sepehr
2f1f7ecb80
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Mass flux used all plate gaps instead of half the pack per fluid, underestimating G and making ΔP look like zero in the UI (0.000 bar). Also show ΔP in kPa/Pa and sync the web example. Co-authored-by: Cursor <cursoragent@cursor.com>
115 lines
3.3 KiB
JSON
115 lines
3.3 KiB
JSON
{
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"name": "BPHX Water-Cooled Chiller R134a",
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"description": "Full vapor-compression cycle with brazed-plate evaporator and condenser (4-port). Both Bphx units use emergent_pressure so outlet closures (superheat / subcooling) square the DoF like Condenser/Evaporator.",
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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 + water 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": "BphxCondenser",
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"name": "cond",
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"refrigerant": "R134a",
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"secondary_fluid": "Water",
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"n_plates": 40,
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"plate_length_m": 0.40,
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"plate_width_m": 0.12,
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"target_subcooling_k": 5.0,
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"emergent_pressure": true,
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"correlation": "Longo2004",
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"dp_correlation": "SimplifiedChannel",
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"ua": 2500.0
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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": "BphxEvaporator",
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"name": "evap",
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"refrigerant": "R134a",
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"secondary_fluid": "Water",
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"n_plates": 40,
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"plate_length_m": 0.40,
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"plate_width_m": 0.12,
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"target_superheat_k": 5.0,
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"emergent_pressure": true,
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"correlation": "Longo2004",
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"dp_correlation": "SimplifiedChannel",
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"ua": 2000.0
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},
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{
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"type": "BrineSource",
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"name": "cond_water_in",
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"fluid": "Water",
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"p_set_bar": 2.0,
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"t_set_c": 30.0,
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"m_flow_kg_s": 0.40,
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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": "cond_water_out",
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"fluid": "Water",
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"p_back_bar": 2.0,
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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": 0.50,
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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_water_in:outlet", "to": "cond:secondary_inlet" },
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{ "from": "cond:secondary_outlet", "to": "cond_water_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": "fallback",
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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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