FieldengThermal & HVAC
Refrigeration Superheat
Suction-line temperature minus saturation temperature. No refrigerant table — enter Tsat yourself.
Thermal & HVAC
Suction-line temperature minus saturation temperature. No refrigerant table — enter Tsat yourself.
App id: THERM-17. 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
SH = T_line − T_satInputs
| Name | Unit |
|---|---|
| Saturation temperature | F |
| Suction-line temperature (camera) | F |
Outputs
| Name | Unit |
|---|---|
| Superheat (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
- Same refrigerant, same pressure as the saturation value you entered.
Provenance
- Pressure-to-Tsat lookup is not included. Use the chart for the refrigerant in the machine.