sepehr
5bd180b5b8
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Capture uncommitted solver robustness work (regularization, domain errors, linear solver lifecycle, tube DP/MSH), web workbench updates, and synced BMAD skills across IDE agent folders before starting BPHX pressure-drop. Co-authored-by: Cursor <cursoragent@cursor.com>
123 lines
3.7 KiB
JSON
123 lines
3.7 KiB
JSON
{
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"name": "Air-Cooled Chiller R134a with Condenser Fan",
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"description": "Same emergent-pressure air-cooled chiller as chiller_aircooled_r134a.json, with an explicit Fan on the condenser air path: AirSource → Fan → Cond(secondary) → AirSink. Fan curve sized for ~1.2 kg/s (~1.0 m³/s) against the coil secondary ΔP (150 Pa). secondary_humidity_ratio MUST match AirSource psychrometrics (W at T_dry, RH, P).",
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"fluid": "R134a",
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"fluid_backend": "CoolProp",
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"circuits": [
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{
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"id": 0,
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"name": "Refrigerant + secondary loops",
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"components": [
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{
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"type": "IsentropicCompressor",
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"name": "comp",
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"isentropic_efficiency": 0.70,
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"t_cond_k": 318.15,
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"t_evap_k": 278.15,
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"superheat_k": 5.0,
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"emergent_pressure": true,
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"displacement_m3": 6.5e-5,
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"speed_hz": 50.0,
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"volumetric_efficiency": 0.92
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},
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{
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"type": "Condenser",
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"name": "cond",
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"ua": 2500.0,
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"emergent_pressure": true,
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"subcooling_k": 5.0,
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"secondary_fluid": "Air",
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"secondary_humidity_ratio": 0.01412,
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"dp_model": "isobaric",
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"secondary_rated_pressure_drop_pa": 150,
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"secondary_rated_m_flow_kg_s": 1.2
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},
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{
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"type": "IsenthalpicExpansionValve",
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"name": "exv",
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"t_evap_k": 278.15,
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"emergent_pressure": true
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},
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{
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"type": "Evaporator",
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"name": "evap",
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"ua": 1468.0,
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"emergent_pressure": true,
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"secondary_fluid": "Water",
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"dp_model": "isobaric",
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"secondary_rated_pressure_drop_pa": 40000,
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"secondary_rated_m_flow_kg_s": 0.4778
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},
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{
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"type": "AirSource",
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"name": "cond_air_in",
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"p_set_bar": 1.01325,
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"t_dry_c": 35.0,
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"rh": 40.0,
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"m_flow_kg_s": 1.2,
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"fix_pressure": false,
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"fix_temperature": true,
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"fix_mass_flow": true
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},
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{
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"type": "Fan",
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"name": "cond_fan",
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"fluid": "Air",
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"speed_ratio": 1.0,
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"air_density_kg_m3": 1.15,
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"design_flow_m3_s": 1.04,
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"curve_p0": 250.0,
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"curve_p1": 0.0,
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"curve_p2": -20.0,
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"eff_e0": 0.65,
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"eff_e1": 0.0,
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"eff_e2": 0.0
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},
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{
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"type": "AirSink",
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"name": "cond_air_out",
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"p_back_bar": 1.01325,
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"fix_pressure": true
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},
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{
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"type": "BrineSource",
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"name": "evap_water_in",
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"fluid": "Water",
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"p_set_bar": 3.0,
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"t_set_c": 12.0,
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"m_flow_kg_s": 0.4778,
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"fix_pressure": false,
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"fix_temperature": true,
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"fix_mass_flow": true
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},
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{
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"type": "BrineSink",
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"name": "evap_water_out",
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"fluid": "Water",
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"p_back_bar": 3.0,
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"fix_pressure": true
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}
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],
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"edges": [
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{ "from": "comp:outlet", "to": "cond:inlet" },
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{ "from": "cond:outlet", "to": "exv:inlet" },
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{ "from": "exv:outlet", "to": "evap:inlet" },
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{ "from": "evap:outlet", "to": "comp:inlet" },
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{ "from": "cond_air_in:outlet", "to": "cond_fan:inlet" },
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{ "from": "cond_fan:outlet", "to": "cond:secondary_inlet" },
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{ "from": "cond:secondary_outlet", "to": "cond_air_out:inlet" },
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{ "from": "evap_water_in:outlet", "to": "evap:secondary_inlet" },
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{ "from": "evap:secondary_outlet", "to": "evap_water_out:inlet" }
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]
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}
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],
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"solver": {
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"strategy": "newton",
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"max_iterations": 300,
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"tolerance": 1e-6
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}
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}
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