Thermodynamics & Meteorology
Dew Point Simulator
Analyze saturation conditions, dew points, and condensation thresholds. Modify ambient air temperature and relative humidity to witness condensation physics.
Dew State
Damp
Spread: 8.3°C
Sat Pressure
3.16 kPa
e_s saturated limit
Output
CSV
Export ready
Parameters
Environment Preset
Temperature & RH Swing
Governing Equations
Magnus-Tetens Dew Point (Tdp)
Tdp = (c * α) / (b - α)
α parameter
α = ln(RH/100) + (b * T)/(c + T)
Saturated Vapor Pressure (es)
es = 0.61094 * exp( (b*T)/(c+T) )
Actual Vapor Pressure (e)
e = es * (RH / 100)
Constants: b = 17.625, c = 243.04 (standard values for range -45°C to 60°C).
Condensation starts to form on surfaces when surface temperature matches the Dew Point.
Saturation Chamber Diagram
Dew Point (Tdp)
16.70°C
Temp-Dew Point Spread
8.3°C
Condensation Risk
71%
Vapor Pressure (e)
1.897kPa
Dew Point & Vapor Pressure vs Relative Humidity
Humidity Saturation Data
| Rel. Humidity (%) | Dew Point (°C) | Vapor Pressure (kPa) | Risk (%) |
|---|---|---|---|
| 10% | -8.8 | 0.316 | 0% |
| 16% | -2.6 | 0.506 | 4% |
| 22% | 1.8 | 0.696 | 19% |
| 28% | 5.2 | 0.885 | 31% |
| 34% | 8.1 | 1.075 | 41% |
| 40% | 10.5 | 1.265 | 49% |
| 46% | 12.6 | 1.454 | 57% |
| 52% | 14.5 | 1.644 | 63% |
| 58% | 16.2 | 1.834 | 69% |
| 64% | 17.7 | 2.024 | 75% |
| 70% | 19.1 | 2.213 | 80% |
| 76% | 20.5 | 2.403 | 84% |
| 82% | 21.7 | 2.593 | 89% |
| 88% | 22.9 | 2.782 | 93% |
| 94% | 24.0 | 2.972 | 96% |
| 100% | 25.0 | 3.162 | 100% |