ThermoFluidCalc Engineering Report

Steam Trap Sizing & Flash Steam Recovery — 2026-08-23 20:50:11
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♨️ Steam Trap & Flash Recovery

Size steam trap discharge capacities (with safety factors), calculate flash steam percentage, condensate return pipe diameter, and energy savings.

⚡ Fortran 90 Engine Double Precision (IEEE 754) ✓ ISO / ASME Validated
📊 Solver Telemetry ● ACTIVE
👁️ Consultations 31
⚡ Calculs faits 27
💾 Téléchargements 387 📦 Code Fortran 4.4 KB
📅 Mise en service Jun 2026
⏱️ Latence < 1 ms
⚡ Outils & Rapports :
💾 Télécharger Fortran 90

♨️ Steam Trap Condensate Drainage & Flash Vessel Phase Separation

Real-time visual simulation of flash steam re-evaporation & energy recovery

📝 Configuration & Presets

💧 Steam Main Drip Leg (20 bar) ♨️ Process Reboiler (5000 kg/h) 🏥 Autoclave Fast Warmup 🏢 HVAC Heating Battery
⚡ Steam Pressures & Loads
0.0 = atmospheric vented return
Drip legs: 2.0x, Modulating exchangers: 1.5–2.0x
🛠️ Steam Trap Mechanism & Economics
Key Thermodynamic Formulations:
• Flash Steam %: xflash = (hf1 − hf2) / hfg2 · 100%
• Flash Flow: ṁflash = ṁc · xflash
• Design Trap Capacity: Qrated = ṁc · SF
• Return Line ID: D = √[4 Qflash / (π · Vallow)]

📊 Trap & Flash Recovery Results

📊 Output Summary
💾 Fortran Source

Recommended Trap Discharge Sizing
Minimum Trap Capacity = 3,000 kg/h
Ball Float & Thermostatic (Continuous Modulating Discharge)
Flash Steam Generation (%) 7.8 % Mass = 94.1 kg/h
Annual Energy Value Recoverable $15,804 /yr Based on 6000 operating hours
Flash Vapor Volumetric Flow 155.4 m³/h ΔP Across Trap = 3.5 bar
Condensate Line Nominal ID DN 70 mm Sized for two-phase velocity

📈 Flash Steam Generation (%) vs Supply Pressure P₁

📉 Recommended Return Pipe Diameter vs Condensate Load

=================================================================
 THERMOFLUIDCALC — STEAM TRAP SIZING & FLASH STEAM REPORT
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Case Title                 : Pharmaceutical Autoclave / Sterilizer Fast Warmup
Steam Supply Pressure (P1) : 3.50 bar(g) (4.51 bar a)
Condensate Return (P2)     : 0.00 bar(g) (1.01 bar a)
Running Condensate Flow    : 1,200.0 kg/h
Trap Safety Factor (SF)    : 2.50 x
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Required Trap Sizing Cap.  : 3,000.0 kg/h
Flash Steam Percentage     : 7.84 %
Flash Steam Mass Produced  : 94.07 kg/h
Flash Vapor Volumetric Flow: 155.43 m3/h
Condensate Return Line ID  : DN 70 mm
Annual Flash Energy Value  : $15,804.47 /year
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📘 Calculation Methodology & Engineering Theory

Thermodynamics of Flash Steam

When high-pressure condensate discharges to a lower pressure region, the excess sensible heat causes spontaneous boiling into flash steam:

xflash = (hf1 − hf2) / hfg2 · 100%

Steam Trap Safety Factor Selection

Safety factors ensure rapid removal of initial cold startup condensate loads without waterlogging the heat exchanger matrix.

Key Engineering Assumptions

  • Saturated condensate at trap inlet pressure $P_1$.
  • Equilibrium flash vessel vapor separation without carryover.
  • Two-phase velocity restricted below 15 m/s to prevent water hammer and line erosion.