Refrigerant Capillary Tube Calculator
Free estimate flow rate and pressure drop through capillary tubes in refrigeration systems. Get instant, accurate results with our easy-to-use calculator.
Input Parameters
Typical: 0.5-2.28 mm
Typical: 1.5-4.9 m (5-16 ft)
kg/m³
R-410A: ~1200 kg/m³, R-134a: ~1200 kg/m³
Results
Enter parameters to calculate flow rate
Capillary Tube Flow
Flow Rate Estimation
Based on Hagen-Poiseuille equation
Flow depends on:
- • Tube diameter (d⁴ relationship)
- • Pressure drop
- • Tube length
- • Refrigerant properties
Design Guidelines
- • Diameter: 0.5-2.28 mm
- • Length: 1.5-4.9 m (5-16 ft)
- • Proper subcooling required
- • System-specific sizing