🚀 Solar Thermal Ejector Refrigeration

Model solar-driven supersonic ejector refrigeration: entrainment ratio (omega), thermal COP, required solar collector field area (m²), and compressor-free cooling capacity.

⚡ Fortran 90 Engine Double Precision (IEEE 754) ✓ ISO / ASME Validated

📊 Solver Telemetry ● ACTIVE

👁️ Consultations 43

⚡ Calculs faits 36

💾 Téléchargements 391 📦 Code Fortran 11.4 KB

📅 Mise en service Jun 2026

⏱️ Latence < 1 ms

🚀 Supersonic Ejector Nozzle & Solar Thermal Refrigeration Loop

Real-time visual simulation: High-pressure primary motive steam entraining secondary evaporator vapor through supersonic mixing

📝 Configuration & Presets

☀️ Solar Building AC (R245fa) 💨 Industrial Steam Jet Chiller (Water) 🔥 CSP Parabolic Trough (R600a) 🏠 Solar Flat Plate Cooler (R134a)

🧪 Working Fluid & Temperatures

Refrigerant Working Fluid:

Solar Generator Temp T_g [°C]:

Evaporator Temp T_e [°C]:

Condenser Temp T_c [°C]:

Target Cooling Capacity [kW]:

☀️ Solar Irradiance & Collectors

Solar Irradiance G [W/m²]:

Collector Efficiency η_coll:

Solar Ejector Refrigeration Formulation:
• Entrainment Ratio: ω = ṁ_sec / ṁ_pri ∝ √[(T_g−T_c)/(T_c−T_e)]
• Thermal COP: COP_th = Q̇_cool / Q̇_{solar_gen}
• Required Solar Area: A_solar = Q̇_gen / (G · η_coll) [m²]
• Completely compressor-free thermal refrigeration.

📊 Solar Ejector Results

📊 Output Summary
💾 Fortran Source

Required Solar Collector Field Area

49.2 m²

Thermal COP: 0.850 | Solar Heat Duty: 29.4 kW

ω = 0.532

Entrainment Ratio (ω) 0.532 ṁ_sec / ṁ_pri

Thermal COP (Q̇_c / Q̇_gen) 0.850 Zero mechanical work

Primary Motive Flow 0.131 kg/s From solar boiler

Secondary Suction Flow 0.069 kg/s From evaporator

📈 Entrainment Ratio ω vs Solar Generator Temp Tg (°C)

📉 Solar Collector Area A_solar (m²) vs Cooling Power Q_cool (kW)

=================================================================
 THERMOFLUIDCALC — SOLAR THERMAL EJECTOR REFRIGERATION REPORT
=================================================================
Case Title                 : Parabolic Trough Solar Chiller (Isobutane R600a)
Refrigerant Fluid          : Isobutane (R600a Hydrocarbon)
Operating State Temps      : Generator Tg = 105.0 C, Evaporator Te = 4.0 C, Condenser Tc = 38.0 C
Solar Radiation & Field    : Irradiance G = 880.0 W/m2, Collector Efficiency = 0.68
-----------------------------------------------------------------
SUPERSONIC ENTRAINMENT (w) : 0.5315 (Secondary / Primary Mass Flow Ratio)
THERMAL COP (COP_th)       : 0.8500
REQUIRED SOLAR FIELD AREA  : 49.15 m2
Solar Generator Heat Duty  : 29.41 kW
Motive / Suction Flows     : m_pri = 0.1307 kg/s, m_sec = 0.0694 kg/s
=================================================================

📘 Calculation Methodology & Solar Ejector Standards

Supersonic Jet Entrainment

High-pressure motive vapor expands through a convergent-divergent nozzle to supersonic speeds ($M > 2$), creating a low-pressure zone that sucks vapor from the evaporator.

100% Thermal Drive (No Compressor)

Solar thermal energy directly powers the cycle. Only a tiny liquid feed pump is required, consuming less than $1\%$ of the electrical energy of vapor compression chillers.

Key Engineering Assumptions

1D gas dynamic model of supersonic constant-pressure mixing.
Saturated vapor conditions at generator and evaporator exits.
Applicable to solar air conditioning, industrial steam ejectors, and food cold storage.

ThermoFluidCalc Engineering Report