๐จ Air-Cooled Steam Condenser Sizer (ACC)
Design and size power plant A-frame Air-Cooled Condensers (ACC): steam turbine backpressure, initial temperature difference (ITD), fan cooling air flow, and auxiliary electrical power.
โก Fortran 90 Engine
Double Precision (IEEE 754)
โ ISO / ASME Validated
Heat Exchangers
๐ Solver Telemetry
โ ACTIVE
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๐
Released
Jun 2026
โฑ๏ธ Latency
< 1 ms
โก Power Plant A-Frame Air-Cooled Condenser Bundle
Real-time visual simulation: Steam turbine exhaust manifold, inclined finned tubes, and forced draft cooling fans๐ Configuration & Presets
โก 400 MW CCGT ACC (12 Bays)
โ๏ธ Desert Solar CSP (42ยฐC)
๐ชต Biomass CHP Plant
โป๏ธ Waste-to-Energy Plant
ACC Thermal Formulation:
โข Saturation Temp: Tsat(Pback) from IAPWS-IF97 steam tables
โข Initial Temp Difference: ITD = Tsat โ Tamb [ยฐC]
โข Thermal Heat Duty: Qฬacc = แนsteam ยท hfg [MWth]
โข Fan Auxiliary Power: Pfan = (Vฬair ยท ฮPair) / ฮทfan [kWe].
โข Saturation Temp: Tsat(Pback) from IAPWS-IF97 steam tables
โข Initial Temp Difference: ITD = Tsat โ Tamb [ยฐC]
โข Thermal Heat Duty: Qฬacc = แนsteam ยท hfg [MWth]
โข Fan Auxiliary Power: Pfan = (Vฬair ยท ฮPair) / ฮทfan [kWe].
๐ ACC Performance Results
๐ Output Summary
Condenser Heat Rejection Duty (Qฬ)
30.18 MWth
ITD: 28.0 ยฐC | Steam Tsat: 43.0 ยฐC
4 Fans @ 7.32m
Total Fan Electrical Power
81 kWe
20.2 kWe per fan
Cooling Air Volumetric Flow
438 mยณ/s
Air outlet = 71.0 ยฐC
Total Finned Heat Transfer Area
4713 mยฒ
4 A-frame bays
Overall Heat Transfer (U)
6403.8 W/(mยฒยทK)
Air-side finned reference
๐ Turbine Backpressure Pback (mbar) vs Ambient Temp Tamb (ยฐC)
๐ Fan Auxiliary Power (kWe) vs Steam Mass Flow (t/h)
================================================================= THERMOFLUIDCALC โ AIR-COOLED STEAM CONDENSER SIZING REPORT ================================================================= Case Title : Biomass Cogeneration High-Vacuum Condenser Steam Exhaust Flow : 45.00 t/h (12.50 kg/s) Ambient Temperature (Tamb) : 15.0 deg C Turbine Backpressure (Pback): 85.0 mbar abs (Tsat = 42.97 deg C) ACC Array Geometry : 4 A-frame bays, 4 fans (Diam = 7.32 m) ----------------------------------------------------------------- HEAT REJECTION DUTY (Q) : 30.18 MWth INITIAL TEMP DIFF (ITD) : 27.97 deg C Cooling Air Volumetric Flow: 437.7 m3/s Air Outlet Temperature : 70.96 deg C Total Finned Bundle Area : 4713 m2 Overall Heat Transfer (U) : 6403.82 W/(m2.K) TOTAL FAN ELECTRICAL POWER : 80.8 kWe (0.08 MWe) =================================================================
๐ Calculation Methodology & ACC Power Plant Standards
Direct Dry Cooling A-Frame Configuration
Exhaust steam from the steam turbine flows through large overhead steam distribution ducts into inclined finned tube bundles arranged in a 60ยฐ A-frame to minimize footprint and fan power.
Initial Temperature Difference (ITD)
ITD is the primary design metric in dry cooling: $ITD = T_{sat}(P_{back}) - T_{amb}$. Lower ITD values achieve deeper vacuum but require larger heat transfer areas.
Key Engineering Assumptions
- Single-row or two-row flat steel/aluminum finned tube bundles.
- Forced draft axial fans with typical static efficiency $\eta = 65\%$.
- Zero water consumption, suitable for arid regions and water-constrained power plants.