FieldengThermal & HVAC
Refrigeration Subcooling
Saturation temperature minus liquid-line temperature. No refrigerant table.
Thermal & HVAC
Saturation temperature minus liquid-line temperature. No refrigerant table.
App id: THERM-18. Reference version 1.0.
How to fill it
Fill the inputs. The tool shows the outputs.
On the tool screen, Calc is the working sheet. Presets stores values you reuse. Reference is the formula, assumptions, and provenance below.
Formula
SC = T_sat − T_liquidInputs
| Name | Unit |
|---|---|
| Saturation temperature | F |
| Liquid-line temperature (camera) | F |
Outputs
| Name | Unit |
|---|---|
| Subcooling (hero result) | deltaF |
Diagnose
Observations are context. They do not pass or fail a structure. See Diagnose.
| When | Observation | Severity |
|---|---|---|
delta k < 0 | Negative superheat | warning |
delta k < 0 | Negative subcooling | warning |
delta k < 3 | Low superheat/subcooling | caution |
Assumptions
- Not a charge verdict by itself.
Provenance
- Enter Tsat from the liquid-line pressure and the refrigerant chart.