Lesson 2.2.2
Where to take readings
Take readings at each of these locations, recording temperature, %RH, humidity ratio (gpk) and dew point for every one. Compare dew point with the wet surface.
Outside
- Temperature
- %RH
- Humidity ratio (gpk)
- Dew point
Affected area
- Temperature
- %RH
- Humidity ratio (gpk)
- Dew point
Dehumidifier output
- Temperature
- %RH
- Humidity ratio (gpk)
- Dew point
HVAC output, if used
- Temperature
- %RH
- Humidity ratio (gpk)
- Dew point
Unaffected area
- Temperature
- %RH
- Humidity ratio (gpk)
- Dew point
Comparison and analysis
- Compare dew point against surface temperature to determine evaporation potential.
- Evaluate vapour pressure differentials between the wet material surface and the ambient air, and between affected and unaffected zones.
- Track changes over time to ensure drying targets are met.