FieldengThermal & HVAC
Condensation Risk
Whether a surface is at or below the air dew point. A surface-condition check, not a prediction of standing water.
Thermal & HVAC
Whether a surface is at or below the air dew point. A surface-condition check, not a prediction of standing water.
App id: THERM-16. 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
margin = T_surface − TdpInputs
| Name | Unit |
|---|---|
| Air temperature (camera) | F |
| Relative humidity | % |
| Surface temperature (camera) | F |
Outputs
| Name | Unit |
|---|---|
| Surface above dew point (hero result) | deltaF |
| Dew point | F |
| Surface | F |
| Condensation possible (1=yes) | 1 |
Diagnose
Observations are context. They do not pass or fail a structure. See Diagnose.
| When | Observation | Severity |
|---|---|---|
margin k ≤ 0 | Condensation possible | warning |
margin k < 2 | Thin dew-point margin | caution |
Assumptions
- Local air at the surface is the entered air state.
Provenance
- Uses THERM-11 Magnus dew point. Does not model glass U-value or rain.