工程编程筆記
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.
1 Response
  1. Tiago Says:

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


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