♨️ 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

Thermodynamics

📊 Solver Telemetry ● ACTIVE

👁️ Views 31

⚡ Solves 27

💾 Downloads 502 📦 Fortran Code 4.4 KB

📅 Released Jun 2026

⏱️ Latency < 1 ms

♨️ 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

Steam Supply Pressure P₁ [bar gauge]:

Condensate Return Pressure P₂ [bar gauge]: 0.0 = atmospheric vented return

Running Condensate Load [kg/h]:

Trap Sizing Safety Factor (SF): Drip legs: 2.0x, Modulating exchangers: 1.5–2.0x

🛠️ Steam Trap Mechanism & Economics

Steam Trap Technology Type:

Steam Cost Value [$/ton]:

Key Thermodynamic Formulations:
• Flash Steam %: x_flash = (h_f1 − h_f2) / h_fg2 · 100%
• Flash Flow: ṁ_flash = ṁ_c · x_flash
• Design Trap Capacity: Q_rated = ṁ_c · SF
• Return Line ID: D = √[4 Q_flash / (π · V_allow)]

📊 Trap & Flash Recovery Results

📊 Output Summary
💾 Fortran Source

Recommended Trap Discharge Sizing

Minimum Trap Capacity = 1,700 kg/h

Ball Float & Thermostatic (Continuous Modulating Discharge)

Flash Steam Generation (%) 5.4 % Mass = 46.3 kg/h

Annual Energy Value Recoverable $6,938 /yr Based on 6000 operating hours

Flash Vapor Volumetric Flow 76.4 m³/h ΔP Across Trap = 2.0 bar

Condensate Line Nominal ID DN 50 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
=================================================================
Case Title                 : Building HVAC Steam Heating Coil Drainage
Steam Supply Pressure (P1) : 2.00 bar(g) (3.01 bar a)
Condensate Return (P2)     : 0.00 bar(g) (1.01 bar a)
Running Condensate Flow    : 850.0 kg/h
Trap Safety Factor (SF)    : 2.00 x
-----------------------------------------------------------------
Required Trap Sizing Cap.  : 1,700.0 kg/h
Flash Steam Percentage     : 5.44 %
Flash Steam Mass Produced  : 46.25 kg/h
Flash Vapor Volumetric Flow: 76.41 m3/h
Condensate Return Line ID  : DN 50 mm
Annual Flash Energy Value  : $6,937.50 /year
=================================================================

📘 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.

ThermoFluidCalc Engineering Report