Psychrometric Chart Quick Guide
7 properties can be obtained at any point in psychrometric chart. You can locate the point by any 2 properties. The properties as listed below.
- Dry bulb temperature (℃)
- Wet bulb temperature (℃)
- Dew point temperature (℃)
- Relative humidity (%)
- Humidity ratio (kg / kg dry air)
- Enthalpy (kJ / kg)
- Specific volume (m³ / kg)
If you know the flow rate of the ACMV system, you can calculate the kw at any point.
| = | flow rate * enthalpy / specific volume | |
| = | (m³/s) * (kJ/ kg) / (m³/kg) | |
| = | kJ/s | |
| = | kW |
Generally the power between 2 points is useful. It is the cooling load.
Enthalpy at any point can be calcuated with formula as below.
Where T is the dry bulb temperature and the H is the humidity ratio.


Olá, existe uma forma de apagar um ponto que foi inserido errado?