umwelt-Technik 'JETFLEX TD 65-2 G Tube Diffuser' data sheet — vector chart on page 2 ('SSOTE and headloss for EPDM 1000 mm'). Curve coordinates recovered directly from the PDF vector paths on 2026-05-12 (bezier endpoints of the red SSOTE polyline and blue DWP polyline); axis calibration against the gridlines is exact.",
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"note": "Vendor sheet states neither tank-floor coverage nor water depth at which the SSOTE curve was measured — single-coverage point estimate (key '0' = unspecified), do not extrapolate across density. Native x-axis in the sheet is Nm³/h per tube; converted to canonical Nm³/(h·m² membrane) by dividing by perforated area 0.18 m²."
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},
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"ssote_curve": {
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"0": {
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"x": [11.11, 16.67, 22.22, 27.78, 33.33, 38.89, 44.44, 50.00, 55.56, 61.11, 66.67],
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"y": [8.20, 7.85, 7.57, 7.30, 7.10, 6.97, 6.85, 6.72, 6.60, 6.50, 6.40]
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}
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},
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"otr_curve": {
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"0": {
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"x": [11.11, 16.67, 22.22, 27.78, 33.33, 38.89, 44.44, 50.00, 55.56, 61.11, 66.67],
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"y": [24.52, 23.47, 22.63, 21.83, 21.23, 20.84, 20.48, 20.09, 19.73, 19.44, 19.14]
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}
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},
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"p_curve": {
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"0": {
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"x": [11.11, 16.67, 22.22, 27.78, 33.33, 38.89, 44.44, 50.00, 55.56, 61.11, 66.67],
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"y": [25.0, 27.5, 30.0, 32.5, 35.0, 37.5, 40.0, 42.0, 44.0, 46.0, 48.0]
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}
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}
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}
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