Refrigerant Charge (Tube Volume Method)
Estimate refrigerant charge from system pipe + component internal volume and refrigerant density at operating states.
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Formula, assumptions, and limits
| Symbol | Meaning | Unit |
|---|---|---|
| Pipe internal volume (πD²L/4) | m³ | |
| Liquid refrigerant density | kg/m³ | |
| Suction vapour density | kg/m³ |
Source: ASHRAE Handbook - Refrigeration Ch.4
In short
Estimate refrigerant charge from system pipe + component internal volume and refrigerant density at operating states.